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Posts Tagged ‘KILAUEA VOLCANO’

KILAUEA VOLCANO: 850+ Quakes Rattle Big Island

Posted by feww on May 18, 2018

Hawaii Island seismicity increasing, hit by hundreds of earthquakes

Over 850 earthquakes measuring magnitude 2.5+ have struck in and around Hawai’i Island since April 20, according to USGS records.

HAWAIIAN VOLCANO OBSERVATORY STATUS REPORT – USGS
Thursday, May 17, 2018, 4:54 PM HST (Friday, May 18, 2018, 02:54 UTC)

Kīlauea Volcano Summit

  • After the explosive eruption early this morning seismic levels have been gradually increasing, but as of this report no additional explosions have occurred.
  • No earthquakes greater than magnitude 3.5 have occurred in the past day.
  • Volcanic gas emissions at the summit remain high.

Kīlauea Lower East Rift Zone

  • This afternoon, fissure 17 is still actively spattering but the flow is nearly stalled. In addition, fissures 18, 19, and 20 have reactivated and a new fissure (21) has opened between fissures 7 and 3. An area 50-100 yards wide, parallel to and north of the line of fissures between Highway 130 and Lanipuna Gardens, has dropped slightly. This long depression is currently being filled by pahoehoe lava flows from fissures 20 and 21.
  • Volcanic gas emissions remain elevated throughout the area downwind of the fissures.
  • Magma continues to be supplied to the lower East Rift Zone as indicated by the continued northwest displacement of a GPS monitoring station. Elevated earthquake activity continues, but earthquake locations have not moved farther downrift in the past couple of days. [USGS-HVO]


View of this morning’s eruption plume from the Overlook crater nearly an hour after the event started. This image is from the webcam located on the north rim of Moku‘āweoweo Caldera near the summit of Mauna Loa Volcano. This image was recorded at 5:10 a.m. HST. At about 04:15 a.m. HST, an explosion from the Overlook crater at Kīlauea Volcano’s summit produced an eruption column that reached at least 30,000 ft. above sea level. The plume was blown by wind toward the northeast. This resulted in ash fall at the Hawaiian Volcano Observatory, and nearby Volcano Village and the Volcano Golf and Country Club Subdivsion. [USGS-HVO]

Highway to Hell: Cracks widen in lower East Rift Zone, Kīlauea Volcano


Aerial view of ground cracks on Pohoiki Road during an overflight of the eruptive fissure area at about 7 a.m. HST. Cracks continued to open and widen, some with horizontal and vertical offsets, in the area during the past 24 hours. These cracks are caused by the underlying intrusion of magma into the lower East Rift Zone. [USGS-HVO]


HVO geologist next to cracks on Nohea Street in Leilani Estates this morning. These cracks expanded significantly in the past day. Note the vertical offset across the cracks. [USGS-HVO]

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Kīlauea Volcano: Explosion in Overlook Vent Produces Large Volcanic Cloud

Posted by feww on May 17, 2018

Volcanic Activity Summary:

At about 0415 [HST?] this morning, an explosion from the Overlook vent within Halemaumau crater at Kilauea Volcano’s summit produced a volcanic cloud that reaches as high as 30,000 ft asl and drifted northeast. Continued emissions from the crater are reaching as high as 12,000 ft asl.

At any time, activity may again become more explosive, increasing the intensity of ash production and producing ballistic projectiles near the vent. [USGS-HVO]

This video shows spattering at fissure 18, Kīlauea Volcano’s Lower East Rift Zone, at approximately 2:00 AM HST on May 16, 2018. The audio captures the sounds of explosions and burning vegetation.


Lava spattering area from an area between fissures 16 and 20 photographed at 8:20 a.m. today [Time Zone Not Specified.]


Close view of rock hurled from the Overlook crater during an explosive event last evening. The rock broke apart on impact, and was about 60 cm (24 in) before it hit the ground. The location is a few hundred meters (yards) south of the Overlook crater at the Halema‘uma‘u parking lot. Note the ash covering the parking lot, less than about 1 cm (0.4 in) in thickness. 


View uprift from the Hawaiian Volcano Observatory overflight this morning at 8:25 a.m. Note sulfur dioxide plumes rising from the fissures along the rift and accumulating in the cloud deck. Winds are calm today. [Time Zone Not Specified.]


Aerial view (from a helicopter) of spattering between fissures 16 and 20, Kīlauea Volcano Lower East Rift Zone, at approximately 7:30 AM HST on May 16, 2018. The audio is the sound of the helicopter. [All images and videos mirrored from USGS-HVO]

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RED Alert Kilauea Volcano

Posted by feww on May 16, 2018

Ash eruption from Overlook vent intensifies

Volcanic Activity Summary:

As of early this morning, eruption of ash from the Overlook vent within Halemaumau crater at Kilauea Volcano’s summit has generally increased in intensity. Ash has been rising nearly continuously from the vent and drifting downwind to the southwest. Ashfall and vog (volcanic air pollution) has been reported in Pahala, about 18 miles downwind. NWS radar and pilot reports indicate the top of the ash cloud is as high as 10,000 to 12,000 feet above sea level, but this may be expected to vary depending on the vigor of activity and wind conditions.

Ash emission from the Kilauea summit vent will likely be variable with periods of increased and decreased intensity depending on the occurrence of rockfalls into the vent and other changes within the vent.

At any time, activity may become more explosive, increasing the intensity of ash production and producing ballistic projectiles near the vent. [USGS/HVO @ 23:23:27 UTC 2018-05-15]

Volcanic cloud height: 10,000 – 12,000 feet (3,000 – 4,000 m)


At 11:05 a.m. HST [May 15.] Photograph from the Jaggar Museum, Hawai`i Volcanoes National Park, captures an ash plume rising from the Overlook crater. Ash falling from the plume can be seen just to the right side (and below) the plume. [USGS/HVO]


At 1:38 p.m. HST [May 15,] another dark ash plume rose from the Overlook crater. During a flight earlier today by the Civil Air Patrol, the height of the ash plumes near the crater rose to more than 3 km (9,800 ft) above sea level, and downwind the plumes continued to rise to about 3.5 km (11,500 ft) above sea level. [USGS/HVO]


TOP: Activity at Halema‘uma‘u crater increased this morning to include the nearly continuous emission of ash with intermittent stronger pulses that form occasional higher plumes 1-2 kilometers (3,000 to 6,000 feet) above the ground. This photo shows the ash plume at about 9 a.m. HST. Tradewinds this morning are blowing the ash generally to the southwest toward the Ka`u Desert. The dark area to the right of the ash column rising from the Overlook crater is ash falling from the ash cloud to the ground. [USGS/HVO]


Ash plume viewed from the Volcano Golf Course near Volcano, Hawai‘i. This view is nearly due north of the Halema‘uma‘u crater. [USGS/HVO]


At 11:43 [May 15] HST, Civil Air Patrol flight CAP20 reported plume tops at about 9,500 ft [~ 3,000m] with the dispersed plume rising as high as 11,000 ft. The CAP mission was launched from Hilo in support of Hawai‘i County Civil Defense and USGS Hawaiian Volcano Observatory response to the ongoing eruption. Ash from this plume was reported falling on communities downwind. [USGS/HVO]

Hazard Analysis:

  • Ash cloud: The ashcloud is drifting downwind primarily to the southwest with the Trade Winds. Wind conditions are expected to change in the next 24 hours and other areas around Kilauea’s summit are likely to receive ashfall.
  • Ashfall: Ashfall has been reported in the community of Pahala, at locations along Highway 11 from Pahala to Volcano, and in the Ka’u Desert section of Hawaii Volcanoes National Park.
  • Other hazards: Ballistic projectiles may be produced should steam-driven explosions occur. Impacts will be limited to an area around Halemaumau.
  • Volcanic gas: Vog or volcanic air pollution produced by volcanic gas has been reported in Pahala.

