Smithsonian / USGS Weekly Volcanic Activity Report

















 Activity for the week of 10 August-16 August 2016


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. Updated by 2300 UTC every Wednesday, notices of volcanic activity posted on these pages are preliminary and subject to change as events are studied in more detail. This is not a comprehensive list of all of Earth's volcanoes erupting during the week, but rather a summary of activity at volcanoes that meet criteria discussed in detail in the "Criteria and Disclaimers" section. Carefully reviewed, detailed reports on various volcanoes are published monthly in the Bulletin of the Global Volcanism Network.

Name Location Activity
Chikurachki Paramushir Island (Russia) New
Chirpoi Kuril Islands (Russia) New

Aira Kyushu (Japan) Ongoing
Alaid Kuril Islands (Russia) Ongoing
Colima Mexico Ongoing
Dukono Halmahera (Indonesia) Ongoing
Fuego Guatemala Ongoing
Kilauea Hawaiian Islands (USA) Ongoing
Klyuchevskoy Central Kamchatka (Russia) Ongoing
Masaya Nicaragua Ongoing
Popocatepetl Mexico Ongoing
Ruapehu North Island (New Zealand) Ongoing
Santa Maria Guatemala Ongoing
Sheveluch Central Kamchatka (Russia) Ongoing
Sinabung Indonesia Ongoing
Suwanosejima Ryukyu Islands (Japan) Ongoing
Tengger Caldera Eastern Java (Indonesia) Ongoing


New Activity/Unrest


Volcano index photo  Chikurachki  | Paramushir Island (Russia)  | 50.324°N, 155.461°E  | Elevation 1781 m

KVERT reported that no activity was observed after an eruption at Chikurachki during 27-28 July; the Aviation Color Code was lowered to Yellow (the second lowest level on a four-color scale) on 31 July and then to Green (the lowest level) on 4 August.

Source: Kamchatkan Volcanic Eruption Response Team (KVERT)



Volcano index photo  Chirpoi  | Kuril Islands (Russia)  | 46.525°N, 150.875°E  | Elevation 742 m

SVERT reported that a thermal anomaly over Snow, a volcano of Chirpoi, was detected in satellite images on 10 August. The Aviation Color Code remained at Yellow.

Source: Sakhalin Volcanic Eruption Response Team (SVERT)



Ongoing Activity


Volcano index photo  Aira  | Kyushu (Japan)  | 31.593°N, 130.657°E  | Elevation 1117 m

JMA reported that during 10-13 and 15 August small-scale explosions occurred at Minamidake summit crater (at Aira Caldera’s Sakurajima volcano). The Alert Level remained at 3 (on a 5-level scale).

Source: Japan Meteorological Agency (JMA)



Volcano index photo  Alaid  | Kuril Islands (Russia)  | 50.861°N, 155.565°E  | Elevation 2285 m

KVERT reported that moderate activity at Alaid’s summit crater was detected during 5-12 August. Satellite images showed a weak thermal anomaly at the volcano during 6-7 and 11 August. The Aviation Color Code was lowered to Yellow (the second lowest level on a four-color scale).

Source: Kamchatkan Volcanic Eruption Response Team (KVERT)



Volcano index photo  Colima  | Mexico  | 19.514°N, 103.62°W  | Elevation 3850 m

Based on satellite and webcam images, the Washington VAAC reported that on 12, 14, and 16 August ash plumes from Colima rose to altitudes of 4.3-5.5 km (14,000-18,000 ft) a.s.l. and drifted NW and W.

Source: Washington Volcanic Ash Advisory Center (VAAC)



Volcano index photo  Dukono  | Halmahera (Indonesia)  | 1.693°N, 127.894°E  | Elevation 1229 m

Based on ground reports from PVMBG, satellite data, and model data, the Darwin VAAC reported that during 10-16 August ash plumes from Dukono rose to altitudes of 2.1-3 km (7,000-10,000 ft) a.s.l. and drifted possibly as far as 270 km E, NE, and N.

