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Posts Tagged ‘Halemaumau crater’

Mini-Updates of Kīlauea Summit and LERZ Activity – 060802

Posted by feww on June 8, 2018

Mini-Updates of Kīlauea Summit and Lower East Rift Zone Activity

Kilauea – 2018-06-08 13:05:32
At 2:44 AM HST, a small explosion occurred from Kīlauea’s summit. PTWC magnitude is 5.5, but shaking was equivalent to a ~M4 event. No radar observations, but satellites suggest any plume is less than 10,000 feet ASL.

Another explosion at the summit of Kīlauea

On June 6, at 4:07 p.m. HST, an explosion within Halema‘uma‘u sent an ash and gas plume to a height of about 10,000 feet above sea level. The explosion released energy equivalent to that of a magnitude-5.6 earthquake; a result of the explosion-related energy release was ground shaking felt throughout the summit area. This plume is typical of those produced by the larger explosions that have occurred at Kīlauea’s summit. [USGS-HVO]

PAL – 060802

M 5.2 Volcanic Eruption
19.405°N, 155.281°W [5km WSW of Volcano, Hawaii]
1.0 km depth
2018-06-08 12:44:34 UTC

This earthquake was associated with an ash explosion that occurred around 02:44 AM Friday, June 8th local time from Halema’uma’u crater. A modest plume may have been generated and drifted southwest with possible ashfall at downwind locations. [USGS]

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Mini-Updates of Kīlauea Summit and Lower East Rift Zone Activity

Posted by feww on June 7, 2018

Volcanic Activity: Mini-Updates of Kīlauea Summit and Lower East Rift Zone

Kilauea – 2018-06-07 02:38:17 UTC
Explosive eruption at Kīlauea summit, equivalent to energy release of M5.6 (preliminary), occurred at 4:07 PM HST. Ash plume reached 10,000 ft above sea level. Downwind communities may experience ashfall. [USGS-HVO]

Ros T. – 060702

M 5.4
19.413°N 155.280°W [6km SW of Volcano, Hawaii]
0.6 km depth
2018-06-07 02:06:38 UTC

This earthquake was associated with an ash explosion that occurred around 4:06 PM Tuesday, June 6th local time from Halema’uma’u crater. The plume extended to about 10,000 ft above sea level and drifted southwest with possible ashfall at downwind locations. USGS

Nearby Places
Direction data (below) indicate the position of the event relative to the place.

  • Volcano, Hawaii: 5.8 km (3.6 mi) SW – Population: 2,575
  • Hawaiian Paradise Park, Hawaii: 37.9 km (23.5 mi) WSW – Population: 11,404
  • Hilo, Hawaii: 40.3 km (25.1 mi) SSW – Population: 43,263
  • Kailua-Kona, Hawaii: 79.6 km (49.5 mi) ESE – Population: 11,975
  • Honolulu, Hawaii: 341.3 km (212.0 mi) SE – Population: 371,657

Hawaii Island 30 Days, Magnitude 2.5+ earthquakes: 1,726


Diagnostics and Forecasts available via FIRE-EARTH Pulsars.

Webcam Notes

This image is from a temporary thermal camera positioned on the northwest flank of Puʻu ʻŌʻō, looking southeast at Puʻu ʻŌʻō’s summit crater. The temperature scale is in degrees Celsius up to a maximum of 500 degrees (932 degrees Fahrenheit) for this camera model, and scales automatically 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: 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: 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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Activity at Kilauea – Satellite Images

Posted by feww on March 24, 2011

Kilauea: The World’s Most Active Volcano

Location: 19°25’16″N 155°17’13″W
Summit Elevation: 1,247 m
Current Volcano Alert Level: WATCH
Current Aviation Color Code: ORANGE
Source: HVO

Wednesday, March 23, 2011 7:34 AM HST (Wednesday, March 23, 2011 17:34 UTC)

Activity Summary for past 24 hours

  • No molten lava visible at Kilauea volcano surface
  • DI deflation continues
  • Lava lake crusted over very deep within the summit vent
  • Summit seismicity slightly elevated
  • SO2 emissions and ERZ seismicity are low at summit and East Rift ZoneS
  • Sulfur dioxide emission rate about 200 tons per day ((preliminary reading on March 22, 2011)

[NOTE: DI stands for ‘deflation-inflation’ and denotes a volcanic event of uncertain significance.]

Click images to enlarge. Download larger image (571 KB, JPEG)  — captured March 18, 2011

Download larger image (436 KB, JPEG)  —  captured January 16, 2010

“In the image—which depicts mostly infrared wavelengths of light—vegetation is green, older lava flows are brown to black, and “hot” areas are red. In this case, the scorched land and fresh lava in the burn scar appears slightly red and brown, while the still-burning forest fire appears bright red. In the 2010 image, lava stands out within and near Pu’u ‘O’o.” Source: NASA-EO.

