Weekly Volcanic Report

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SI / USGS Weekly Volcanic Activity Report

  • Tue, 14 Jan 2020 23:44:58 -0700: Klyuchevskoy (Russia) - Report for 8 January-14 January 2020 - Smithsonian / USGS Weekly Volcanic Activity Report

    KVERT reported that a weak thermal anomaly over Klyuchevskoy was identified in satellite images during 3-10 January. Strombolian activity was visible all week and Vulcanian explosions were noted on 6 January. Ash plumes drifted 55 km ENE. The Aviation Color Code remained at Orange.

    Source: Kamchatkan Volcanic Eruption Response Team (KVERT)

  • Tue, 14 Jan 2020 23:44:58 -0700: Krakatau (Indonesia) - Report for 8 January-14 January 2020 - NEW - Smithsonian / USGS Weekly Volcanic Activity Report

    PVMBG reported that during 6-12 January dense white gas plumes rose 50-200 m above the bottom of Anak Krakatau?s crater. An eruptive event on 7 January produced a dense ash plume that rose 200. The Alert Level remained at 2 (on a scale of 1-4), and the public was warned to remain outside of the 2-km-radius hazard zone from the crater.

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

  • Tue, 14 Jan 2020 23:44:58 -0700: Ebeko (Russia) - Report for 8 January-14 January 2020 - Smithsonian / USGS Weekly Volcanic Activity Report

    Volcanologists in Severo-Kurilsk (Paramushir Island), about 7 km E of Ebeko, observed explosions during 3, 5, and 9 January that sent ash plumes up to 2.9 km (9,500 ft) a.s.l. Ash plumes drifted NE and SE, and caused ashfall in Severo-Kurilsk on 8 January. The Aviation Color Code remained at Orange (the second highest level on a four-color scale).

    Source: Kamchatkan Volcanic Eruption Response Team (KVERT)

  • Tue, 14 Jan 2020 23:44:58 -0700: Sangay (Ecuador) - Report for 8 January-14 January 2020 - Smithsonian / USGS Weekly Volcanic Activity Report

    Based on information from the Guayaquil MWO, satellite and webcam images, and wind model data, the Washington VAAC reported that during 1-11 January ash plumes from Sangay rose to 5.2-6.7 km (17,000-22,000 ft) a.s.l. and drifted in multiple directions. Crater incandescence was identified in satellite images during 9-10 January.

    Source: Washington Volcanic Ash Advisory Center (VAAC)

  • Tue, 14 Jan 2020 23:44:58 -0700: Dukono (Indonesia) - Report for 8 January-14 January 2020 - Smithsonian / USGS Weekly Volcanic Activity Report

    Based on satellite and wind model data, the Darwin VAAC reported that on 9 January ash plumes from Dukono rose to 1.8 km (6,000 ft) a.s.l. and drifted NW. On 13 January ash plumes rose to 2.1 km (7,000 ft) a.s.l. and drifted 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)

  • Tue, 14 Jan 2020 23:44:58 -0700: Kuchinoerabujima (Japan) - Report for 8 January-14 January 2020 - NEW - Smithsonian / USGS Weekly Volcanic Activity Report

    An eruption at Kuchinoerabujima began at 1505 on 11 January and produced ash plumes that rose 2 km above the crater rim, drifted E, and then faded into a weather cloud. Tephra was ejected 300 m from the crater, and ashfall was reported on neighboring Yakushima Island. The eruption continued until 0730 on 12 January, producing ash plumes that rose 400 m above the crater rim and drifted SW; afterwards only white plumes were visible rising 600 m. The Alert Level remained at 3 (the middle level on a scale of 1-5).

    Source: Japan Meteorological Agency (JMA)

  • Tue, 14 Jan 2020 23:44:58 -0700: Karangetang (Indonesia) - Report for 8 January-14 January 2020 - Smithsonian / USGS Weekly Volcanic Activity Report

    PVMBG reported that during 6-12 January lava continued to effuse from Karangetang?s Main Crater (S), traveling as far as 1.8 km down the Nanitu, Pangi, and Sense drainages on the SW and W flanks. Sometimes dense white plumes rose 100-400 m above the summit. Incandescence from both summit craters was visible at night. The Alert Level remained at 2 (on a scale of 1-4).

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

  • Tue, 14 Jan 2020 23:44:58 -0700: Popocatepetl (Mexico) - Report for 8 January-14 January 2020 - Smithsonian / USGS Weekly Volcanic Activity Report

    CENAPRED reported that each day during 8-14 January there were 76-268 steam-and-gas emissions from Popocat�petl, some of which contained ash (during 8-9 December). An explosion at 0631 on 9 January produced an ash plume that rose 3 km above the crater rim and drifted NE. The event also ejected incandescent material onto the flanks as far away as 1 km from the crater. The Alert Level remained at Yellow, Phase Two (middle level on a three-color scale).