 

 

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KILAUEA VOLCANO: Big Island ‘Shrinking’

Posted by feww on May 15, 2018

Fissure 20 Cracks Open

Fissure 20 emitting lava spatter and super-heated steam has forced Hawaii authorities to call for more evacuations on the Big Island, while explosive eruptions from the Kilauea volcano loom.

Hawaiʻi County, encompassed by the Big Island, is home to about 190,000 people and an inordinate no. of tourists.

LOWER EAST RIFT ZONE: Eruption of lava continues from multiple points along the northeast end of the active fissure system, HVO said.

Volcanic gas emissions remain elevated throughout the area downwind of the vents. Yesterday [May 14 AM UTC] with the onset of activity at fissure 17, powerful steam jets have occurred intermittently near the west end of the fissure. These jets may be responsible for some of the loud sounds reported by residents and emergency workers.

KILAUEA SUMMIT: “Deflationary tilt at the summit of the volcano continues and seismicity remains elevated. Last night several strong earthquakes shook HVO and the surrounding area.”

Several hours ago, “a steady, vigorous plume of steam and occasionally minor amounts of ash is rising from the Overlook vent and drifting downwind to the southwest. As has been observed over the past several days, occasional rockfalls into the deep vent are expected produce intermittent pulses of slightly more vigorous ash emissions. Depending on wind conditions, dustings of ash may occur in the Kilauea summit area and downwind. More energetic ash emissions are possible if explosive activity commences,” HVO said.


Map as of 2:30 p.m. HST, May 14, shows the location of fissure 17, which opened on May 13 at about 4:30 a.m. HST., and the area covered by an ‘a‘ā flow since then. The flow front as of 2:30 p.m. is shown by the small red circle with label. The flow is following well a path of steepest descent (blue line), immediately south of the 1955 ‘a‘ā flow boundary. Shaded purple areas indicate lava flows erupted in 1840, 1955, 1960, and 2014-2015. [USGS/HVO]

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KILAUEA VOLCANO: Aerial View of Fissure 17

Posted by feww on May 14, 2018

Eruption of lava continues from the fissure system; more than 700 quakes (M≥2.5) recorded

[volcanic] activity was dominated by lava fountaining, explosion of spatter bombs hundreds of feet into the air, and several advancing lava flow lobes moving generally northeast from fissure 17 at the downrift (northeast) end of the new fissure system. As of about 7 pm, one lobe was 2 yards thick and advancing roughly parallel to Highway 132. The flow front was just over a half mile southeast of the intersection of Highway 132 and Noni Farms Road.

This eruption is still evolving and additional outbreaks of lava are possible. The location of future outbreaks could include areas both uprift (southwest) and downrift (northeast) of the existing fissures, or, existing fissures can be reactivated. Communities downslope of these fissures could be at risk from lava inundation. Activity can change rapidly.

https://volcanoes.usgs.gov/vsc/movies/movie_173947.html

Aerial view of fissure 17 around 4:30 p.m. HST. On the west end of the flow, intermittent percussive jetting threw spatter and lava bombs up to 500 feet above the ground. East margin of the ‘a‘ā flow was cascading into a pit or graben. [USGS-HVO]

Earthquakes at Kīlauea Volcano

Earthquake activity in the summit remains elevated with several strongly felt events at HVO today. Most of these earthquakes are related to the ongoing subsidence of the summit area and earthquakes beneath the south flank of the volcano. [More than 700 earthquakes measuring ≥2.5mw have been recorded since May 3.]

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KILAUEA VOLCANO: Phreatic Eruptions Highly Probable

Posted by feww on May 13, 2018

Fissure No. 17 Cracks Open

HAWAIIAN VOLCANO OBSERVATORY STATUS REPORT – USGS/HVO

Saturday, May 12, 2018, 7:07 PM HST (Sunday, May 13, 2018, 05:07 UTC)

KILAUEA VOLCANO (VNUM #332010)
19°25’16” N 155°17’13” W, Summit Elevation 4091 ft (1247 m)
Current Volcano Alert Level: WARNING
Current Aviation Color Code: ORANGE

Lower East Rift Zone Eruption

A new outbreak has been reported at 6:00 pm just east of fissure 16. Lava from this latest outbreak is actively spattering and degassing but no flow has yet formed. This area was actively steaming earlier in the day. The new fissure (17) is about a half mile northeast from the end of Hinalo Road, very close to fissure 16 that opened about 6:45 am. Activity at fissure 16 produced a lava flow that traveled about 250 yards before stalling about 2:30 pm.

Earthquake activity, ground deformation, and continuing high emission rates of sulphur dioxide in the area indicate additional outbreaks of lava are likely as this eruption continues. The location of future outbreaks could include areas both uprift (southwest) and downrift (northeast) of the existing fissures, or, existing fissures can be reactivated. Communities downslope of these fissures could be at risk from lava inundation.

https://volcanoes.usgs.gov/vsc/movies/movie_173946.html
VIDEO: Fissure 16 eruption at 12:57 p.m. HST on May 12, 2018. Video by Cheryl Gansecki, University of Hawaii.

Kīlauea Volcano Summit

Deflationary tilt continues. Based on this and field observations of the past two days, the lava lake level continues to drop. Over the course of the day, rockfalls from the steep enclosing crater walls have generated small ash clouds mixed with white condensed water vapor intermittently throughout the day. These ash clouds have been relatively low concentration and have risen only a few thousand feet above the ground, a few generating very localized ashfall downwind. More explosive activity generating larger ash clouds remains possible and can occur with no warning.

Earthquake activity in the summit remains elevated with several felt events at HVO today. Many of these earthquakes are related to the ongoing subsidence of the summit area and earthquakes beneath the south flank of the volcano.

Kīlauea is the youngest and southeastern most volcano on the Island of Hawai‘i. Topographically Kīlauea appears as only a bulge on the southeastern flank of Mauna Loa, and so for many years Kīlauea was thought to be a mere satellite of its giant neighbor, not a separate volcano. However, research over the past few decades shows clearly that Kīlauea has its own magma-plumbing system, extending to the surface from more than 60 km deep in the earth. Kīlauea ranks among the world’s most active volcanoes and may even top the list. [USGS/HVO]

https://volcanoes.usgs.gov/vsc/movies/movie_173945.html

Video: Good weather provided clear views into Pu‘u ‘Ō‘ō crater. The crater floor collapsed on April 30 as magma drained to the east along the East Rift Zone. Based on a 3D model constructed from thermal images, the deepest part of the crater was 350 m (1150 ft) below the crater rim. [USGS/HVO]

Volcano Threat Levels

Very High Threat Potential
Kīlauea
Mauna Loa
High Threat Potential
Hualālai
Moderate Threat Potential
Haleakalā
Mauna Kea
Not Ranked
Lō‘ihi

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Kilauea Volcano: Sporadic Explosions in Halema‘uma‘u Crater

Posted by feww on May 12, 2018

Rockfalls into the deepening vent causing explosions –HVO


TOP: At 9:06 a.m. HST (May 11, 2018), an ash plume rose from the Overlook crater at Kīlauea’s summit. Similar to recent plumes, this event was likely caused by a rockfall from the crater’s steep walls. The plume’s reddish color is most likely from altered rock and ash fragments that fell into the deepening conduit. [USGS/HVO]


TOP: At 9:17 a.m. HST, another weak ash plume rose from the Overlook Vent in Halema‘uma‘u crater, producing a slightly more energetic and darker plume. This second plume lacked the pink altered ash that was in the earlier plume, apparently consisting of more unaltered (therefore darker) rock fragments. This plume also was probably caused by rockfall into the deepening vent, not related to groundwater and steam-driven explosions. [USGS/HVO]

