Activity for the week of 25 March-31 March 2015
- Info & Contacts
Activity for the week of 25 March-31 March 2015
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.
|Chirinkotan||Kuril Islands (Russia)||New|
|Bagana||Bougainville (Papua New Guinea)||Ongoing|
|Chirpoi||Kuril Islands (Russia)||Ongoing|
|Karymsky||Eastern Kamchatka (Russia)||Ongoing|
|Kilauea||Hawaiian Islands (USA)||Ongoing|
|Kuchinoerabujima||Ryukyu Islands (Japan)||Ongoing|
|Sheveluch||Central Kamchatka (Russia)||Ongoing|
|Shishaldin||Fox Islands (USA)||Ongoing|
|Zhupanovsky||Eastern Kamchatka (Russia)||Ongoing|
Chirinkotan | Kuril Islands (Russia) | 48.98°N, 153.48°E | Elevation 724 m
SVERT reported that on 27 March a thermal anomaly over Chirinkotan was detected in satellite images. Cloud cover prevented views of the volcano on the other days during 23-30 March. The Aviation Color Code remained at Yellow.
Villarrica | Chile | 39.42°S, 71.93°W | Elevation 2847 m
OVDAS-SERNAGEOMIN reported that during 24-25 March gas-and-ash emissions at Villarrica decreased but the magnitude of the continuous seismic tremor slightly increased. Crater incandescence overnight was observed. By the evening of 25 March Strombolian activity was confined to the crater and a gas plume rose 700 m above the crater rim. Seismicity fluctuated but increase overall. The lava lake had returned and was about 1,000 degrees Celsius. During 26-27 March Strombolian activity ejected tephra out of the crater to distances of about 500 m, and a gas plume rose more than 800 m. During an overflight on 27 March scientists noted that material which measured 1,110 degree Celsius originated from two vents. During 28-31 March a gas-and-ash plume rose from the crater and Strombolian explosions ejected tephra from the crater; several explosions starting at 2200 on 30 March, and continuing the next morning, ejected tephra 300 m above the crater and as far as 500 m from the crater onto the flanks. The Alert Level remained at Orange (the second highest level on a four-color scale) and the public was warned to stay outside of a 5-km radius around the crater and away from drainages.
Bagana | Bougainville (Papua New Guinea) | 6.137°S, 155.196°E | Elevation 1855 m
Based on analyses of satellite imagery and wind data, the Darwin VAAC reported that on 26 March a low-level ash plume from Bagana drifted 37 km NE. During 27-29 March ash plumes rose to an altitude of 3 km (10,000 ft) a.s.l. and drifted 55 km NE and N. On 1 April an ash plume drifted 75 km SE.
Chirpoi | Kuril Islands (Russia) | 46.525°N, 150.875°E | Elevation 742 m
SVERT reported that satellite images over Snow, a volcano of Chirpoi, detected a thermal anomaly during 26-27 March, and gas-and-steam emissions on 29 March. Cloud cover obscured views on other days during 23-30 March. The Aviation Color Code remained at Yellow.
Colima | Mexico | 19.514°N, 103.62°W | Elevation 3850 m
Based on satellite images, Mexico City MWO, Colima Observatory notices, and webcam views, the Washington VAAC reported multiple ash emissions per day from Colima during 24-30 March. Gas-and-ash plumes on 24 March drifted E and dissipated around 90 km away. During 25-30 March some ash plumes rose to altitudes of 4-7.6 km (13,000-25,000 ft) a.s.l.; ash emissions drifted 15-140 km NE, ENE, E, and SE. Ash plumes on 30 March also drifted W.
Dukono | Halmahera (Indonesia) | 1.68°N, 127.88°E | Elevation 1335 m
Based on analyses of satellite imagery and wind data, the Darwin VAAC reported that on 25 March ash plumes from Dukono drifted 35-45 km W and NE. During 29-30 March ash plumes rose to an altitude of 3 km (10,000 ft) a.s.l. and drifted over 90 km NW and W.
Karymsky | Eastern Kamchatka (Russia) | 54.049°N, 159.443°E | Elevation 1513 m
KVERT reported that during 20-27 March moderate activity at Karymsky continued. Satellite images detected ash plumes drifting 154 km E during 22 and 24-25 March, and a thermal anomaly over the volcano during 24-26 March. The Aviation Color Code remained at Orange.
Kilauea | Hawaiian Islands (USA) | 19.421°N, 155.287°W | Elevation 1222 m
During 25-31 March HVO reported that Kilauea’s 27 June NE-trending lava flow continued to be active with four separate breakouts in three areas within and along the flow-field margins. The three main areas of breakouts were the 21 February breakout on the flank of Pu'u 'O'o, the 9 March breakout near the forested cone of Kahauale'a (burning trees were visible), and a relatively small breakout 5-6 km farther NE of Pu'u 'O'o. On 25 March HVO lowered the Volcano Alert Level from Warning to Watch, noting that in recent weeks the Pu'u 'O'o lava flows nearest to the town of Pahoa were inactive. The Aviation Color Code remained at Orange. The circulating lava lake occasionally rose and fell in the deep pit within Halema'uma'u Crater. Gas emissions remained elevated.
Kuchinoerabujima | Ryukyu Islands (Japan) | 30.443°N, 130.217°E | Elevation 657 m
JMA reported that no eruptions occurred from Kuchinoerabujima during 27-30 March, although the level of activity remained elevated. White plumes rose 1 km above Shindake Crater. Continuing fumarolic actiivty in a crack in W part of the crater was confirmed during a field survey. In addition the temperature of a thermal anomaly in the W part continued to rise. Low-level seismicity continued. The Alert Level remained at 3 (on a scale of 1-5).
