Weekly Volcanic Report

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SI / USGS Weekly Volcanic Activity Report

  • Wed, 21 Aug 2019 00:46:28 -0600: Asosan (Japan) - Report for 14 August-20 August 2019 - Smithsonian / USGS Weekly Volcanic Activity Report

    JMA reported that increased eruptive activity at Asosan that began on 28 July paused at 1110 on 16 August. An eruptive event was recorded at 1627 on 18 August; elevated eruptive activity continued at least through 19 August. The Tokyo VAAC reported that the eruptive event on 18 August produced an ash plume that rose to 2.1 km (7,000 ft) a.s.l. Ash plumes rose to 1.5-2.1 km (5,000-7,000 ft) a.s.l. and drifted N and NW during 19-20 August. The Alert Level remained at 2 (on a scale of 1-5).

    Source: Japan Meteorological Agency (JMA)

  • Wed, 21 Aug 2019 00:46:28 -0600: Klyuchevskoy (Russia) - Report for 14 August-20 August 2019 - Smithsonian / USGS Weekly Volcanic Activity Report

    KVERT reported that a weak thermal anomaly over Klyuchevskoy was visible in satellite images during 13-14 August. The Aviation Color Code remained at Orange (the second highest level on a four-color scale).

    Source: Kamchatkan Volcanic Eruption Response Team (KVERT)

  • Wed, 21 Aug 2019 00:46:28 -0600: Asamayama (Japan) - Report for 14 August-20 August 2019 - NEW - Smithsonian / USGS Weekly Volcanic Activity Report

    JMA reported that, after a small phreatic eruption occurred at Asamayama on 7 August, both seismic activity and sulfur dioxide emissions temporarily increased and then decreased later that day. During 8-19 August white plumes generally rose 400 m above the crater rim; occasionally they rose as high as 800 m. Sulfur dioxide emissions were 70-300 tons per day. On 19 August the Alert Level was lowered to 2 (on a scale of 1-5).

    Source: Japan Meteorological Agency (JMA)

  • Wed, 21 Aug 2019 00:46:28 -0600: Ebeko (Russia) - Report for 14 August-20 August 2019 - Smithsonian / USGS Weekly Volcanic Activity Report

    Volcanologists in Severo-Kurilsk (Paramushir Island), about 7 km E of Ebeko, observed explosions during 10-16 August that sent ash plumes up to 3 km (10,000 ft) a.s.l. and drifted SE. A thermal anomaly was identified in satellite images on 10 and 12 August. The Aviation Color Code remained at Orange (the second highest level on a four-color scale).

    Source: Kamchatkan Volcanic Eruption Response Team (KVERT)

  • Wed, 21 Aug 2019 00:46:28 -0600: Semisopochnoi (United States) - Report for 14 August-20 August 2019 - NEW - Smithsonian / USGS Weekly Volcanic Activity Report

    AVO reported that during 14-17 August seismicity at Semisopochnoi remained elevated and was characterized by periods of continuous tremor and discrete low-frequency earthquakes; seismic data became unavailable starting sometime on 17 August. Cloudy weather often prevented satellite views of the volcano, however some recent clear views indicated that the N cone crater had a smooth featureless area, indicating water or tephra at an elevation several meters below the previous floor. The Volcano Alert Level remained at Watch and the Aviation Color Code remained at Orange.

    Source: US Geological Survey Alaska Volcano Observatory (AVO)

  • Wed, 21 Aug 2019 00:46:28 -0600: Aira (Japan) - Report for 14 August-20 August 2019 - Smithsonian / USGS Weekly Volcanic Activity Report

    JMA reported that during 13-16 August crater incandescence at Minamidake crater (at Aira Caldera?s Sakurajima volcano) was occasionally visible in webcams at night. A small eruptive event was recorded on 18 August. The Alert Level remained at 3 (on a 5-level scale).