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Kilauea: Short-lived explosion at Halema‘uma‘u crater

Posted by feww on May 10, 2018

Ash plume rises from the Overlook crater at Kīlauea Volcano summit


Ash column rises from the Overlook crater at the summit of Kīlauea Volcano. HVO’s interpretation is that the explosion was triggered by a rockfall from the steep walls of Overlook crater. The photograph was taken at 8:29 a.m. HST from the Jaggar Museum overlook. The explosion was short-lived. Geologists examining the ash deposits on the rim of Halema‘uma‘u crater found fresh lava fragments hurled from the lava lake. This explosion was not caused by the interaction of the lava lake with the water table. When the ash cleared from the crater about an hour after the explosion, geologists were able to observe the lava lake surface, which is still above the water table. [USGS/HVO]

 

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KILAUEA: Sitting Atop an Active Volcano

Posted by feww on May 8, 2018

HAWAIIAN VOLCANO OBSERVATORY STATUS REPORT – USGS

Monday, May 7, 2018, 5:59 PM HST (Tuesday, May 8, 2018, 03:59 UTC)

KILAUEA VOLCANO (VNUM #332010)
19°25’16” N 155°17’13” W, Summit Elevation 4091 ft (1247 m)
Current Volcano Alert Level: WARNING
Current Aviation Color Code: ORANGE

Lower East Rift Zone Eruption

The intermittent eruption of lava in the Leilani Estates subdivision in the lower East Rift Zone of Kīlauea Volcano continues. The location of activity today was focused on the southwest portion of the area.

This morning, two new fissure segments broke ground. The first (fissure 11) opened in a forested southwest of Leilani Estates about 9:30 am and was active for only 3 hours. The second (fissure 12) opened about 12:20 between older fissures 10 and 11. By 3:15 pm, both new fissures were [inactive] but the west end of fissure 10 was steaming heavily.

Cracks on Highway 130 widened from 7 cm to 8 cm over the course of the day and additional cracks were found just west of the highway on trend with the eruptive fissures.

–  Rates of seismicity and deformation changed little throughout the day.
–   Gas emissions likely remain elevated in the vicinity of fissures.

Kīlauea Volcano Summit

Tiltmeters at the summit of Kīlauea Volcano continue to record the deflationary trend of the past several days and the lava lake level continues to drop. Rockfalls from the steep crater walls into the retreating lake continue to produce occasional ashy plumes above Halema’uma’u crater. These plumes are expected to continue.

Earthquake activity in the summit remains elevated but has decreased over the past few days. Many of these earthquakes are related to the ongoing subsidence of the summit area and earthquakes beneath the south flank of the volcano.

Aerial view of fissure 12 at 1:15 p.m. HST. [USGS/HVO]

 

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Kilauea: High levels of volcanic gases including SO2 being emitted from fissures

Posted by feww on May 7, 2018

HAWAIIAN VOLCANO OBSERVATORY DAILY UPDATE – USGS

Monday, May 7, 2018, 7:45 AM HST (Monday, May 7, 2018, 17:45 UTC)

KILAUEA VOLCANO (VNUM #332010)
19°25’16” N 155°17’13” W, Summit Elevation 4091 ft (1247 m)
Current Volcano Alert Level: WARNING
Current Aviation Color Code: ORANGE

Summary: Eruption of lava and gas continues at a low level along Kīlauea Volcano’s lower East Rift Zone within the Leilani Estates subdivision. Overnight, active emission of lava and spatter at multiple fissures was minimal. This is likely only a pause in activity; additional outbreaks or a resumption of activity are anticipated as seismicity continues in the area. Deflationary tilt at the summit of the volcano continues and the lava lake level continues to drop. There is no active lava in the Puʻu ʻŌʻō area. Aftershocks from Friday’s magnitude-6.9 earthquake continue and more should be expected, with larger aftershocks potentially producing rockfalls and associated ash clouds above Puʻu ʻŌʻō and Halemaʻumaʻu crater. Seismicity at Kīlauea’s summit remains elevated.

An overflight video from Leilani Estates this afternoon (May 6). Lava erupting from fissure 8 formed an ‘a‘ā flow, which advanced northward about 0.9 km (0.6 miles) by 10:30 a.m HST. This fissure eruption diminished around 4:00 p.m., but the lava flow continued to advance slowly for several hours (last report at about 7 p.m. HST). [USGS/HVO]

Lower East Rift Zone Observations

Lava emission from fissures was minimal overnight. Strong degassing continues from several fissures. Yesterday, a lava flow advanced northward from fissure 8 about 0.9 km (0.6 miles) by 10 a.m., HST before stopping.

In the past 12 hours, deformation of the ground in the area has slowed. Ground cracks are reported crossing Highway 130 west of the eruption site.

Overall seismicity in the area has not changed significantly overnight. Earthquakes continue and seismic stations nearest the fissures record seismicity likely related to ongoing vigorous degassing.

Hazard Analysis:

Continued eruptive activity (fluctuating and intermittent) in the lower East Rift Zone is likely. New outbreaks or resumption of lava production at existing vents can occur at any time.

Areas downslope of erupting fissures are at risk of lava inundation. The general area of Leilani Estates remains at the greatest risk. However, as the eruption progresses, other areas of the lower East Rift Zone may also be at risk.

High levels of volcanic gas including sulphur dioxide are being emitted from the fissure vents. In addition, smoke from burning houses and burning asphalt is a health concern and should be avoided.

As the lava lake level inside Halemaʻumaʻu drops, rockfalls from the enclosing walls may increase in frequency prompting explosions of spatter from the lake onto the nearby crater rim and lofting plumes of ash. Dustings of ash from these events can occur downwind.

Additional aftershocks from the magnitude-6.9 earthquake are expected and some may be strong. Residents are advised to review earthquake preparedness by consulting available resources such as: https://www.shakeout.org/hawaii/dropcoverholdon/

Residents of the Puna District should remain alert, review individual, family, and business emergency plans, and watch for further information about the status of the volcano. [USGS]


Lava moving down Makamae Street in Leilani Estates at 9:32 a.m. on May 6, 2018. [USGS/HVO]

 

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KILAUEA VOLCANO: Lava Erupting Intermittently from 8 Fissures

Posted by feww on May 6, 2018

HAWAIIAN VOLCANO OBSERVATORY STATUS REPORT

USGS –  Saturday, May 5, 2018, 11:42 PM HST (Sunday, May 6, 2018, 09:42 UTC)

KILAUEA VOLCANO (VNUM #332010)
19°25’16” N 155°17’13” W, Summit Elevation 4091 ft (1247 m)
Current Volcano Alert Level: WARNING
Current Aviation Color Code: ORANGE

Lower East Rift Zone Eruption

The intermittent eruption of lava in the Leilani Estates subdivision in the lower East Rift Zone of Kīlauea Volcano continues. Fissure 7 stopped erupting in mid-afternoon. A new fissure erupted this evening near fissures 2 and 7, and lava fountains reached as high as about 70 m (230 ft). Early this morning, new ground cracks were reported on Highway 130, but no heat or escaping steam was subsequently observed.

Seismicity and deformation are consistent with continued accumulation of magma within the rift zone.

Residents should remain informed and heed Hawaii County Civil Defense closures, warnings, and messages (http://www.hawaiicounty.gov/active-alerts).

For maps showing the locations of eruption features, please see https://volcanoes.usgs.gov/volcanoes/kilauea/multimedia_maps.html

For information on volcanic air pollution, please see: http://www.ivhhn.org/vog/

HVO geologists will be in the area overnight to track and report to Hawaii County Civil Defense on the activity, and other scientists are closely tracking the volcano’s overall activity using various monitoring data streams.