Source: Darwin Volcanic Ash Advisory Centre (VAAC)



Volcano index photo  Fuego  | Guatemala  | 14.473°N, 90.88°W  | Elevation 3763 m

INSIVUMEH reported that during 13-16 August explosions at Fuego generated ash plumes that rose as high as 1.1 km and drifted 10-12 km W, SW, and SE. Some explosions also ejected incandescent material as high as 150 m that then caused minor avalanches within the crater. Ashfall was reported in Morelia (9 km SW), Santa Sofía (12 km SW), Los Yucales (12 km SW), El Porvenir (8 km ENE), Los Chucales, and Panimaché I and II (8 km SW).

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



Volcano index photo  Kilauea  | Hawaiian Islands (USA)  | 19.421°N, 155.287°W  | Elevation 1222 m

During 10-16 August HVO reported that the lava lake continued to rise and fall, circulate, and spatter in Kilauea’s Overlook vent. Several incandescent vents on Pu’u ‘O’o Crater’s floor were evident in webcam images. The 61G lava flow, originating from a vent on Pu’u ‘O’o Crater’s E flank, continued to enter the ocean at multiple areas near Kamokuna. Scattered breakouts were active on the coastal plain and the pali. A small delta collapse during the afternoon of 9 August temporarily darkened the ocean-entry plume.

Source: US Geological Survey Hawaiian Volcano Observatory (HVO)



Volcano index photo  Klyuchevskoy  | Central Kamchatka (Russia)  | 56.056°N, 160.642°E  | Elevation 4754 m

KVERT reported that a Strombolian eruption at Klyuchevskoy continued during 5-12 August. Volcanic bombs that were ejected above the summit crater and the cinder cone landed in the Apakhonchich drainage on the SE flank. A lava flow traveled down the Apakhonchich drainage. Satellite images showed a large and intense daily thermal anomaly at the volcano, and ash plumes drifting about 370 km SE and W during 9 and 11 August. The Aviation Color Code remained at Orange.

Source: Kamchatkan Volcanic Eruption Response Team (KVERT)



Volcano index photo  Masaya  | Nicaragua  | 11.984°N, 86.161°W  | Elevation 635 m

Based on analysis of satellite imagery, the Washington VAAC reported that on 15 August a possible ash plume from Masaya rose to an altitude of 1.8 km (6,000 ft) a.s.l. and drifted NW. Elevated seismicity and a thermal anomaly detected in satellite images indicated increased activity. In a report posted later that day the Washington VAAC noted that the webcam recorded minor ash emissions.

Source: Washington Volcanic Ash Advisory Center (VAAC)



Volcano index photo  Popocatepetl  | Mexico  | 19.023°N, 98.622°W  | Elevation 5426 m

Each day during 10-16 August CENAPRED reported 35-133 emissions from Popocatépetl, some of which contained minor amounts of ash, and as many as four explosions. Cloud cover sometimes prevented observations, though gas-and-steam plumes were visible almost daily. Crater incandescence was visible at night. On 11 August there were six landslides detected by the seismic network; the largest one occurred on the NW flank at 0853 and had a volume of 440 m3, and the second largest one, on the N flank, occurred at 1756 and had a volume of 220 m3. An explosion on 12 August generated an ash plume that rose 2.5 km above the crater and drifted WNW, causing ashfall in Ozumba (18 km W) and Atlautla (16 km W). An explosion at 0034 on 13 August ejected incandescent material onto the flanks. Two more explosions that day and one on 14 August produced plumes with low ash content that rose as high as 1 km. The Alert Level remained at Yellow, Phase Two.

Source: Centro Nacional de Prevencion de Desastres (CENAPRED)



Volcano index photo  Ruapehu  | North Island (New Zealand)  | 39.28°S, 175.57°E  | Elevation 2797 m

GeoNet reported that the temperature of Ruapehu’s summit Crater Lake had been declining since May. During an overflight on 10 August scientists recorded gas emissions at typical low background levels. The next day the lake water temperature was 12.6ºC, one of the lowest temperatures since the 1995/1996 eruptions. The lake was a dark green, overflowing, and sulfur slicks outlined areas of upwelling. A strong sulfur odor was noted near the lake. The level of volcanic tremor which was at moderate levels during May-June had declined to typical background levels. The Volcanic Alert Level was lowered to 1 (minor volcanic unrest) and the Aviation Colour Code was lowered to Green.