On March 5, 2011, a new fissure appeared on Kilauea, the world’s most active volcano. Fresh lava from Kamoamoa fissure spewed to a height of about 50 meters above ground, setting off a forest fire which has since consumed about 2,000 acres.

Kamoamoa fissure is located about 13km  east of the volcano summit, lying along the rift zone between Pu’u ‘O’o and Napau Crater .

The above false-color images of of the are were taken by ALI on the NASA’s EO-1 satellite captureda (top) on March 18, 2011, bottom on 16, 2010 (included for comparison).

Kilauea’s latest episode of ongoing activity began in 1983.

Related Links

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Kilauea SO2 emissions tops 10,000 tpd

Posted by feww on March 8, 2011

Kilauea Volcano: Elevated Seismicity, Increased Effusion

Volcano Shows Increased Effusion Rates, Significantly Elevated Seismicity at summit and east rift zone

Lava pours from the fissure just after daybreak and cascades out of sight into a deep crack. HVO geologist near upper right for perspective. Source: HVO. Click image to enlarge.

HVO/USGS Volcanic Activity Warning

Volcano: Kilauea (CAVW #1302-01-)
Current Volcano Alert Level: WARNING
Current Aviation Color Code: ORANGE
Previous Aviation Color Code: RED

Issued: Monday, March 7, 2011, 6:13 PM HST (March 8, 2011, at 04:1UTC)
Source: Hawaiian Volcano Observatory
Notice Number: 2011/H2
Location: N 19 deg 25 min W 155 deg 17 min
Elevation: 4,091 ft (1,247 m)
Area: HI Hawaii and Pacific Ocean

Volcanic Activity Summary from HVO:  Eruption continues at Kīlauea volcano’s east rift zone  with intermittent activity at alternating locations along a 2.3 km long fissure between Pu’u ‘Ō’ō and Nāpau Crater. Effusion rates are high, with lava spatter reaching as high as  30m.

East rift zone gas emissions are significantly elevated above the 300 tonnes/day measured during the past several months and as recently as March 5, prior to the fissure eruption. Gas measurements on March 6 show an average SO2 emission rate of 10,000 tonnes/day, the highest measured on the east rift zone since an eruptive surge in July 2008 produced an emission rate of 7,000 tonnes/day. Summit SO2 emissions on March 6 were around 600 tonnes/day.

The TEB eruption system downrift (ENE) of Pu’u ‘Ō’ō appears to have shut down. During today’s overflight of the flow field, no active lava flows were observed on the pali or coastal plain.

Seismicity remains significantly elevated at both Kīlauea’s summit and east rift zone.

Deflation appears to be slowing at the summit and east rift zone.

At Kīlauea’s summit, the lava lake within the Halema’uma’u Crater vent is about 200 m deep, based on visual estimates. A rockfall within the vent at 2:23 p.m. HST today produced a vigorous dusty brown plume.

The fissure is located just west of Pu`u `Ō `ō Crater. Spatter was reaching heights of 40 m (130 ft). Source: HVO

Most of the day’s activity was focused at this vent, around which a low cone was forming. Pu`u `Ō `ō is visible in the background to the northeast. Source: HVO

Source: HVO.  Click image to enlarge.

Video showing lava pouring from the fissure into a seemingly bottomless crack

Video showing lava pouring from the fissure into a seemingly bottomless crack. Napau Crater in the background. Helicopter for scale.
Video showing lava pouring from the fissure into a seemingly bottomless crack. Napau Crater in the background. Helicopter for scale. Source: HVO

Video showing spattering from the most persistent vent of the day just west of the base of Pu`u `Ō `ō near the northeastern end of the fissure system.
Video showing spattering from the most persistent vent of the day just west of the base of Pu`u `Ō `ō near the northeastern end of the fissure system.

Lava spatters above the fissure just west of the base of Pu`u `Ō `ō.
Lava spatters above the fissure just west of the base of Pu`u `Ō `ō

Related Links

HVO Links:

Kīlauea Update | Mauna Loa Status | Deformation | Maps | Webcams | Images | Movies

Hawaii Volcanoes  Webcams

Kīlauea Summit

Halema`uma`u, Kīlauea Volcano
Halema`uma`u from HVO
Halema`uma`u from Overlook, Kīlauea Volcano, Hawaii
Halema`uma`u from Overlook
Kīlauea East Rift Zone

Pu`u `Ō `ō, Kīlauea Volcano
Pu`u `Ō `ō
Thanksgiving Eve Breakout From Pu`u `Ō `ō
Thanksgiving Eve Breakout From Pu`u `Ō `ō
Napau Crater, Kīlauea Volcano
Napau Crater
Mauna Loa Summit

Mokuawe`owe`o, Mauna Loa Summit Caldera
Mokuawe`owe`o, Mauna Loa Summit Caldera

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Hawaii’s Kilauea Billows 2,500 MT of SO2

Posted by feww on December 2, 2009

Kilauea’s Halemaumau crater billows up to 2,500 metric tons of sulfur dioxide each day

The vog (volcanic fog) billowed out from Kilauea contains large quantities of sulfur dioxide which is killing crops in the Big Island.