Kīlauea Volcano Summit

Tiltmeters at the summit of Kīlauea Volcano continue to record the deflationary trend of the past several days. Satellite InSAR data show that between April 23 and May 5, 2018, the summit caldera floor subsided about 10 cm (4 in). Corresponding to this deflationary trend, the summit lava lake level in Overlook crater has dropped about 128 m (518 ft) below the crater rim since April 30. Rockfalls from the crater walls into the retreating lake produced ashy plumes above Halemaumau crater today, resulting in light ashfall in the summit area. Rockfalls and ashy plumes are expected to continue as the lake level drops.

Earthquake activity in the summit increased in the past 2 days, coincident with the magnitude-6.9 earthquake on May 4 beneath the south flank of Kīlauea. In the past two days, about 152 magnitude-2 and magnitude-3 earthquakes occurred at depths less than 5 km (3 miles) beneath the summit area. Twenty two magnitude 3 earthquakes were recorded. These earthquakes are related to the ongoing subsidence of the summit area and beneath the south flank of the volcano.

View of new fissure from Luana Street near fissure 2 and 7, Leilani Estates


A new fissure erupted this evening near fissures 2 and 7, beginning with small lava spattering at about 8:44 p.m. HST. By 9:00 p.m., lava fountains as high as about 70 m (230 ft) were erupting from the fissure. [USGS/HVO]

Kīlauea Volcano lower East Rift Zone eruption


Left: At 07:45 a.m. HST, today, lava from fissure 7 slowly advanced to the northeast on Hookapu Street in Leilani Estates subdivision on Kīlauea Volcano’s lower East Rift Zone. A map showing the location of the fissures is posted on HVO’s website at https://volcanoes.usgs.gov/volcanoes/kilauea/multimedia_maps.html. Right: At 12:26 p.m. HST today, a crack opened on Pohoiki Road just east of Leilani Street in the Leilani Estates subdivsion.  [USGS/HVO]

Nightmare on Leilani and Makamae Streets 


A panoramic view of fissure 7 from the intersection of Leilani and Makamae Streets in the Leilani Estates subdivision. This photo was taken at 06:01 a.m. HST today.  [USGS/HVO]

FIRE-EARTH themes for the eruption photos are available via FIRE-EARTH PULSARS.

Ongoing Seismicity

M4.6 44km SSE of Volcano, Hawaii   –  8.7 km
2018-05-05 03:30:15 (UTC) 

M4.7 – 20km SE of Leilani Estates, Hawaii   –  10.1 km
2018-05-05 01:20:27 (UTC) 

M5.3 – 16km E of Pahala, Hawaii  –  8.9 km
2018-05-05 00:37:10 (UTC)

M4.8 – 8km WSW of Volcano, Hawaii   –  2.7 km
2018-05-04 22:48:19 (UTC)

M4.6 – 13km S of Volcano, Hawaii   –   7.7 km
2018-05-04 22:42:42 (UTC)

M4.6 – 17km S of Volcano, Hawaii  –  7.9 km
2018-05-04 22:37:18 (UTC)

M6.9 – 16km SW of Leilani Estates, Hawaii   –  5.0 km
2018-05-04 22:32:55 (UTC)

M5.4 – 18km SW of Leilani Estates, Hawaii    –   6.9 km
2018-05-04 21:32:44 (UTC)

M5.0 – 18km S of Fern Acres, Hawaii  –  6.9 km
2018-05-03 20:30:56 (UTC)

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KILAUEA: Eruption of lava in the Leilani Estates continues

Posted by feww on May 5, 2018

HAWAIIAN VOLCANO OBSERVATORY STATUS REPORT  – USGS

Friday, May 4, 2018, 4:04 PM HST (Saturday, May 5, 2018, 02:04 UTC)

KILAUEA VOLCANO (VNUM #332010)
19°25’16” N 155°17’13” W, Summit Elevation 4091 ft (1247 m)
Current Volcano Alert Level: WARNING
Current Aviation Color Code: ORANGE

Eruption of lava in the Leilani Estates subdivision in the lower East Rift Zone of Kīlauea Volcano continues. Several additional eruptive fissures or vents – each several hundred yards long – have opened over the past day. No significant lava flows have yet formed. Spatter and lava are accumulating primarily within a few tens of yards of the vent.

The sixth and most recent fissure is on the eastern edge of the subdivision. Not all fissure vents remain active and no far-traveled lava flows have formed.

For maps showing the locations of these features, please see https://volcanoes.usgs.gov/volcanoes/kilauea/multimedia_maps.html

HVO geologists will be in the area overnight to track additional activity that may occur, and other scientists are closely tracking the volcano’s overall activity using various monitoring data streams.

Seismicity and deformation are consistent with continued accumulation of magma within the rift zone. Additional outbreaks of lava are expected.

Residents should remain informed and heed Hawaii County Civil Defense messages (http://www.hawaiicounty.gov/active-alerts).


ABOVE: A new lava fissure (Fissure 2) commenced around 1:00 am HST on Kīlauea Volcano’s lower East Rift Zone on Makamae and Leilani Streets in the Leilani Estates subdivision. Spatter was being thrown roughly 30 m (about 100 ft) high at the time of this photo. Copious amounts of sulfur dioxide gas, which should be avoided, is emitted from active fissures. The eruption is dynamic and changes could occur with little warning. TOP: Steaming cracks at 5:57 a.m. HST in Leilani Estates subdivision, moments before Fissure 3 opened up on Kaupili Street. [USGS/HVO]


Fissure 3 at Leilani and Kaupili Streets in Leilani Estates subdivision at 8:07 a.m. HST today. Lava on the road was approximately 2 m (about 2 yd) thick. [USGS/HVO]

FIRE-EARTH theme for the eruption photos is available via FIRE-EARTH PULSARS.

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KILAUEA VOLCANO – HAWAIIAN VOLCANO OBSERVATORY STATUS REPORT

Posted by feww on May 4, 2018

HAWAIIAN VOLCANO OBSERVATORY STATUS REPORT
U.S. Geological Survey

Thursday, May 3, 2018, 10:13 PM HST (Friday, May 4, 2018, 08:13 UTC)

KILAUEA VOLCANO (VNUM #332010)
19°25’16” N 155°17’13” W, Summit Elevation 4091 ft (1247 m)
Current Volcano Alert Level: WARNING
Current Aviation Color Code: ORANGE

The eruption in the Leilani Estates subdivision in the lower East Rift Zone of Kīlauea Volcano that began in late afternoon ended by about 6:30 p.m. HST. Lava spatter and gas bursts erupted from the fissure for about two hours, and lava spread a short distance from the fissure, less than about 10 m (33 ft).

At this time, the fissure is not erupting lava and no other fissures have erupted.

HVO geologists are working near the fissure overnight to track additional activity that may occur, and other scientists are closely tracking the volcano’s overall activity.

Recent Observations

  • Sulfur gas is quite noticeable around the fissure…
  • Lava flows did not advance more than about 10 m (33 ft) from the fissure. The flows are no longer active.
  • No other fissures have erupted from along the rift zone currently.
  • Tiltmeters at Kīlauea’s summit continue to record deflationary tilt and the lava lake level has dropped about 37 m (121 ft) in the past 24 hours.
  • Seismic activity has not changed significantly during the day or since the brief fissure eruption.


