Weekly Volcanic Report

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Rich

SI / USGS Weekly Volcanic Activity Report

  • Wed, 08 Jul 2020 01:07:56 -0600: Karymsky (Russia) - Report for 1 July-7 July 2020 - Smithsonian / USGS Weekly Volcanic Activity Report

    KVERT reported that a bright thermal anomaly over Karymsky was identified in satellite images during 26-30 June. The Aviation Color Code remained at Orange (the second highest level on a four-color scale).

    Source: Kamchatkan Volcanic Eruption Response Team (KVERT)

  • Wed, 08 Jul 2020 01:07:56 -0600: Laguna del Maule (Chile) - Report for 1 July-7 July 2020 - NEW - Smithsonian / USGS Weekly Volcanic Activity Report

    SERNAGEOMIN reported that, although the number and magnitude of earthquakes had decreased during 20-30 June, seismicity at the Laguna del Maule Volcanic Complex continued to remain anomalously elevated at east through 7 July. The location of the activity remained within an area about 5 km in diameter, near the intersection of two faults near Las Nieblas, and corresponded to elevated levels of carbon dioxide emissions. The Alert Level remained at Yellow, the second lowest color on a four-color scale; ONEMI recommended restricted access within a radius of 2 km from the emission center.

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

  • Wed, 08 Jul 2020 01:07:56 -0600: Dukono (Indonesia) - Report for 1 July-7 July 2020 - Smithsonian / USGS Weekly Volcanic Activity Report

    Based on information from PVMBG and the Darwin VAAC dense white-and-gray ash plumes from Dukono rose as high as 2.4 km (8,000 ft) a.s.l. and drifted NW, W, and SW almost daily during 1-7 July. The Alert Level remained at a 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, 08 Jul 2020 01:07:56 -0600: Pacaya (Guatemala) - Report for 1 July-7 July 2020 - Smithsonian / USGS Weekly Volcanic Activity Report

    INSIVUMEH reported that during 1-7 July Strombolian explosions at Pacaya?s Mackenney Crater ejected material as high as 100 m above the crater rim; explosions were audible as far away as 5 km during 4-5 July. Lava flows 150-500 m long were active on the N, NW, and SW flanks.

    Source: Instituto Nacional de Sismologia, Vulcanologia, Meteorologia, e Hidrologia (INSIVUMEH)

  • Wed, 08 Jul 2020 01:07:56 -0600: Copahue (Chile-Argentina) - Report for 1 July-7 July 2020 - Smithsonian / USGS Weekly Volcanic Activity Report

    SERNAGEOMIN reported that conditions at Copahue had returned to normal levels and seismicity was low. The Alert Level was lowered to Green (second lowest level on a four-color scale) on 7 July.

    Source: Servicio Nacional de Geolog�a y Miner�a (SERNAGEOMIN)

  • Wed, 08 Jul 2020 01:07:56 -0600: Nishinoshima (Japan) - Report for 1 July-7 July 2020 - NEW - Smithsonian / USGS Weekly Volcanic Activity Report

    JMA reported that the eruption at Nishinoshima had been particularly vigorous since mid-June, producing a large amount of ash. Based on satellite data, the Tokyo VAAC reported that during 1-3 and 5-7 July ash plumes rose to 2.7-4.9 km (9,000-16,000 ft) a.s.l. and drifted N and NW, and sometimes SW. On 4 July, ash plumes rose to 8.3 km above the summit (or to 24,000-28,000 ft. a.s.l.), the highest recorded plume since the volcano became active in 2013.

    Sources: Japan Meteorological Agency (JMA) ,Tokyo Volcanic Ash Advisory Center (VAAC)

  • Wed, 08 Jul 2020 01:07:56 -0600: Ebeko (Russia) - Report for 1 July-7 July 2020 - Smithsonian / USGS Weekly Volcanic Activity Report

    Volcanologists in Severo-Kurilsk (Paramushir Island), about 7 km E of Ebeko, observed explosions during 26 June-3 July that sent ash plumes up to 4 km (13,123 ft) a.s.l. which drifted S and E. A thermal anomaly over the volcano was identified in satellite images during 26-28 and 30 June. The Aviation Color Code remained at Orange (the second highest level on a four-color scale).

    Source: Kamchatkan Volcanic Eruption Response Team (KVERT)

  • Wed, 08 Jul 2020 01:07:56 -0600: Klyuchevskoy (Russia) - Report for 1 July-7 July 2020 - Smithsonian / USGS Weekly Volcanic Activity Report

    KVERT reported that Strombolian activity at Klyuchevskoy was visible during 26 June-3 July along with a bright thermal anomaly identified in satellite images. A lava flow continued to advance down the Apakhonchich drainage on the SE flank. Avalanches of material on the S side of the lava flow were sometimes visible. Aviation Color Code remained at Orange.

    Source: Kamchatkan Volcanic Eruption Response Team (KVERT)

  • Wed, 08 Jul 2020 01:07:56 -0600: Sheveluch (Russia) - Report for 1 July-7 July 2020 - Smithsonian / USGS Weekly Volcanic Activity Report

    KVERT reported that a thermal anomaly over Sheveluch was identified in satellite images during 26 June-3 July. A plume of re-suspended ash drifted 140 km E on 28 June. The Aviation Color Code remained at Orange (the second highest level on a four-color scale).