With stagnant winds present, Halema`uma`u plume stands straight up, showing off the distant, but bright, full moon [Photo Date: November 13, 2008 ]. Photo Credit: M. Poland; Source: USGS

The U.S. Department of Agriculture declared Hawaii County a natural disaster area, which means the farmers there could apply for low interest loans from the federal government,  a report said.

However, it’s not known what the farmers are meant to do with the money, or how they would pay it back, since there’s no agreement with Kilauea concerning the  SO2 emissions!

In reality these loans should be “relocation grants” to allow the farmers leave the Big Island (in a hurry). As of December 2009, the only indication is that there would more SO2 billowing out of Kilauea in the coming weeks, month and possibly years. That situation could change, of course, but the farmers shouldn’t put too much hope in that.

“We can wash our trucks in the morning and in the afternoon you rub your hand across the top of the truck and it feels like sand paper,” said Phil Becker who, together with his wife, own  Aikane Plantation Coffee Company on the southern part of Big Island.

The Beckers previously grew and sold protea, however, vog has destroyed their plants.

“We’ve only got about three plants left after about 181 is what we started with and we’ve only got three that are trying to survive. It’s also impacted our cattle as far as the grass not recovering the way it usually does,” Phil Becker was reported as saying.

These days the Beckers are focusing their efforts on growing coffee … and even that is suffering. This year’s crop is about a third the size of a normal crop.

Not only So2 reacts with moisture in the air to give extremely corrosive sulfurous acid, which covers the leaves and stalks of plants, killing them, the deadly gas molecules also block the sun as they permeate the stratosphere and prevent needed sunshine from reaching the crops.

Kilauea Status Reports, Updates, and Information Releases

Aerial view of Pu`u `Ō `ō and vicinity

July 21 Eruption Near-view Map: November 25, 2009

Map showing the July 21, 2007 eruption flow field. The Thanksgiving Eve Breakout (TEB) flow is currently active and is that portion of the July 21, 2007 eruption flow field that extends south from the TEB vent to the ocean. Light red is the area of the flow as of November 7, 2009, while the bright red shows the flow field expansion that occurred between November 7 and November 25. Source of Image and Caption: HVO

HVO DAILY UPDATE Tuesday, December 1, 2009 7:47 AM HST (Tuesday, December 1, 2009 17:47 UTC)

Coordinates: 19°25’16” N 155°17’13” W
Summit Elevation 4091 ft (1247 m)
Current Aviation Color Code: ORANGE
Current Volcano Alert Level: WATCH

Activity Summary for past 24 hours: Kilauea continued to erupt from two vents. At the summit, a lava pond was visible for several hours before draining and crusting over. Sulfur dioxide emission rates from the Halema`uma`u and east rift zone vents remain elevated. From the east rift zone vent, lava flows through tubes to the coast and is entering the ocean at several locations west of Kalapana.

Related Links:

Other Related Links:

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Kilauea crater summit collapses

Posted by feww on July 6, 2009

Kilauea volcano’s Halemaumau crater summit collapses

HVO Geologists last week reported  a collapse of the vent wall had  blocked the Halemaumau crater vent with a large amount of volcanic materials.

The first collapse produced a seismic event equal to a magnitude-2.4 earthquake, shaking the ground at Hawaii Volcanoes National Park’s Thomas A. Jaggar Museum overlook, adjacent to HVO. The collapse also produced what geologists described as “a loud booming sound heard across the (Kilauea) caldera area.” hawaiimagazine .

Later the same day, a segment of the Halemaumau crater floor collapsed, enlarging the vent rim and blocking the glow from the Halemaumau.

Kilauea has been ejecting often large plumes of ash, smoke, steam and other gasses from the vent since March 2008 .

Halemaumau crater vent ash cloud immediately after  first collapse (Source: USGS)

Segment collapsed
A segment of Halemaumau crater floor collapses into vent just under an hour after initial collapse
(Source: USGS)

Evening Glow from Halemaumau crater vent photographed just hours before the collapse (Source: USGS)

Free-hand drawing shows extent of crater floor collapse  (Source:  United States Geological Survey  USGS)

Related Links

Kilauea Volcano Continues to Discharge Lava

VolcanoWatch Weekly [2 July 2009]

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