TOP: A view of Pu‘u ‘Ō‘ō from the east, shortly after a small collapse. The coating of red ash on the south side of the cone (left side of photo) is evident. ABOVE: At 10:31 a.m. HST, while HVO geologists were working on Pu‘u ‘Ō‘ō, a magnitude-5.0 earthquake shook the ground around the cone. Moments later, a collapse occurred in the crater of Pu‘u ‘Ō‘ō, creating a robust, reddish-brown ash plume. [Source: volcanoes.usgs.gov]


At 10:30 HST (May 3), ground shaking from a preliminary magnitude-5.0 earthquake south of Pu‘u ‘Ō‘ō caused rockfalls and possibly additional collapse into the Pu‘u ‘Ō‘ō crater on Kīlauea Volcano’s East Rift Zone. A short-lived plume of ash produced by this event lofted skyward and dissipated as it drifted southwest from Pu‘u ‘Ō‘ō. Downwind areas may have experienced a dusting of ash from this plume. At this time, the 10:30 earthquake has caused no other changes at Kīlauea Volcano. HVO will continue to closely watch monitoring data for any changes. This image was captured from an HVO overflight carrying HVO scientists to the East Rift Zone for field work today. USGS photo by Kevan Kamibayashi.
 

SER – 050402

Hawaii M 5.0
19.344°N 155.070°W [18km S of Fern Acres, Hawaii]
6.9 km depth
2018-05-03 20:30:56 UTC

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Significant Quake Shakes Big Island, Hawaii

Posted by feww on June 9, 2017

G-1709E

M5.3 earthquake strikes  18km SE of Volcano, Hawaii  -USGS

The event occurred near Kilauea Volcano and was followed by at least 2 aftershocks, as of posting, USGS reported.

Magnitude: 5.3 ml
Location: 19.330°N, 155.121°W [18km SE of Volcano, Hawaii]
Depth: 7.1 km
Time: 2017-06-08 17:01:19 UTC
USGS Felt Reports: 979
FIRE-EARTH References: BLM1 [060601]

 

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Bogoslof Volcano Erupts

Posted by feww on March 9, 2017

Bogoslof : Large explosive eruption ejects ash 10.6 km (35,000 feet) asl

Bogoslof volcanic ash cloud at 3:15 AM Mar 8 AKST. Cloud at least 35,000 ft asl.
Img by Dave Schneider,  https://www.avo.alaska.edu/images/image.php?id=107841

HAWAIIAN VOLCANO OBSERVATORY DAILY UPDATE  [USGS]

Wednesday, March 8, 2017, 9:10 AM HST (Wednesday, March 8, 2017, 19:10 UTC)

KILAUEA VOLCANO (VNUM #332010)
19°25’16” N, 155°17’13” W, Summit Elevation 4,091 ft (1,247 m)
Current Volcano Alert Level: WATCH
Current Aviation Color Code: ORANGE

Activity Summary: Kīlauea Volcano continues to erupt at its summit and at the Puʻu ʻŌʻō vent on its East Rift Zone. The episode 61g lava flow from Puʻu ʻŌʻō is entering the ocean at Kamokuna and is feeding surface flows on and above the pali. These lava flows pose no threat to nearby communities at this time. The summit deflationary trend of the past 2 days reversed early this morning to an inflationary trend. The lava lake was about 34 m (~112 ft) below the Overlook crater rim this morning. Seismicity in the upper East Rift Zone did not change significantly in the past day.

Summit Observations: Tiltmeters at Kīlauea’s summit began recording an inflationary tilt early this morning, reversing the deflationary trend of the past 2 days. The lava lake was measured this morning at about 34 m (~112 ft) below the Overlook crater. Webcam views of the lava lake can be found at this webpage: http://hvo.wr.usgs.gov/cams/region_kism.php. Summit tremor continues to fluctuate in response to variations in lava lake spattering. Average daily summit sulfur dioxide emission rates were between about 6,600 and 1,900 metric tons/day during the last week in February, the most recent time when conditions permitted measurements. Seismicity in the upper East Rift Zone has returned to typical levels over the past couple of days, with just a few small earthquakes.

Puʻu ʻŌʻō Observations: Webcam images over the past 24 hours show persistent glow at long-term sources at Puʻu ʻŌʻō, including the pit on the west side of the crater that holds a small lava pond. There were no significant changes in East Rift Zone seismicity over the past 24 hours. The tiltmeter at Puʻu ʻŌʻō recorded deflationary tilt over the past day. The sulfur dioxide emission rate from all East Rift Zone vents was about 250 metric tons/day when last measured on February 22, 2017. https://hvo.wr.usgs.gov/activity/kilaueastatus.php

Pāhoehoe lava from Kilauea Volcano

Pāhoehoe lava inches towards the ocean in Hawai‘i Volcanoes NP, 3/2/17 Photo/Janice Wei.

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Pavlof rests, for now!

Posted by feww on March 31, 2016

Pavlof ash eruption blankets large area


Pavlof volcano, as seen from Cold Bay, showing deposits of March 27-28 eruption. Photo by Candace Shaack.

Date: March 29, 2016 9:06 AM
Photographer/Creator: Candace, Shaack
URL: http://www.avo.alaska.edu/images/image.php?id=93861

Alert Level: WATCH
Current Aviation Color Code: ORANGE

The eruption of Pavlof Volcano has greatly diminished in intensity over the past day… Seismic activity remains elevated at levels above background and over the past 24 hours has been characterized by occasional short-duration tremor bursts, likely associated with the low-level ash emissions.

Although the intensity of the eruption has diminished, it is possible for conditions to change at any time and more significant ash emissions may resume with little to no warning. —AVO

KILAUEA VOLCANO (VNUM #332010)
19°25’16” N, 155°17’13” W, Summit Elevation 4,091 ft (1,247 m)
Alert Level: WATCH
Current Aviation Color Code: ORANGE

Activity Summary: Kīlauea continues to erupt in a relatively steady fashion at both the summit, where there is a circulating lava lake, and from its East Rift Zone, where surface lava flows are active northeast of the Puʻu ʻŌʻō vent. The East Rift Zone lava flow currently poses no threat to nearby communities. Earthquake rates and seismic tremor are at background levels. —HVO

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40 Degrees Below Average

Posted by feww on November 11, 2014

Images of the Day:

Temps as much as 40 degrees below average from the Rockies to the Plains

Unseasonably cold temperatures brought by a polar vortex [arctic airmass] will continue to surge southward through the central U.S. Temperatures are forecast to drop by ass much as 40 degrees below climate average for areas east of the Rockies into the Great Plains: NWS/NOAA

temps-november-11-2014

Great Falls, Montana – Great Falls International Airport (KGTF)

Temperature: -20°C [-4°F]
Humidity: 86%
Wind Speed: SW 7 MPH
Barometer: 1044.0 mb [30.53 in]
Dewpoint: -22°C [-7°F]
Wind Chill: -18°F (-28°C)
Tuesday Night Forecast Low: -26°C [-15 °F]

  • Wind chill values:  as low as -35°C [-31 °F]

Last Update by NWS on 11 Nov 7:53 am MST

 Related Links

⊆⊗⊇

June 27th Lava Flow Ignites First Home in Pahoa, Hawaii

Active lava has moved to within about 20 meters (22 yards) of the transfer station fence and also continued to expand through private property across the street from the station. At 11:55 AM, HST, an unoccupied home on that lot was set on fire by advancing lava. Source: HVO

HVO Image-971
Helicopter view looking west across the lower part of the June 27th lava flow. Smoke plumes show areas of active lava breakouts. The transfer station is in the middle of the image (white roofed structures). At upper left, smoke rises from the margin of a new, northeastward directed finger of lava. Source: HVO

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June 27th Flow Could Reach Ocean by May 2015

Posted by feww on October 30, 2014

VOLCANIC HAZARDS
KILAUEA JUNE 27TH LAVA FLOW
STATE OF EMERGENCY PROCLAMATION
MASS EVACUATIONS
LOSS OF HABITAT
CROP DESTRUCTION
SCENARIOS 989, 900, 797, 787, 707, 444, 402, 070, 047, 017, 07, 02
.