    Source: Kamchatkan Volcanic Eruption Response Team (KVERT)

  • Wed, 08 Jul 2020 01:07:56 -0600: Turrialba (Costa Rica) - Report for 1 July-7 July 2020 - NEW - Smithsonian / USGS Weekly Volcanic Activity Report

    OVSICORI-UNA reported that small ash emissions rose to low heights above the active crater at Turrialba almost daily during 1-7 July; no emissions were recorded on 3 July. A plume of gas and ash rose hundreds of meters at 0900 on 6 July, causing local ashfall.

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

  • Wed, 08 Jul 2020 01:07:56 -0600: Nevados de Chillan (Chile) - Report for 1 July-7 July 2020 - Smithsonian / USGS Weekly Volcanic Activity Report

    SERNAGEOMIN reported that lava began breaching the rim of Nevados de Chill�n?s Nicanor Crater around 27 June and had flowed 40 m down the N flank by 1 July. An explosion at 0837 on 6 July generated a gas-and-ash plume that rose 1.2 km above the crater rim and drifted SE. The Alert Level remained at Yellow, the second lowest level on a four-color scale, and residents were reminded not to approach the crater within 3 km. ONEMI stated that Alert Level Yellow (the middle level on a three-color scale) remained in place for the communities of Pinto and Coihueco, noting that as of 16 June the public should stay at least 3 km away from the crater on the SW flank and 5 km away on the NE flank.

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

  • Wed, 08 Jul 2020 01:07:56 -0600: Sangay (Ecuador) - Report for 1 July-7 July 2020 - Smithsonian / USGS Weekly Volcanic Activity Report

    On 2 July IG presented additional results from the Sangay overflight that was conducted on 24 June with the purpose of performing maintenance on a gas and seismic station, taking visual and infrared photos of the surficial activity, and measuring volcanic gases. Three thermal anomalies were identified: the first was in the summit crater and associated with explosions, the second was near the SE rim of the summit crater and possibly highlighted a small lava flow, and the third corresponded to the accumulation of hot deposits of pyroclastic flows at the lower part of the SE drainage. Ash from summit explosions and pyroclastic flows that descended the SE flank dispersed mainly S and W. Notable morphological changes to the summit areas were evident when comparing photographs from 17 May 2019 to 24 June 2020. The maximum width of the SE flank drainage was an estimated 397 m. Due to a large amount of airborne ash in the N, E, and S parts of the volcano, the SAGA station on the SW flank could not be reached and repaired. Winds caused ashfall in populated areas. Gas emission data could also not be obtained due to the amount of airborne ash.

    Source: Instituto Geof�sico-Escuela Polit�cnica Nacional (IG)

  • Wed, 08 Jul 2020 01:07:56 -0600: Sabancaya (Peru) - Report for 1 July-7 July 2020 - Smithsonian / USGS Weekly Volcanic Activity Report

    Instituto Geol�gico Minero y Metal�rgico (INGEMMET) reported that drone footage acquired at Sabancaya on 20 June showed that the lava dome in the main crater had been destroyed, leaving blocks on the crater floor. Explosions at fractured areas generated gas-and-ash plumes. During 23-24 June explosions produced gas-and-ash plumes that rose as high as 1.8 km above the summit and drifted E and SE. Ashfall was reported in areas downwind including in the districts of Chivay, Achoma, Ichupampa, Yanque, and Coporaque, and in the area of Sallali. Instituto Geof�sico del Per� (IGP) reported a daily average of 20 explosions during 29 June-5 July. Gas-and-ash plumes rose as high as 3.5 km above the summit and drifted S, SE, NE, and N. There were seven thermal anomalies over the crater identified in satellite data. The Alert Level remained at Orange (the second highest level on a four-color scale) and the public were warned to stay outside of a 12-km radius.

    Sources: Instituto Geof�sico del Per� (IGP),Instituto Geol�gico Minero y Metal�rgico (INGEMMET)

  • Wed, 08 Jul 2020 01:07:56 -0600: Aira (Japan) - Report for 1 July-7 July 2020 - Smithsonian / USGS Weekly Volcanic Activity Report

    JMA reported very small eruptive events at Minamidake Crater (at Aira Caldera?s Sakurajima volcano) during 29 June-3 July; inclement weather prevented visual observations during 4-6 July. The sulfur dioxide emission rate was 1,300 tons per day on 2 July. The Alert Level remained at 3 (on a 5-level scale).

    Source: Japan Meteorological Agency (JMA)

  • Wed, 08 Jul 2020 01:07:56 -0600: Semeru (Indonesia) - Report for 1 July-7 July 2020 - Smithsonian / USGS Weekly Volcanic Activity Report

    PVMBG reported that at 0633 on 7 July an ash plume from Semeru rose 400 m above the summit and drifted W. Weather clouds had prevented visual observations of the volcano during the previous six days. The Alert Level remained at 2 (on a scale of 1-4), and the public was reminded to stay outside of the general restricted area 1 km from the summit and 4 km on the SSE flank.

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


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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.

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