Source: GeoNet



Volcano index photo  Santa Maria  | Guatemala  | 14.756°N, 91.552°W  | Elevation 3772 m

In a special report, INSIVUMEH stated that a strong explosion at Caliente cone, part of Santa María’s Santiaguito lava-dome complex, occurred at 0629 on 14 August and generated pyroclastic flows that descended the E flank. An ash plume rose about 1.3 km above the complex and drifted S and SW, causing ashfall in San Felipe (15 km SSW), Mazatenango, and Retalhuleu (27 km SW). A moderate explosion on 15 August generated an ash plume that rose 900 m and drifted E. A loud explosion at 0658 on 16 August produced a mushroom-shaped ash cloud that rose 2.5 km and drifted W and SW. Pyroclastic flows traveled 2 km down the San Isidro and Nimá II drainages. Ash fell in San Marcos (10 km SW), Loma Linda (6 km WSW), Palajunoj (18 km SSW), and possibly in multiple fincas including El Faro, La Florida (5 km S), Patzulin (SW flank), and El Patrocinio.

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



Volcano index photo  Sheveluch  | Central Kamchatka (Russia)  | 56.653°N, 161.36°E  | Elevation 3283 m

KVERT reported that during 5-12 August lava-dome extrusion onto Sheveluch’s N flank was accompanied by strong fumarolic activity, dome incandescence, ash explosions, and hot avalanches. Satellite images showed a daily thermal anomaly over the dome. The Aviation Color Code remained at Orange.

Source: Kamchatkan Volcanic Eruption Response Team (KVERT)



Volcano index photo  Sinabung  | Indonesia  | 3.17°N, 98.392°E  | Elevation 2460 m

Based on satellite images, model data, ground reports from PVMBG, and the Jakarta MWO, the Darwin VAAC reported that on 15 August ash plumes from Sinabung rose to an altitude of 4.3 km (14,000 ft) a.s.l. and drifted E.

Source: Darwin Volcanic Ash Advisory Centre (VAAC)



Volcano index photo  Suwanosejima  | Ryukyu Islands (Japan)  | 29.638°N, 129.714°E  | Elevation 796 m

Based on JMA notices and satellite-image analyses, the Tokyo VAAC reported that during 11-12 and 14 August ash plumes from Suwanosejima rose to altitudes of 1.8-2.7 km (6,000-9,000 ft) a.s.l. and drifted W and NW.

Source: Tokyo Volcanic Ash Advisory Center (VAAC)



Volcano index photo  Tengger Caldera  | Eastern Java (Indonesia)  | 7.942°S, 112.95°E  | Elevation 2329 m

Based on analyses of satellite images, the Darwin VAAC reported that on 10 August minor gas-and-steam emissions from Tengger Caldera’s Bromo cone remained localized within the caldera.

Source: Darwin Volcanic Ash Advisory Centre (VAAC)



Weekly Reports Archive


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Chaiten Karkar Okmok Tambora
Chiginagak Karthala Ontakesan Tanaga
Chikurachki Karymsky Pacaya Tandikat-Singgalang
Chiles-Cerro Negro Kasatochi Pagan Tangkoko-Duasudara
Chillán, Nevados de Katla Palena Volcanic Group Tangkubanparahu
Chirinkotan Katmai Paluweh Tara, Batu
Chirpoi Kavachi Panarea Telica
Cleveland Kelimutu Papandayan Tenerife
Colima Kelut Parker Tengger Caldera
Colo Kerinci Pavlof Three Sisters
Concepcion Ketoi Peuet Sague Tinakula
Copahue Kharimkotan Pinatubo Tofua
Cotopaxi Kick 'em Jenny Planchon-Peteroa Tokachidake
Cumbal Kikai Poas Tolbachik
Dabbahu Kilauea Popocatepetl Toliman
Dempo Kirishimayama Puyehue-Cordon Caulle Tongariro
Descabezado Grande Kizimen Rabaul Tungurahua
Dieng Volcanic Complex Klyuchevskoy Ranakah Turrialba
Dukono Kolokol Group Raoul Island Ubinas
Ebeko Korovin Rasshua Ulawun
Ebulobo Koryaksky Raung Veniaminof
Egon Krakatau Redoubt Villarrica
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Etorofu-Yakeyama [Grozny Group] Lamongan Ruang Zavodovski
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Fernandina Lascar Ruiz, Nevado del Zubair Group
Fogo Lengai, Ol Doinyo Sabancaya
Fonualei Leroboleng Sakar
Fournaise, Piton de la Lewotobi Salak
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 News Feeds and Google Placemarks