Kilauea’s lava flow continues to cross Pāhoa Village

FIRE-EARTH estimates the June 27th flow could reach the ocean, currently about 10km away, by May 2015. Temperature of the lava exceeds 850°C along the leading edge of the most rapidly advancing part of the flow.

HVO Daily Update:  October 29, 2014 @09:12 AM HST (Wednesday, October 29, 2014 @ 19:12 UTC)

KILAUEA VOLCANO (VNUM #332010)
Coordinates: 19°25’16” N 155°17’13” W (19.421111N, 155.286944W)
Summit Elevation: 4091 ft (1,247 m)
Current Volcano Alert Level: WARNING
Current Aviation Color Code: ORANGE

Activity Summary: Kīlauea continues to erupt at its summit and within its East Rift Zone, and gas emissions remained elevated. Currently, the June 27th flow is advancing northeast through a residential area between Apaʻa St/Cemetery Rd and Pāhoa Village Road. During the past 24 hours, the leading edge of the most rapidly advancing part of the flow advanced at an average rate of roughly 10 m/hr (~11 yd/hr); between 2am and 630 am this morning, the rate of advance slowed to roughly 5 m/hr (~5.5 yd/hr). At 7AM, the flow front was about 240 m (~260 yd) straight-line distance from Pāhoa Village Road. Source: HVO

Currently, the flow continues to advance at a rate of 5 m/hr (~5.5 yd/hr), said HVO.

  • GPS receivers in the summit area have recorded slight contraction across the caldera since early July. The most recent sulfur-dioxide emission rate measurements for the summit were 2,700–3,600 tonnes/day (see caveat here) for the week ending October 21, 2014.
  • The ambient SO2 concentrations near the vent vary greatly, but are persistently higher than 10 ppm and frequently exceed 50 ppm (upper limit of detector) during moderate trade winds.
  • The gas plume typically includes a small amount of ash-sized tephra (mostly fresh spatter bits and Pele’s hair from the circulating lava lake). The heaviest pieces are deposited onto nearby surfaces while the finer bits can be carried several kilometers before dropping out of the plume.


A view of the flow over Cemetery Rd./Apaʻa St. The transfer station is at the top of the image. Source: HVO


The June 27th flow remains active, and is slowly approaching Pāhoa Village Road. This photo was taken just before 10 am, and shows the flow front moving through private property towards a low point on the road. At 11:30 am today, the flow front was 215 m (235 yards) from Pāhoa Village Road. Source: HVO


This photo looks downslope from Cemetery Road, and shows the pasture and cemetery that the flow front advanced through several days ago. Much of the cemetery has been covered by lava, but a kipuka has left a portion of the cemetery uncovered for now. Source: HVO

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Lava Enters Two Residences in Pāhoa

Posted by feww on October 29, 2014

VOLCANIC HAZARDS
KILAUEA JUNE 27TH LAVA FLOW
STATE OF EMERGENCY PROCLAMATION
MASS EVACUATIONS
LOSS OF HABITAT
CROP DESTRUCTION
SCENARIOS 989, 900, 797, 787, 707, 444, 402, 070, 047, 017, 07, 02
.

Kīlauea June 27th flow enters Pāhoa, Hawaii

Lava is crossing Pāhoa Village, Hawaii at a rate of about 15 m/hr (16yd/hr), according to observers from Hawaiian Volcano Observatory (HVO).

Tuesday, October 28, 2014 5:57 PM HST (Wednesday, October 29, 2014 03:57 UTC)

Kīlauea Volcano Activity Summary: Kīlauea continued to erupt at its summit and within the East Rift Zone, and gas emissions remained elevated. The advance rate of the narrow leading edge has been variable over the past day, and as high as 16 meters (17 yards) per hour. The flow width was less than about 50 meters (55 yards) at the leading edge and as wide as 150 meters (165 yards) immediately upslope as breakouts have occurred along margins of the flow. Portions of the flow continued to inflate by as much as 2 meters as new fresh new lava was delivered to the advancing flow front.

As of 5:30 PM, the flow was 310 meters (340 yards) in a straight line distance from Pāhoa Village Road and about 900 meters (985 yards) in a straight-line distance from Highway 130.

The lava lobe upslope of Apa`a Street advanced about 30 meters (82 yards) since yesterday. [Source: HVO]

June 27th Lava Flow Observations:



Top: The most rapidly advancing lobe of the flow entered the first occupied residential property at about 2 am HST Tuesday morning, and is continuing to advance northeast towards Pāhoa Village Road, currently at a rate of 15 m/hr (16 yd/hr). HVO expects the flow to cross Pahoa Village Road between Apaʻa St and Post Office Road. Bottom: Note the inflated flow behind the fence, which is chest-high. (Source: HVO)


The June 27th lava flow burns vegetation as it approaches a property boundary above Pāhoa early on the morning of Tuesday, October 28, 2014. (Source: HVO)

Related Links

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Volcanic Earthquakes Continue to Rattle Hawaiʻi Island

Posted by feww on May 4, 2014

SEISMIC HAZARD
HEIGHTENED GLOBAL SEISMICITY
VOLCANIC HAZARD
NIGHTMARE SCENARIOS 07, 08
.

Kilauea eruption continues at summit and within east rift zone: HVO

At least 22 volcanic earthquakes have occurred on the Big Island since April 4, 2014. The largest shock measured 3.3Mw, striking a depth of about 8.4km, according to USGS/EHP.

Meanwhile the eruption continued at the summit and within the east rift zone of Kilauea volcano.

Big Island Earthquakes
EQ Location Map. Volcanic Earthquakes on Big Island. Source: USGS/EHP.

KILAUEA VOLCANO (VNUM #332010)
Location: 19°25’16” N, 155°17’13” W,
Summit Elevation: 1,247 m (4091 ft)
Current Volcano Alert Level: WATCH
Current Aviation Color Code: ORANGE

Activity Summary: The eruption continued at the summit and within the east rift zone. The summit tiltmeter network recorded minor fluctuationst and the level of the circulating summit lava lake dropped slightly. At the middle east rift zone, two lava flows have been active on the Pu`u `O`o crater floor, going beyond the crater rim to the north and southeast; flows to the southeast remain active. The Kahauale`a 2 lava flow most likely continued to be active near its front but our ability to monitor it is temporarily limited. Gas emissions remained elevated.

Recent Observations at Kilauea summit: The summit tiltmeters recorded minor fluctuations and the lava-lake level dropped slightly to an estimated 33-34 m (108-112 ft) below the floor of Halema`uma`u crater. Gas emissions continued to be elevated: during the week ending on 04/29/14, the summit SO2 emission rate varied between 3,600 and 7,400 tonnes/day (see caveat below); the ambient SO2 concentrations near the vent vary greatly, are persistently great than 10 ppm, and frequently exceed 50 ppm (upper limit of detector). The gas plume typically included a small amount of ash-sized tephra (mostly fresh spatter bits and Pele’s hair from the circulating lava lake); the heaviest pieces are deposited onto nearby surfaces while the finer bits can be carried several kilometers before dropping out of the plume. [Source: HVO]

Panorama of Halemaʻumaʻu Overlook Vent [HTcam] – Last Updated 2014-05-03 17:10:02 (HST)
Halema’uma’u Overlook Vent Thermal Webcam-2
This image is from a temporary thermal camera. The temperature scale is in degrees Celsius up to a maximum of 500 Celsius (932 Fahrenheit) for this camera model, and scales based on the maximum and minimum temperatures within the frame. Thick fume, image pixel size and other factors often result in image temperatures being lower than actual surface temperatures. [Source: HVO]

Mauna Loa Volcano, Summit

Live Panorama of Mokuʻāweoweo Caldera Thermal from the Northwest Rim [MTcam] – Last Updated 2014-05-03 17:30:36 (HST)

Moku'āweoweo Caldera
Mokuʻāweoweo Caldera Thermal Webcam. [Source: HVO]

Other Links

 

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How Many Volcanoes Firing?

