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Archive for the ‘ashfall’ Category

Galeras Volcano Erupts Again

Posted by feww on April 26, 2009

Colombia’s Galeras Erupts Again!


The Galeras volcano located south of Colombia’s Nariño department (state) erupted again Friday. Photo: Colombia Reports. Image may be subject to copyright.

The Galeras volcano located south of Colombia’s Nariño department (state) erupted again Friday night (local time), prompting the local authorities to raise the alert level to red. Seismic activities were detected at the the volcano shortly after the volcano erupted, Colombia Reports said.

An evacuation order was issued for the people people living near the volcano, however, only about  200 heeded the order.

No casualties have been reported.

More details would follow, if the activity continues.

Related Links:

    Other Environmental News from Colombia:

    Posted in ashfall, evacuation order, Friday eruption, Galeras, volcanic eruption | Tagged: , , , , | Leave a Comment »

    Llaima Volcano Erupts Explosively

    Posted by feww on April 5, 2009

    Chile’s Llaima volcano, one of the largest and most active volcanoes in South America erupts again!

    Llaima volcano erupted again spewing lava and ash in southern Chile and prompting evacuations and landslide hazard warnings.


    Llaima Volcano erupts. Reuters photo dated April 5, 2009. Image may be subject to copyright.


    Llaima Volcano erupts. Reuters photo dated April 5, 2009. Image may be subject to copyright.

    The 3,125-meter-high Llaima volcano spewed smoke and ash about 600 meters into the air with lava flowing about 1,000 meters down the volcano.

    The eruption melted the snow around the crater, raising the possibility of flooding and mudslide and prompting the officials to evacuate the nearby villages.

    The risk of mud avalanches is high, the officials said, which may cause the Calbuco River to rise.

    Llaima volcano, whose last significant eruption occurred in July 2008, is located about 600 kilometers south of the Chilean capital, Santiago.


    Llaima Volcano erupts. Source: Periodistadigital. Image may be subject to copyright.


    Llaima Volcano, Chile. [Dated 6 December 2004 ?] This file is licensed under Creative Commons Attribution 2.0. Credit: Jespinos

    Excerpts from Reuters report:

    It said an ash-swollen river near the volcano had swept away a pedestrian bridge, but there was no other damage. Bright red bursts of lava were visible in the night sky as Llaima erupted.

    The office said on its website that there were “permanent explosions that reach 600 metres (650 yards) above the crater. Falling ash is visible and … a flow of lava of more than 1,000 metres (1,100 yards) has been observed.”

    Chile’s chain of some 2,000 volcanoes is the world’s second-largest after Indonesia. Some 50 to 60 are on record as having erupted, and 500 are potentially active.

    Related Links:


    Posted in ashfall, Calbuco River, evacuation order, Explosive Eruption, santiago | Tagged: , , , , | 2 Comments »

    Redoubt Update: March 31, 2009

    Posted by feww on March 31, 2009

    Redoubt Activity – Color Code RED : Alert Level WARNING

    Date Time :  March 31, 2009 1330 UTC/ March 31, 2009 0530 AKDT

    On 2009-03-31 at 05:28:55 AKDT AVO reported:

    Seismicity at the volcano has been low, but remains above background level. Weak tremor and small discrete earthquakes have been observed in the past hour.

    Latest Images from AVO


    Photograph of impact from the volcanic ash fall out in Nikiski, AK from Redoubt volcano. This plume was generated during the March 28, 15:29 AKDT, 2009 event, and ash fall began at approximately 16:16 AKDT and lasted maybe 5 minutes. Fine ash is resuspended as vehicles drive over the recently deposited ash fall deposit. Picture Date: March 30, 2009 16:45:00 AKDT. Image Creator:  Kristi
    Wallace. Image courtesy of AVO/USGS. [Image added March31, 2009]


    Photograph of Redoubt Volcano in eruption taken during observation and gas data collection flight on March 30, 2009. View is to the east. Continuous emission of volcanic gas, water vapor, and ash is producing a plume rising to about 15,000 feet above sea level. The haze at left below the drifting cloud is a region of active ash fall. AVO scientists observed ash falling up to 25 miles downwind. Picture Date: March 30, 2009 AKDT. Image Creator: Heather Bleick. Image courtesy of AVO/USGS.
    [Image added March31, 2009]


    Photograph taken during observation and gas data collection flight on March 30, 2009. Looking east / southeast down into the upper crater rim of Redoubt Volcano.
    Picture Date: March 30, 2009 AKDT. Image Creator:  Heather Bleick. Image courtesy of AVO/USGS.