    Source: Japan Meteorological Agency (JMA)

  • Wed, 21 Aug 2019 00:46:28 -0600: Poas (Costa Rica) - Report for 14 August-20 August 2019 - Smithsonian / USGS Weekly Volcanic Activity Report

    OVSICORI-UNA reported that an eruptive event from vent A (Boca Roja) at Po�s generated a 1-km-high plume of steam, gas, and fine particulates at 0650 on 17 August. The event was preceded by an increase in tremor amplitude starting at 0500 that same day.

    Source: Observatorio Vulcanologico y Sismologico de Costa Rica-Universidad Nacional (OVSICORI-UNA)

  • Wed, 21 Aug 2019 00:46:28 -0600: Dukono (Indonesia) - Report for 14 August-20 August 2019 - Smithsonian / USGS Weekly Volcanic Activity Report

    Based on satellite and wind model data, and information from PVMBG, the Darwin VAAC reported that during 14-20 August ash plumes from Dukono rose to altitudes of 1.8-2.1 km (6,000-7,000 ft) a.s.l. and drifted NW, N, NE, and E. The Alert Level remained at 2 (on a scale of 1-4), and the public was warned to remain outside of the 2-km exclusion zone.

    Sources: Darwin Volcanic Ash Advisory Centre (VAAC),Pusat Vulkanologi dan Mitigasi Bencana Geologi (PVMBG, also known as CVGHM)

  • Wed, 21 Aug 2019 00:46:28 -0600: Shishaldin (United States) - Report for 14 August-20 August 2019 - NEW - Smithsonian / USGS Weekly Volcanic Activity Report

    AVO reported that during 14-20 August continuous, low-level tremor at Shishaldin was recorded by the seismic network and elevated surface temperatures were visible in infrared satellite images. The spatter cone in the crater had grown and partially filled the summit crater. The Aviation Color Code remained at Orange and the Volcano Alert Level remained at Watch.

    Source: US Geological Survey Alaska Volcano Observatory (AVO)

  • Wed, 21 Aug 2019 00:46:28 -0600: Ibu (Indonesia) - Report for 14 August-20 August 2019 - Smithsonian / USGS Weekly Volcanic Activity Report

    PVMBG reported that at 1107 on 14 August an ash plume from Ibu rose at least 800 m above the summit and drifted N. Seismicity was characterized by an explosion signal and earthquakes indicating rock avalanches. The Alert Level remained at 2 (on a scale of 1-4), and the public was warned to stay at least 2 km away from the active crater, and 3.5 km away on the N side.

    Source: Pusat Vulkanologi dan Mitigasi Bencana Geologi (PVMBG, also known as CVGHM)

  • Wed, 21 Aug 2019 00:46:28 -0600: Karangetang (Indonesia) - Report for 14 August-20 August 2019 - Smithsonian / USGS Weekly Volcanic Activity Report

    PVMBG reported that during 12-18 August lava continued to effuse from Karangetang?s Main and Dua craters. Avalanches of material traveled 1-1.5 km SW down the Nanitu and Pangi drainages, as far as 1.4 km down a drainage W of Pangi, and as far as 1.8 km down the Sense drainage. Sometimes dense white plumes rose to 500 m above the summit. The Alert Level remained at 2 (on a scale of 1-4).

    Source: Pusat Vulkanologi dan Mitigasi Bencana Geologi (PVMBG, also known as CVGHM)

  • Wed, 21 Aug 2019 00:46:28 -0600: Kadovar (Papua New Guinea) - Report for 14 August-20 August 2019 - Smithsonian / USGS Weekly Volcanic Activity Report

    Based on satellite data and wind model data, the Darwin VAAC reported that on 19 August an ash plume from Kadovar rose to an altitude of 1.5 km (5,000 ft) a.s.l. and drifted NW.