The RSS (Really Simple Syndication) feed is identical to the Weekly Volcanic Activity Report minus some features including the header information (latitude and longitude and summit elevation), the Geologic Summary, and a link to the volcano's page from the Global Volcanism Program. Each volcano report includes a link from the volcano's name back to the more complete information in the Weekly Volcanic Activity Report on the Smithsonian website.




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A Google Earth network link for the Weekly Volcanic Activity Report can be loaded into the free Google Earth software, and in turn will load placemarks for volcanoes in the current weekly report. Placemark balloons include the volcano name, report date, report text, sources, and links back to the GVP volcano page for that volcano and to the complete Weekly Report for that week.

 Criteria & Disclaimers


Criteria

The Weekly Volcanic Activity Report does not necessarily include all volcanic activity that occurred on Earth during the week. More than a dozen volcanoes globally have displayed more-or-less continuous eruptive activity for decades or longer, and such routine activity is typically not reported here. Moreover, Earth's sea-floor volcanism is seldom reported even though in theory it represents the single most prolific source of erupted material. The Weekly Volcanic Activity Report summarizes volcanic activity that meets one or more of the following criteria:

- A volcano observatory raises or lowers the alert level at the volcano.
- A volcanic ash advisory has been released by a volcanic ash advisory center (VAAC) stating that an ash cloud has been produced from the volcano.
- A verifiable news report of new activity or a change in activity at the volcano has been issued.
- Observers have reported a significant change in volcanic activity. Such activity can include, but is not restricted to, pyroclastic flows, lahars, lava flows, dome collapse, or increased unrest.

Volcanoes are included in the "New Activity/Unrest" section of the Weekly Volcanic Activity Report if the activity occurs after at least 3 months of quiescence. Once a volcano is included in the "New Activity/Unrest" section, updates will remain in that section unless the activity continues for more than 1 month without escalating, after which time updates will be listed in the "Continuing Activity" section. Volcanoes are also included in the "New Activity/Unrest" section if the volcano is undergoing a period of relatively high unrest, or increasing unrest. This is commonly equal to Alert Level Orange on a scale of Green, Yellow, Orange, Red, where Red is the highest alert. Or alert level 3 on a scale of 1-4 or 1-5.

It is important to note that volcanic activity meeting one or more of these criteria may occur during the week, but may not be included in the Weekly Volcanic Activity Report because we did not receive a report.


Disclaimers

1. The Weekly Volcanic Activity Report is intended to provide timely information about global volcanism on a weekly basis. Consequently, the report is generated rapidly by summarizing volcanic reports from various sources, with little time for fact checking. The accuracy of the Weekly Volcanic Activity Report is dependent upon the quality of the volcanic activity reports we receive. Reports published in the Bulletin of the Global Volcanism Network are monthly, and more carefully reviewed, although all of the volcanoes discussed in the Weekly Volcanic Activity Report are not necessarily reported in the Bulletin. Because of our emphasis on rapid reporting on the web we have avoided diacritical marks. Reports are updated on the Weekly Volcanic Activity Report web page as they are received, therefore information may be included regarding events that occurred before the current report period.

2. Rapidly developing events lead to coverage that is often fragmentary. Volcanoes, their eruptions, and their plumes and associated atmospheric effects are complex phenomena that may require months to years of data analysis in order to create a comprehensive summary and interpretation of events.

3. Preliminary accounts sometimes contain exaggerations and "false alarms," and accordingly, this report may include some events ultimately found to be erroneous or misleading.

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RSS and CAP Feeds

An RSS (Really Simple Syndication) feed for the Weekly Volcanic Activity Report first made available on 5 March 2008 can be utilized with the aid of various free downloadable readers. The report content of the news feed is identical to the Weekly Volcanic Activity Report minus some features including the header information (latitude and longitude and summit elevation), the Geologic Summary, and a link to the volcano's page from the Global Volcanism Program. Each volcano report includes a link from the volcano's name back to the more complete information in the Weekly Volcanic Activity Report on the Smithsonian website. On 12 March 2009, GeoRSS tags were added so that the latitude and longitude for each volcano could be included with the feed.