    Photograph taken during observation and gas data collection flight on March 30, 2009. Picture Date: March 30, 2009 AKDT. Image Creator: Heather Bleick. Image courtesy of AVO/USGS.


    Photograph taken during observation and gas data collection flight on March 30, 2009. Picture Date: March 30, 2009 AKDT. Image Creator: Heather Bleick. Image courtesy of AVO/USGS.


    Photograph taken during observation and gas data collection flight on March 30, 2009. Picture Date: March 30, 2009 AKDT. Image Creator: Heather Bleick. Image courtesy of AVO/USGS.


    Photograph taken during observation and gas data collection flight on March 30, 2009. Picture Date: March 30, 2009 AKDT.  Looking at the north flank of Redoubt Volcano.
    Image Creator: Heather Bleick. Image courtesy of AVO/USGS.


    Photograph taken during observation and gas data collection flight on March 30, 2009. Picture Date: March 30, 2009 AKDT. Image Creator: Heather Bleick. Image courtesy of AVO/USGS.


    Photograph taken during observation and gas data collection flight on March 30, 2009. Picture Date: March 30, 2009 AKDT.
    Looking east at Redoubt Volcano. Image Creator: Heather Bleick. Image courtesy of AVO/USGS.


    Photograph taken during observation and gas data collection flight on March 30, 2009. Picture Date: March 30, 2009 AKDT.  Looking at the north flank of Redoubt Volcano.
    Image Creator: Heather Bleick. Image courtesy of AVO/USGS.


    BSE image showing groundmass, with glass, plagioclase, pyroxene, and oxide microlites. The scale bar is absent here, but the image was collected at 400 X, compared with 100 X from image 17485 [SEE BELOW.]  Picture Date: March 30, 2009. Image Creator: Jessica Larsen.  Image courtesy of the AVO/UAF-GI.


    BSE image showing amphibole grain with reaction rim in sample AT-1605. Image Creator: Jessica Larsen.  Image courtesy of the AVO/UAF-GI.


    Redoubt 15:29 eruption, 3/28/2009. Picture Date: March 28, 2009 AKDT. Image Creator: Tricia Joy Sadler. Image courtesy of the photographer.


    Photograph of lightning from Redoubt’s 1:20 am March 28 eruption, courtesy of Bretwood Higman. Picture Date: March 28, 2009. Image Creator: Bretwood Higman. Image courtesy of Bretwood Higman.

    For background information and selection of previous images see:

    Posted in Alaska volcanoes, Anchorage, ashfall, redoubt eruption, volcanism | Tagged: , , , | 1 Comment »

    Redoubt Volcano Erupts Explosively

    Posted by feww on March 28, 2009

    Published at: March 28, 2009 06:05 UTC (March 27, 2009 22:05 AKDT)

    Redoubt Volcano Latest Observations (Source: AVO)

    2009-03-27 21:55:58 AKDT
    At 19:25 AKDT March 27, 2009 (3:25 UTC March 28) an explosive eruption occurred at Redoubt volcano.
    National Weather Service reports an ash cloud height of about 51,000 feet above sea level. This follows closely behind the eruption that occurred at approximately 17:35 AKDT (01:35 UTC) that sent ash to an estimated height of 40,000 feet above sea level.
    See the National Weather Service Redoubt Coordination Page for any ash fall advisories: http://pafc.arh.noaa.gov/volcano.php

    For background information and selection of previous images see:

    For Latest Images see below:


    Photograph of impact from the volcanic ash fall out in Nikiski, AK from Redoubt volcano. This plume was generated during the March 28, 15:29 AKDT, 2009 event, and ash fall began at approximately 16:16 AKDT and lasted maybe 5 minutes. Fine ash is resuspended as vehicles drive over the recently deposited ash fall deposit. Picture Date: March 30, 2009 16:45:00 AKDT. Image Creator:  Kristi
    Wallace. Image courtesy of AVO/USGS.