    Source: Darwin Volcanic Ash Advisory Centre (VAAC)

  • Wed, 21 Aug 2019 00:46:28 -0600: Tangkubanparahu (Indonesia) - Report for 14 August-20 August 2019 - NEW - Smithsonian / USGS Weekly Volcanic Activity Report

    PVMBG reported that during 12-18 August phreatic events at Tangkubanparahu's Ratu Crater continued to produce sometimes dense gray-to-white plumes that rose as high as 200 m above the vent, and dense black ash plumes that rose as high as 100 m. The emissions were accompanied by roaring. Ashfall was localized around Ratu Crater. The seismic network recorded continuous tremor. The Alert Level remained at 2 (on a scale of 1-4), and the public was warned to stay 1.5 km away from the active crater.

    Source: Pusat Vulkanologi dan Mitigasi Bencana Geologi (PVMBG, also known as CVGHM)

  • Wed, 21 Aug 2019 00:46:28 -0600: Karymsky (Russia) - Report for 14 August-20 August 2019 - Smithsonian / USGS Weekly Volcanic Activity Report

    KVERT reported that a thermal anomaly over Karymsky was visible in satellite images during 11-12 and 15 August. Volcanologists doing fieldwork on 14 August observed explosions and ash plumes that rose to 5 km (16,400 ft) a.s.l. Satellite images showed ash plumes drifting S and SE that same day. The Aviation Color Code remained at Orange (the second highest level on a four-color scale).

    Source: Kamchatkan Volcanic Eruption Response Team (KVERT)

  • Wed, 21 Aug 2019 00:46:28 -0600: Nevados de Chillan (Chile) - Report for 14 August-20 August 2019 - Smithsonian / USGS Weekly Volcanic Activity Report

    ONEMI and SERNAGEOMIN reported multiple explosions at Nevados de Chill�n?s Nicanor Crater during 14-20 August, each associated with long-period earthquakes. Two explosions on 14 August, at 0000 and 0029, produced gas emissions and ejected incandescent material onto the flanks. An explosion at 1200 on 16 August produced a grayish ash plume that rose 110 m. Another explosion was detected at 1625 on 17 August. A grayish gas plume from an explosion at 1343 on 18 August rose 400 m, and an explosion at 1938 on 20 August ejected incandescent material onto the flanks. The Alert Level remained at Orange, the second highest level on a four-color scale. ONEMI maintained an Alert Level Yellow (the middle level on a three-color scale) for the communities of Pinto, Coihueco, and San Fabi�n, and stated that the public should stay at least 3 km away from the crater on the SW flank and 5 km away on the ENE flank.

    Sources: Oficina Nacional de Emergencia-Ministerio del Interior (ONEMI) ,Servicio Nacional de Geolog�a y Miner�a (SERNAGEOMIN)


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Updated: March 12, 2011 — 12:36 pm

The Author

Rich Fleetwood

Rich is the founder of SurvivalRing, now in it's 20th year, author of multimedia CDs and DVDs, loves the outdoors, his family, his geeky skill-set, and lives in rural Missouri, just a few miles from the Big Muddy. Always ready to help others, he shares what he learns on multiple blogs, social sites, and more. With a background in preparedness and survival skills, training with county, state, and national organizations, and skills in all areas of media and on air experience in live radio and television, Rich is always thinking about the "big picture", when it comes to helping individuals and families prepare for life's little surprises. Since 1997, he has provided guidance, authentic government survival history, and commentary on why we all need to get ready for that fateful day in the future, when we have to get our hands dirty and step in to save the day. He is an award winning videographer (2005 Telly Award), has received state and national scholarly recognition (2006 New Century Scholar and All USA Academic Team), and is a natural with computers, technology, gadgets, small furry mammals, and anything on wheels. Rich likes making friends, solving problems, and creating solutions to everyday issues. He doesn't mind mixing things up, when there is a teaching moment ready to happen. As a constitutional conservative, he's staying quite busy these days. The SurvivalRing Radio Show at www.survivalringradio.com will be coming back SOON!

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