At the end of each individual report is a list of the sources used. We would like to emphasize that the World Organization of Volcano Observatories (WOVO) website (http://www.wovo.org/) lists the regional volcano observatories that have the most authoritative data for many of these events.

CAP (Common Alerting Protocol) feeds are XML files specifically formatted for disaster management.


Google Earth Placemarks

A Google Earth network link for the Weekly Volcanic Activity Report was first made available on 1 April 2009. This file can be loaded into the free Google Earth software, and in turn will load placemarks for volcanoes in the current weekly report. Placemark balloons include the volcano name, report date, report text, sources, and links back to the GVP volcano page for that volcano and to the complete Weekly Report for that week.

 Acronyms and Abbreviations


a.s.l. - above sea level

AVO - Alaska Volcano Observatory

AVHRR - Advanced Very High Resolution Radiometer

CENAPRED - Centro Nacionale de Prevencion de Desastres (México)

CONRED - Coordinadora Nacional para la Reducción de Desastres

COSPEC - Correlation Spectrometer

CVGHM (formerly VSI) - Center of Volcanology and Geological Hazard Mitigation

CVO - Cascades Volcano Observatory (USGS)

GMS - Geostationary Meteorological Satellite

GOES - Geostationary Operational Environmental Satellite

GVO - Goma Volcano Observatory

GVP - Global Volcanism Program (Smithsonian Institution)

HVO - Hawaiian Volcano Observatory (USGS)

ICE - Instituto Costarricense de Electricidad (Costa Rica)

IG - Instituto Geofísico (Ecuador)

IGNS - Institute of Geological and Nuclear Sciences (New Zealand)

INETER - Instituto Nicaragüense de Estudios Territoriales (Nicaragua)

INGEMMET - Instituto Geológical Minero y Metalúrgico (Peru)

INGEOMINAS - Instituto Colombiano de Geología y Minería (Colombia)

INGV-CT - Istituto Nazionale di Geofisica e Vulcanologia - Sezione di Catania (Italy)

INSIVUMEH - Instituto Nacional de Sismologia, Vulcanologia, Meteorologia e Hidrologia (Guatemala)

IRD - Institut de Recherche pour le Développement (France)

JMA - Japanese Meteorological Agency

KEMSD - Kamchatkan Experimental and Methodical Seismilogical Department

KVERT - Kamchatkan Volcanic Eruption Response Team

M - magnitude

METEOSAT - Meteorological Satellite

MEVO - Mount Erebus Volcano Observatory

MODIS - Moderate Resolution Imaging Spectroradiometer

MVO - Montserrat Volcano Observatory

MWO - Meteorological Watch Office

NEIC - National Earthquake Information Center

NIED - National Research Institute for Earth Science and Disaster Prevention (Japan)

NOAA - National Oceanic and Atmospheric Administration

NOTAM - Notice to Airmen

OVDAS - Observatorio Volcanológico de los Andes del Sur (Chile)

OFDA - Office of US Foreign Disaster Assistance

ONEMI - Oficina Nacional de Emergencia - Ministerio del Interior (Chile)

OVPDLF - Observatoire Volcanologique du Piton de la Fournaise (France)

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

PHIVOLCS - Philippine Institute of Volcanology and Seismology

RSAM - Real-time Seismic Amplitude Measurement

RVO - Rabaul Volcano Observatory

SERNAGEOMIN - Servicio Nacional de Geología y Minería (Chile)

SIGMET - Significant Meteorological Information

SNET - Servicio Nacional de Estudios Territoriales (El Salvador)

SVERT - Sakhalin Volcanic Eruption Response Team (Kurile Islands)

USAID - US Agency for International Development

USGS - United States Geological Survey

UTC - Coordinated Universal Time

VAAC - Volcanic Ash Advisory Center

VAFTAD - Volcanic Ash Forecast Transport And Dispersion

VDAP - Volcano Disaster Assistance Program (USGS)

VHP - Volcano Hazards Program (USGS)

VRC - Volcano Research Center (Japan)