Posted by feww on March 7, 2013

Global Volcanic Eruptions 2013: Tempo Rising?


Map of Volcanoes.
Background Map: University of Michigan. Designed and enhanced by Fire Earth Blog. Click image to enlarge.

Current Aviation Color Code: ORANGE

CLEVELAND VOLCANO (52°49’20” N 169°56’42” W; CAVW #1101-24-) – [Group A on the Global Map]
Wednesday, March 6, 2013 12:14 PM AKST (Wednesday, March 6, 2013 21:14 UTC)
Summit Elevation: 5676 ft (1,730 m)
Current Volcano Alert Level: WATCH
Source: AVO

1338849660_ak52
Cleveland viewed from an Alaska Airlines 737 en route to Adak, Alaska. [Carlisle Volcano, center of image. Mount Cleveland, lower right of image.]

Date: May 31, 2012 12:00 AM
Photographer/Creator: Read, Cyrus. Image courtesy of AVO/USGS.

1285607433_ak52
This GeoEye IKONOS image shows a faint plume issuing from Cleveland Volcano at 2:31 PM on September 14, 2010. Red in this image highlights areas of vegetation detected by the near-infrared channel
.

Date: September 14, 2010 10:31 PM UTC
Volcano(es): Cleveland
Photographer/Creator: Wessels, Rick
Image processed by AVO/USGS. Image copyright 2010 – GeoEye

KILAUEA VOLCANO (19°25’16” N 155°17’13” W; CAVW #1302-01-)
Wednesday, March 6, 2013 7:43 AM HST (Wednesday, March 6, 2013 17:43 UTC)
Summit Elevation 4091 ft (1,247 m)
Current Volcano Alert Level: WATCH
Current Aviation Color Code: ORANGE
Source: HVO

Kamchatka Volcanoes on ORANGE Alert [Group J on the Global Map]

  • PLOSKY TOLBACHIK VOLCANO (55.83 N, 160.39 E; CAVW #1000-24-)
    Elevation:  3,085 m (10119 ft )
  • SHEVELUCH VOLCANO (56.64 N, 161.32 E; CAVW #1000-27-)
    Elevation: 3, 283 m [the dome elevation: 2,500 m)
  • KIZIMEN VOLCANO (55.13 N, 160.32 E; CAVW #1000-23-)
    Elevation: 2,485 m (8151 ft)
  • KARYMSKY VOLCANO (54.05 N, 159.44 E; CAVW #1000-13-)
    Elevation 1,486 m (4874 ft)

Other Kamchatka Volcanoes on YELLOW Alert [Group J on the Global Map]

  • KLYUCHEVSKOY VOLCANO (56.06 N, 160.64 E; CAVW #1000-26-)
    Elevation:  4,750 m
  • BEZYMIANNY VOLCANO (55.97 N, 160.6 E; CAVW #1000-25-)
    Elevation: 2,882 m
  • GORELY VOLCANO (52.56 N, 158.03 E; CAVW #1000-07-)
    Elevation: 1,828 m

Volcanoes of the Kurile Islands

  • Snow (Chirpoi Is.)  – YELLOW
  • Ivan Grozny – YELLOW

Recent Activity/ Unrest at other volcanoes

Ongoing Activity

Volcano/Earthquake Links

Posted in Significant Event Imagery, significant events, significant geophysical disturbances, volcanic activity, volcanic eruption, volcanic event, volcanic hazard, volcanic unrest, volcano, volcano alert, volcano images, Volcano News | Tagged: , , , , , , , , , , , , , , , | Leave a Comment »

VolcanoWatch 26 June 2011

Posted by feww on June 26, 2011

VoW: The Restive Kīlauea

Kīlauea: Probably the World’s Most Active Volcano

Kīlauea is the youngest volcano on the Big Island of Hawai`i.


The active lava lake in Pu`u `Ō `ō and its levee. View looking east into Pu`u `Ō `ō, its crater partly filled by lava flows accumulating on the crater floor. The active lava lake in the crater is 205 m (673 ft) long and varies in width from 80–115 m (262–377 ft). The West Gap pit is in the central foreground, and the Puka Nui and MLK pits are to the right (the MLK pit is in back). The crater has filled in vertically about 100 m (328 ft) since the crater collapsed on March 5, 2011, at the start of the uprift Kamoamoa eruption. It still has about 12 m (39 ft) to go to reach the level of the crater floor prior to the collapse. Source of image and caption: HVO. Click images to enlarge.


Lighter-colored patches of lava on the crater floor are recent overflows. Source: HVO.


Along with overflows, low-level spattering from points wandering around the perimeter of the lava lake continually builds up the levee that impounds the lake. Source: HVO.


The lava lake’s levee stands up to 8 m (26 ft) above the surrounding crater floor. This steep-sided levee impounds the lava and forms what is called a “perched” lava lake. Pieces of the rim occasionally collapse into the lake, leading to sudden and fast-moving overflows of lava onto the crater floor. Source: HVO.


Map of Kīlauea. Source: HVO

  • Location: 19.425ºN 155.292ºW
  • Elev.: 1,277 m a.s.l.
  • Area: 1,430 km2 (13.7% of Hawai`i)
  • Volume: 25,000-35,000 km3

Click HERE for more images and information …

Weekly Volcanic Activity Report

(based on SI /USGS report for 15 June – 21 June 2011)

New activity/unrest:

FEWW Map of Volcanoes


Map of Volcanoes. Background Map: University of Michigan. Designed and enhanced by Fire Earth Blog. Click image to enlarge.

Ongoing Activity

Current Alerts for U.S. Volcanoes

  • Kilauea Watch Orange 2011-06-25 07:53:30
  • Pagan Advisory Yellow 2011-06-24 10:23:48
  • Long Valley Volcanic Center Normal Green 2011-06-24 17:58:30
  • Mauna Loa Normal Green 2011-06-04 07:16:42
  • Hualalai Normal Green 2011-06-04 07:16:42
  • Haleakala Normal Green 2011-06-04 07:16:42
  • Mauna Kea Normal Green 2011-06-04 07:16:42
  • Yellowstone Normal Green 2011-06-01 14:15:51
  • Lo`ihi Unassigned 2011-06-04 07:16:42

US Volcanoes: Webcams

Related Links

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VolcanoWatch Weekly [1 Apr 2011]

Posted by feww on April 1, 2011

Summary of Weekly Volcanic Activity Report

[23 March-29 March 2011 — Source of volcano activity list: SI/USGS]

HAWAIIAN VOLCANO OBSERVATORY DAILY UPDATE — Thursday, March 31, 2011 8:01 AM HST (18:01 UTC)

KILAUEA VOLCANO
Location: 19°25’16” N 155°17’13” W
Summit Elevation: 4,091 ft (1,247 m)
Current Volcano Alert Level: WATCH
Current Aviation Color Code: ORANGE

Activity Summary for past 24 hours: DI inflation started yesterday afternoon at the summit. The summit lava lake returned as the Pu`u `O`o lava lake episodically filled and drained while its level rose slowly. Summit seismicity was low, with a brief swarm of deep LPs while East Rift Zone seismicity increased slightly. Source

Lava Returns to Kīlauea Volcano’s east rift zone


Pu`u `Ō `ō crater seen on March 26 when  a small lake of fresh lava formed. Click image to enlarge.


Molten lava is seen in this webcam image deep in the vent inset within the east wall of Halema`uma`u Crater. Source

New Activity/Unrest:

* Mount Karangetang erupted about 6 hours after the March 11 Megaquake struck near the east coast of Honshu.