    Source: Centro Nacional de Prevencion de Desastres (CENAPRED)

  • Tue, 14 Jan 2020 23:44:58 -0700: Suwanosejima (Japan) - Report for 8 January-14 January 2020 - Smithsonian / USGS Weekly Volcanic Activity Report

    JMA recorded 13 explosions at Suwanosejima?s Ontake Crater during 3-10 January. Eruption plumes rose as high as 1.4 km above the crater rim and material was ejected as far as 600 m from the crater. Explosion and rumbling sounds, as well as ashfall, were reported in areas 4 km SSW. Crater incandescence was visible at night. The Alert Level remained at 2 (on a 5-level scale).

    Source: Japan Meteorological Agency (JMA)

  • Tue, 14 Jan 2020 23:44:58 -0700: Taal (Philippines) - Report for 8 January-14 January 2020 - NEW - Smithsonian / USGS Weekly Volcanic Activity Report

    PHIVOLCS reported that seismicity at Taal began to increase on 28 March 2019 and fluctuated between moderate and high levels throughout the year and into 2020. A seismic swarm beneath Taal began at 1100 on 12 January and a phreatic eruption commenced at 1300. The initial eruptive activity was characterized by increased steaming from at least five vents in Main Crater and phreatic explosions that generated 100-m-high plumes. PHIVOLCS raised the Alert Level to 2 (on a scale of 0-5) and reminded the public that the entire Volcano Island (the main cone of Taal) is in a Permanent Danger Zone (PDZ). Booming was heard at 1400 in Talisay, Batangas (4 km NNE, all distances are measured from the center of Main Crater lake). Activity escalated at 1404; volcanic tremor and earthquakes felt locally were accompanied by an eruption plume that rose 1 km. Ash fell in the SSW part of Taal. The Alert Level was raised to 3 and the evacuation of high-risk barangays was recommended. Activity again intensified around 1730, prompting PHIVOLCS to raise the Alert Level to 4 and recommend a total evacuation of the island and high-risk areas within a 14-km radius. The eruption plume of steam, gas, and tephra significantly intensified and rose 10-15 km (32,800-49,200 ft) a.s.l., producing frequent lightning. Wet ash fell in areas downwind, including as far N as Quezon City (75 km). According to news articles schools and government offices were ordered to close and the Ninoy Aquino International Airport (56 km N) in Manila suspended flights. About 6,000 people had been evacuated but the number was expected to rise. Residents described heavy ashfall, low visibility, and fallen trees. Ashfall was reported in a wide area; in a statement issued at 0320 on 13 January PHIVOLCS noted that ashfall was reported in Tanauan (18 km NE), Batangas; Escala (11 km NW), Tagaytay; Sta. Rosa (32 km NNW), Laguna; Dasmari�as (32 km N), Bacoor (44 km N), and Silang (22 km N), Cavite; Malolos (93 km N), San Jose Del Monte (87 km N), and Meycauayan (80 km N), Bulacan; Antipolo (68 km NNE), Rizal; Muntinlupa (43 km N), Las Pi�as (47 km N), Marikina (70 km NNE), Para�aque (51 km N), Pasig (62 km NNE), Quezon City, Mandaluyong (62 km N), San Juan (64 km N), Manila; Makati City (59 km N) and Taguig City (55 km N). Lapilli (2-64 mm in diameter) fell in Tanauan and Talisay; Tagaytay City (12 km N); Nuvali (25 km NNE) and Sta. Rosa, Laguna. Felt earthquakes (Intensities II-V) continued to be recorded in local areas. The eruption progressed to a magmatic eruption during 0249-0428 on 13 January, characterized by weak lava fountaining accompanied by thunder and flashes of lightning. Activity briefly waned then resumed with sporadic weak fountaining and explosions that generated 2-km-high, dark gray, steam-laden plumes. New lateral vents opened on the N flank, producing 500-m-tall lava fountains. Heavy ashfall impacted areas SW including in Cuenca (15 km SSW), Lemery (16 km SW), Talisay, and Taal (15 km SSW), Batangas. News articles noted that more than 300 domestic and 230 international flights were cancelled as the Manila Ninoy Aquino International Airport was closed during 12-13 January; some flights could depart in the early afternoon of 13 January. Some roads from Talisay to Lemery and Agoncillo were impassible and electricity and water services were intermittent. Ashfall in several provinces caused power outages. Authorities continued to evacuate high-risk areas within a 14-km radius of Taal; by 13 January more than 24,500 people had moved to 75 shelters out of a total number of 460,000 people within 14 km. In a bulletin posted at 0800 on 14 January PHIVOLCS noted that lava fountaining continued and steam plumes rose form Main Crater. Fissures on the N flank produced 500-m-tall lava fountains. Sulfur dioxide emissions averaged 5,299 tonnes/day on 13 January. By 1300 lava fountaining generated 800-m-tall, dark gray, steam-laden plumes that drifted SW. New ground cracks were observed in Sinisian (18 km SW), Mahabang Dahilig (14 km SW), Dayapan (15 km SW), Palanas (17 km SW), Sangalang (17 km SW), and Poblacion (19 km SW) Lemery; Pansipit (11 km SW), Agoncillo; Poblacion 1, Poblacion 2, Poblacion 3, Poblacion 5 (all around 17 km SW), Talisay, and Poblacion (11 km SW), San Nicolas. A fissure opened across the road connecting Agoncillo to Laurel, Batangas. At 0800 on 15 January PHIVOLCS stated that activity was generally weaker; dark gray, steam-laden plumes rose about 1 km and drifted SW. Since 1300 on 12 January the seismic network had recorded a total of 446 volcanic earthquakes, with 156 of those felt with Intensities of I-V. New ground cracking was reported in Sambal Ibaba (17 km SW), and portions of the Pansipit River (SW) had dried up. Satellite images showed that the Main Crater lake was gone and new craters had formed inside Main Crater and on the N flank. According to the Disaster Response Operations Monitoring and Information Center (DROMIC) there were a total of 53,832 people dispersed to 244 evacuation centers by 1800 on 15 January.