    Photograph of Redoubt’s March 27, 19:25 eruption cloud, as seen from near Homer. Photograph courtesy of Dennis Anderson. Picture Date: March 27, 2009 19:57:00. Image Creator: Dennis Anderson. Image courtesy of Dennis Anderson (via AVO)  http://www.auroradude.com


    Photograph taken during oberservation / gas collection flight to Redoubt Volcano on March 26, 2009. Image Creator:
    Tina Neal. Image courtesy of AVO/USGS.


    Ash cloud seen in the geostationary MTSAT data, courtesy of the National Weather Service, processed by the Cooperative Institute for Meteorological Satellite Studies at the University of Wisconsin-Madison . We are at the extreme edge of the view for the satellite which is over the equator in Asia. Picture Date: March 26, 2009 17:30:00 UTC. Image Creator: Jonathan Dehn. Image courtesy of the National Weather Service.


    Redoubt volcano viewed from the south over the ash-covered Crescent River Valley. Picture Date: March 26, 2009 17:18:45 AKDT. Image Creator: Game McGimsey. Image courtesy of AVO/USGS.


    View northeast over the piedmont lobe of the Drift Glacier and down the Drift River valley showing the effects of flooding caused by eruptions of Redoubt volcano earlier in the day. Picture Date: March 26, 2009 17:29:02 AKDT. Image Creator: Game McGimsey. Image courtesy of AVO/USGS.


    Photograph taken during observation / gas collection flight to Redoubt Volcano on March 26, 2009.
    Picture Date: March 26, 2009. Image Creator: Tina Neal. Image courtesy of AVO/USGS.


    Photograph taken during observation / gas collection flight to Redoubt Volcano on March 26, 2009. Picture Date: March 26, 2009. Image Creator: Tina Neal. Image courtesy of AVO/USGS.


    View west across Drift River of small eruption cloud over Redoubt volcano. Picture Date: March 26, 2009 16:08:16 AKDT. Image Creator: Game McGimsey. Image courtesy of AVO/USGS.


    Photograph of Redoubt’s ash cloud, taken on the morning of Thursday, March 26, 2009, by Robert Cole, Peninsula Airways pilot. Image courtesy of Robert Cole and PenAir.


    View of the ash-covered lower Crescent River Valley. Picture Date: March 26, 2009 17:17:25 AKDT. Image Creator: Game McGimsey. Image courtesy of AVO/USGS.

    OMI sulfur dioxide satellite image from the March 23 2009 eruptive events at Redoubt volcano. Colors represent relative amount of gas with dark orange/red being the highest and blue/purple the lowest. This is from combining 2 OMI orbits for March 23 2009. AURA/OMI: 03/23/2009 20:43 – 22:34 UTC, SO2 mass: 42.152 kt; Area: 285,359 km2, SO2 max: 58.87 DU at Lon: -149.05, Lat: 61.58. These data are from NASA’s EOS-Aura satellite and its Ozone Monitoring Instrument (OMI), courtesy of Dr. Simon Carn, Michigan Technology University. Picture Date: March 25, 2009.


    Photograph of ash fall at Homestead Lodge, about 35 miles south of Redoubt, on the western side of Cook Inlet. View is of the backyard, with ash. Picture Date: March 26, 2009. Image Creator:
    James Isaak. Image courtesy of the photographer.


    SEM image of ash particles erupted by Redoubt volcano on March 22, 2009. The ash sample was collected during the ashfall in Healy, Alaska by Pavel Izbekov on March 23, 2009. The image was acquired by Pavel Izbekov and Jill Shipman using ISI-50 Scanning Electron Microscope at the Advanced Instrumentation Laboratory, University of Alaska Fairbanks. Picture Date: March 24, 2009. Image Creator: Pavel Izbekov.  Jill Shipman. Image courtesy of the AVO/UAF-GI.