Map of Volcanoes


Map of Volcanoes.
Background Map: University of Michigan. Designed and enhanced by Fire Earth Blog. Click image to enlarge.

Ongoing Activity:

For additional information, see source.

Related Links:

FEWW Volcanic Activity Forecast

Other Related Links:

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Wildfires Wreaking Havoc Across the U.S.

Posted by feww on March 24, 2011

12 Large Fires Burning Across the Country

Active fires have consumed more than 155,000 acres, with 6 new fires reported.

States currently reporting large fires:

  • Arizona (1)
  • Arkansas (2)
  • Colorado (1)
  • Hawaii (1)
  • Kansas (1)
  • Missouri (1)
  • Oklahoma (3)
  • Texas (2)

“The Rocky Mountain, Southern and Southwest areas are at a preparedness level 2, meaning that these areas have high fire danger and multiple large fires.” Said National Interagency Fire Center.

Oklahoma

Wildfires forced Oklahomans from their homes in two northeastern towns on Wednesday evening as fire threatened dozens of homes near the town of Prue, Osage County, and  scores of homes in the Oak Park area of Bartlesville, Washington County, officials said.

Big Island Hawaii

A large wildfire set off by the eruption of the Kilauea volcano on Hawaii’s Big Island earlier this month has consumed about 2,000 acres of national park land. The fire is burning on the volcano’s east rift in the Hawaii Volcanoes National Park about 12km SE of the Kilauea Visitor Center.


The spreading wildfire was started by lava splatters at the volcano’s Kamoamoa fissure, which erupted on March 5, and is currently being fanned by strong trade winds, said a spokesman for the National Park Service. Photo Credit: Suzanne Snow.

Current Wildfires
Arizona Fires: 1 Acres: 4,000 * New fires: 0 Fires contained: 0
Duke (Coronado National Forest): 4,000 acres at 15 percent contained. This fire is 11 miles northeast of Nogales. Structures are threatened and roads are closed.
Arkansas Fires: 2 Acres: 832 * New fires: 0 Fires contained: 3
Queen Simmons (Arkansas Forestry Commission): 632 acres at 90 percent contained. This fire is ten miles northwest of Clinton.
Long (Arkansas Forestry Commission): 200 acres at 98 percent contained. This fire is six miles south of Canaan.
Colorado Fires: 1 Acres: 1,162 * New fires: 0 Fires contained: 0
Indian Gulch (Jefferson County): 1,162 acres at 25 percent contained. This fire is one mile west of Golden. Muir’s IMT 1 is assigned to the incident. Residences are threanted and evacuations are in place.
Information: Visit the Rocky Mountain Coordination Center.
Hawaii Fires: 1 Acres: 2,010 * New fires: 0 Fires contained: 0
Napau (Hawaii Volcanoes National Park): 2,010 acres. This fire is nine miles west of Kalapana.
Kansas Fires: 1 Acres: 144,000 * New fires: 1 Fires contained: 0
* Stanton County (Kansas Counties): 144,000 acres at 70 percent contained. This fire is 30 miles south of Johnson City.
Kentucky Fires: 0 Acres: 0 * New fires: 1 Fires contained: 1
Missouri Fires: 1 Acres: 100 * New fires: 0 Fires contained: 0
Crane Cemetary (Mark Twain National Forest): 100 acres at 40 percent contained. This fire is six miles north of Houston.
Oklahoma Fires: 3 Acres: 1,770 * New fires: 1 Fires contained: 2
Bread Town (Oklahoma Department of Forestry): 880 acres at 75 percent contained. This fire is three miles northeast of Stringtown.
Rocky (Oklahoma Department of Forestry): 530 acres at 70 percent contained. This fire is four miles northeast of Marble City.
Trall Hollow (Oklahoma Department of Forestry): 360 acres at 85 percent contained. This fire is one mile southeast of Bell.
Texas Fires: 2 Acres: 1,400 * New fires: 3 Fires contained: 1
* Ralph Keller Ranch (Texas Forest Service): 1,000 acres at zero percent contained. This fire started on private land 14 miles northeast of Marathon. Residences are threatened.
* Koch (Texas Forest Service): 400 acres at zero percent contained. This fire started on private land nine miles south of Andrew

Source: National Interagency Fire Center

Year-to-date statistics
Period: 2011 (1/1/11 – 3/23/11)
Acres: 588,237

9-year Average
Acres: 396,282

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Tectonics Update – March 10

Posted by feww on March 10, 2011

Kilauea Volcanic Activity

Current Volcano Alert Level: WATCH
Previous Volcano Alert Level: WARNING
Current Aviation Color Code: ORANGE


Lava fountains from the northeastern vent of the Kamoamoa eruption. Pu`u `Ō `ō cone is seen in the background. Credit: HVO. Click image to enlarge.

Issued: March 9, 2011, 03:45UTC
Source: Hawaiian Volcano Observatory
Notice Number: 2011/H3

  • Eruption on Kīlauea volcano: East rift zone [end of the 2.3 km Kamoamoa fissure located between Pu’u ‘Ō’ō and Nāpau Crater.”Lava erupted from the western end of the fissure, which is near the eastern rim of Nāpau Crater, has formed a channelized ‘a’ā flow that extends 2.9 km (1.8 mi) to the southwest. The lava flow ranges from 80 to 290 m (260 to 950 ft) wide, but the active channel within the flow is only about 20 m (65 ft) wide.”
  • Lava spatter As high as 50 m
  • SO2 emission rate down to 4,400 tpd
  • Deflation slowing at both the summit and east rift zone.


A view of Halema`uma`u vent using thermal imaging. “The lava level dropped considerably over the past several days, retreating to a narrow opening deep within the vent cavity.” Source: HVO.  Click images to enlarge.


Extent of the Kamoamoa Fissure eruption, beginning March 5, 2011. The line of fissures extends 2.3 km, between Nāpau Crater and Pu`u `Ō `ō. The peach colored flow shown on the map is from the 1997 Nāpau Crater eruption. Source: HVO.

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JAPAN’s Sendai Quake Aftershocks

At least 25 aftershocks have been reported by Japan’s Meteorological Agency (JMA) since yesterday’s powerful 7.2Mw quake which struck off the coast of Miyagi Prefecture, about 168km east of the city of Sendai.

Two of the largest shocks measured M6.1 and 6.8, striking Sanriku Oki region at 03:45 JST [03:51 JST 10 Mar 2011] and 06:24 JST  [06:29 JST 10 Mar 2011] respectively.

FIRE-EARTH forecasts intense seismic activity in Japan Region during the 2011 – 2015 period.

Further deatails would be released on the need-to-know basis, partly to prevent Internet prophets from cashing in on FIRE-EARTH forecasts.


Sendai 7.2 earthquake. List of aftershocks. Source: JMA.
Click image to enlarge.

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Recent Significant Earthquakes

PNG

  • Magnitude 6.5 – NEW BRITAIN REGION, PAPUA NEW GUINEA –
    • Wednesday, March 09, 2011 at 21:24:51 UTC
    • Depth: 29km
    • Location:  6.022°S, 149.659°E

CHINA

  • Magnitude 5.4 – MYANMAR-CHINA BORDER REGION
    • The quake was a magnitude 5.8 shock striking Yingjiang County in southwest China’s Yunnan Province, Xinhua said.
    • At  least 24 people were killed and more than 250 others injured as a result.
    • The shock also destroyed about 1,000 buildings.

New Zealand

  • Magnitude 4.5 aftershock strikes 10 km east of Christchurch at a depth of 10km.
  • Magnitude 4.0 aftershock strikes about 5km from Lyttelton at a depth of 10km.

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