    Sources: Bloomeberg ,Disaster Response Operations Monitoring and Information Center (DROMIC),Philippine Institute of Volcanology and Seismology (PHIVOLCS) ,ReliefWeb,The National Disaster Risk Reduction and Management Council (NDRRMC)

  • Tue, 14 Jan 2020 23:44:58 -0700: Sabancaya (Peru) - Report for 8 January-14 January 2020 - Smithsonian / USGS Weekly Volcanic Activity Report

    Instituto Geof�sico del Per� (IGP) reported that an average of eight daily low- to medium-intensity explosions occurred at Sabancaya during 6-12 January. Gas-and-ash plumes rose as high as 3 km above the summit and drifted NE, E, and SE. There were six thermal anomalies identified in satellite data, originating from the 282-m-diameter lava dome in the summit crater. 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.

    Source: Instituto Geof�sico del Per� (IGP)

  • Tue, 14 Jan 2020 23:44:58 -0700: Sheveluch (Russia) - Report for 8 January-14 January 2020 - Smithsonian / USGS Weekly Volcanic Activity Report

    KVERT reported that a thermal anomaly over Sheveluch was identified in satellite images during 3-10 January. The Aviation Color Code remained at Orange (the second highest level on a four-color scale).

    Source: Kamchatkan Volcanic Eruption Response Team (KVERT)

  • Tue, 14 Jan 2020 23:44:58 -0700: Semisopochnoi (United States) - Report for 8 January-14 January 2020 - Smithsonian / USGS Weekly Volcanic Activity Report

    On 9 January AVO lowered the Aviation Color Code for Semisopochnoi to Yellow and the Volcano Alert Level to Advisory, noting that explosions had not been detected since 19 December 2019. In addition, seismic tremor had last been recorded on 29 December 2019; seismicity subsequently declined but remained above background levels.

    Source: US Geological Survey Alaska Volcano Observatory (AVO)

  • Tue, 14 Jan 2020 23:44:58 -0700: Aira (Japan) - Report for 8 January-14 January 2020 - Smithsonian / USGS Weekly Volcanic Activity Report

    JMA reported nighttime crater incandescence at Minamidake Crater (at Aira Caldera?s Sakurajima volcano) during 6-14 January. Small eruptive events were occasionally recorded by the seismic network. Explosions were recorded during 6, 10, and 12-14 January; ash plumes rose 1.8-2.3 km above the crater rim and material was ejected as far as 1.3 km away from the crater. The Alert Level remained at 3 (on a 5-level scale).

    Source: Japan Meteorological Agency (JMA)

  • Tue, 14 Jan 2020 23:44:58 -0700: Shishaldin (United States) - Report for 8 January-14 January 2020 - Smithsonian / USGS Weekly Volcanic Activity Report

    AVO summarized the 7 January eruptive activity at Shishaldin, characterizing the period of activity during 0500-1200 as the most sustained explosive activity of the eruptive sequence so far. Ash plumes drifted over 200 km ENE, were ash rich during 0900-1200, and caused several flight cancellations and minor ashfall in Cold Bay. Elevated surface temperatures continued to be identified in satellite images during 7-10 January, indicating lava effusion; seismicity decreased but remained above background levels. Satellite images acquired during 10-14 January showed weak surface temperatures, indicated cooling lava; seismicity remained above background levels.

    Source: US Geological Survey Alaska Volcano Observatory (AVO)


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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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