Popocatepetl | Mexico | 19.023°N, 98.622°W | Elevation 5426 m
At 2113 on 24 March activity at Popocatépetl increased and a four-hour series of explosions produced steam, gas, and ash emissions that rose 3 km. Incandescent tephra was ejected 800 m onto the NE and SE flanks. The last explosion in the series was detected at 0118 on 25 March. Additional explosion on 25 March ejected tephra and generated steam, gas, and ash plumes; the plumes rose 2 km and drifted NE and SE causing ashfall in Atlixco, Puebla. During 26-31 March the seismic network recorded between 21 and 86 emissions per day that sometimes contained ash. Cloud cover often prevented observations of the crater, although ash plumes and nighttime crater incandescence were noted. Continuous steam, gas, and ash emissions on 26 March rose 600 m and drifted ENE. On 29 March at 0944 an ash plume rose 2 km. On 31 March one of three explosions, which occurred at 0740, generated an ash plume that rose less than 1 km and drifted SW. The Alert Level remained at Yellow, Phase Two.
Sheveluch | Central Kamchatka (Russia) | 56.653°N, 161.36°E | Elevation 3283 m
KVERT reported that during 20-27 March lava-dome extrusion onto Sheveluch’s N flank was accompanied by incandescence, hot block avalanches, and fumarolic activity. Strong explosions on 20, 22, and 25 March generated ash plumes that rose to altitudes of 7-10 km (23,000-32,800 ft) a.s.l. Ash plumes visible in satellite images drifted more than 600 km N, E, and SE during 20-22 and 25-26 March. A daily thermal anomaly was also visible in satellite images. The Aviation Color Code remained at Orange.
Shishaldin | Fox Islands (USA) | 54.756°N, 163.97°W | Elevation 2857 m
AVO reported that seismicity at Shishaldin continued to be elevated over background levels during 25-31 March, indicating that low-level eruptive activity confined to the summit crater likely continued. Nothing significant was observed in partly-to-mostly cloudy satellite and web camera images. Vigorous steaming at the summit was visible during 28 and 30-31 March; steam plumes, also reported by a pilot, rose several hundred feet above the crater on 30 March, and on 31 March observers on a Coast Guard ship reported that a steam-rich plume drifted 15-30 km S. The Aviation Color Code remained at Orange and the Volcano Alert Level remained at Watch.
Zhupanovsky | Eastern Kamchatka (Russia) | 53.589°N, 159.15°E | Elevation 2899 m
KVERT reported that a moderate explosive eruption at Zhupanovsky continued during 20-27 March. Based on observers and webcam recordings, explosions produced ash plumes that rose to an altitude of 8 km (26,200 ft) a.s.l. on 25 March and drifted more than 100 km ENE. A daily thermal anomaly was detected in satellite images. The Aviation Color Code remained at Orange.
Weekly Reports Archive
|Antuco||Great Sitkin||Makushin||Santa Maria|
|Apoyeque||Guagua Pichincha||Manda Hararo||Sarychev Peak|
|Azumayama||Hudson, Cerro||Metis Shoal||Sirung|
|Bagana||Huila, Nevado del||Michael||Slamet|
|Balbi||Hunga Tonga-Hunga Ha'apai||Misti, El||Soputan|
|Barren Island||Iliamna||Montagu Island||Soufrière Hills|
|Batur||Iliwerung||Moyorodake [Medvezhia]||Soufrière St. Vincent|
|Cameroon||Izu-Torishima||Negro, Cerro||Sulu Range|
|Campi Flegrei Mar Sicilia||Jackson Segment||Nightingale Island||Sumbing|
|Chiginagak||Karangetang [Api Siau]||Nyamuragira||Tair, Jebel at|
|Chillán, Nevados de||Karymsky||Ontakesan||Tanaga|
|Cleveland||Katmai||Palena Volcanic Group||Tara, Batu|
|Dempo||Kick 'em Jenny||Pinatubo||Tokachidake|
|Dieng Volcanic Complex||Kilauea||Poas||Toliman|
|Erebus||Krummel-Garbuna-Welcker Volcanic Complex||Raung||Veniaminof|
|Etorofu-Yakeyama [Grozny Group]||Kverkfjoll||Rincon de la Vieja||White Island|
|Fournaise, Piton de la||Lengai, Ol Doinyo||Ruapehu||Zubair Group|
|Fourpeaked||Leroboleng||Ruiz, Nevado del|
News Feeds and Google Placemarks
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Criteria & Disclaimers
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.
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
CENAPRED - Centro Nacionale de Prevencion de Desastres (México)
COSPEC - Correlation Spectrometer
CVGHM (formerly VSI) - Center of Volcanology and Geological Hazard Mitigation
GMS - Geostationary Meteorological Satellite
GVO - Goma Volcano Observatory
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)
M - magnitude
METEOSAT - Meteorological Satellite
MWO - Meteorological Watch Office
NOTAM - Notice to Airmen
OVSICORI-UNA - Observatorio Vulcanologico y Sismologico de Costa Rica, Universidad Nacional (Costa Rica)
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)
UTC - Coordinated Universal Time
VAAC - Volcanic Ash Advisory Center
VRC - Volcano Research Center (Japan)