    Related Links and volcano entries for March 2009:

    Posted in Alaska volcanoes, ashfall, Aura Omi, EOS-Aura satellite, SO2 | Tagged: , , , , | 1 Comment »

    Weekly Volcano Watch: 26 March 2009

    Posted by feww on March 26, 2009

    Volcanic Activity Report: 18 March – 24 March 2009

    Source: SI / USGS Weekly Volcanic Activity Report

    New activity/unrest:

    VoW: Fonualei, Tonga Islands (SW Pacific)

    • Country: Tonga
    • Subregion Name: Tonga Islands
    • Volcano Type: Stratovolcano
    • Volcano Status: Historical
    • Last Known Eruption: 1957
    • Summit Elevation: 180 m (591 feet)
    • Latitude: 18.02°S  (18°1’0″S)
    • Longitude: 174.325°W  (174°19’30″W)
    • Source: USGS


    Fonualei:  Seen from the NE, Fonualei volcano has an upturned saucer profile. The small, less than 2-km-wide island of Fonualei contains a fumarolically active crater, which is breached to the SW with a fresh lava flow extending to the sea and forming a rugged shoreline. Blocky lava flows from a central pyroclastic cone have reached the sea through notches in the rim of a small caldera. Eruptions at Fonualei have been recorded since 1791, with the two largest taking place in October 1846 and July 1847. [In 1847,] explosive eruptions produced large pumice rafts, and ashfall damaged crops on the island of Vavua (56 km away) and fell on vessels up to 950 km distant. In 1939 explosive and effusive activity occurred from summit and flank vents, and water spouts were reported 1.6 km SE of the island. Photo by Paul Taylor (published in Taylor and Ewart, 1997). Caption: GVP

    FEWW Comment: Fonualei may be one of the next volcanoes in the Tonga region to erupt in the next 30-90 days.

    Ongoing Volcanic Activity:

    The Weekly Volcanic Activity Report is a cooperative project between the Smithsonian’s Global Volcanism Program and the US Geological Survey’s Volcano Hazards Program.

    Elevated Volcanic Activity in the US [Source: USGS]

    Mar 25, 2009 at 21:08:47 PDT [PDT is 7 hours behind of Coordinated Universal Time,UTC]

    The following U.S. volcanoes are known to be above normal background (elevated unrest or eruptions) or have shown activity that warranted an Information Release (for example, an earthquake swarm).

    Volcano Alert Levels & Aviation Color Codes defined at http://volcanoes.usgs.gov/activity/alertsystem.

    Volcano Hazards

    Redoubt: Alert Level=WATCH. Aviation Color Code=ORANGE. As of Mar 25, 2009, 13:35 ADT

    • No explosions in last 36 hours and seismicity has declined. Possible lava dome growth at the summit. Explosions could resume without much warning.
      (Change to current status occurred on Mar 25, 2009 13:35 ADT from Alert Level WARNING and Aviation Color Code RED )For more information see http://www.avo.alaska.edu/activity/Redoubt.php

    Kilauea: Alert Level=WATCH. Aviation Color Code=ORANGE. As of Mar 25, 2009, 07:53 HST

    • Elevated SO2 and some tephra from Halema`uma`u vent; elevated SO2 from Pu`u `O`o vent; lava in tubes to ocean. (Change to current status occurred on Jul 2, 2007 20:09 HST from Alert Level ADVISORY and Aviation Color Code YELLOW ). For more information see http://volcanoes.usgs.gov/hvo/activity/kilaueastatus.php

    Cleveland: Alert Level=ADVISORY. Aviation Color Code=YELLOW. As of Mar 24, 2009, 12:46 ADT

    Mauna Loa: Alert Level=ADVISORY. Aviation Color Code=YELLOW. As of Mar 2, 2009, 15:05 HST

    Program Webcams page links to webcams at 19 of the 169 active volcanoes in the U-S.

    Posted in ashfall, Chaiten, Fonualei, Kīlauea, volcanism | Tagged: , , , | Leave a Comment »