Activity for the week of 24 June-30 June 2015
- Info & Contacts
Activity for the week of 24 June-30 June 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.
|Cereme||Western Java (Indonesia)||New|
|Cleveland||Chuginadak Island (USA)||New|
|Raung||Eastern Java (Indonesia)||New|
|Karangetang [Api Siau]||Siau Island (Indonesia)||Ongoing|
|Karymsky||Eastern Kamchatka (Russia)||Ongoing|
|Kilauea||Hawaiian Islands (USA)||Ongoing|
|Manam||Papua New Guinea||Ongoing|
|Sheveluch||Central Kamchatka (Russia)||Ongoing|
|Shishaldin||Fox Islands (USA)||Ongoing|
|Zhupanovsky||Eastern Kamchatka (Russia)||Ongoing|
Cereme | Western Java (Indonesia) | 6.892°S, 108.4°E | Elevation 3078 m
Cleveland | Chuginadak Island (USA) | 52.825°N, 169.944°W | Elevation 1730 m
AVO reported that no significant activity was detected at Cleveland in seismic or infrasound data during 24-30 June. Elevated surface temperatures were detected during 28-30 June, and webcam images from 29 June showed fresh ash deposits at the summit. The Aviation Color Code remained at Yellow and the Volcano Alert Level remained at Advisory.
Colo | Sulawesi (Indonesia) | 0.162°S, 121.601°E | Elevation 404 m
PVMBG reports that seismicity significantly increased on 8 June, particularly volcanic and shallow-volcanic earthquakes; 12 volcanic earthquakes were recorded on 22 June (previously, 1-5 events per day had been recorded), and there were 11 shallow volcanic earthquakes on 23 June (previously, 1-8 events per day had been recorded). On 24 June the Alert Level was raised to 2 (on a scale of 1-4). However, observers at the Colo Volcano Observation Post in the Wakai village did not see plumes during April-23 June. Residents and tourists were warned not to approach the volcano within a radius of 1.5 km.
Concepcion | Nicaragua | 11.538°N, 85.622°W | Elevation 1700 m
INETER reported that gas explosions continued to be detected at Concepción; by 30 June a total of 2,417 explosions, 113 since 23 June, had been detected by the network since activity increased (date not specified).
Hakoneyama | Honshu (Japan) | 35.233°N, 139.021°E | Elevation 1438 m
JMA reported that on 29 June scientists visiting Hakoneyama observed new fumaroles in a landslide-prone area, appearing after a possible landslide had occurred. Fresh sediment deposits within 2 km were possibly caused by the formation of the fumaroles. Seismicity began increasing at 1930, and a 5-minute-period of volcanic tremor began at 1932. At 1230 on 30 June a small-scale eruption occurred. The Alert Level was raised to 3 (on a 5-level scale).
Raung | Eastern Java (Indonesia) | 8.125°S, 114.042°E | Elevation 3332 m
PVMBG reported that, during times of clear weather during 1-28 June, white plumes were observed rising as high as 300 m above Raung's crater rim. Rumbling was frequently heard at the observation post. Seismic tremor sharply increased on 21 June, and crater incandescence was observed on 25 and 28 June. BNPB reported that increased activity on 28 June was characterized by Strombolian activity, roaring, ash plumes that rose 300 m, and a loud thumping sound heard 20 km away at 2000. Incandescence from the crater was clearly visible from the observation post in Banyuwangi. PVMBG raised the Alert Level to 3 (on a scale of 1-4) on 29 June, and reminded the public not to approach the crater within a 3-km radius.
Sinabung | Indonesia | 3.17°N, 98.392°E | Elevation 2460 m
PVMBG reported that foggy weather sometimes prevented visual observations of Sinabung during 22-29 June. White plumes rose as high as 500 m above the crater, and lava flows on the flanks were incandescent as far as 3 km S and SE. Multiple pyroclastic flows per day during 22-26 and 28 June traveled 2.5-4 km down the flanks from the SSE to the SE. One pyroclastic flow was observed on 27 June. Ash plumes rose generally 3.5 km on most days, drifting E, SE, and S, although an ash plume rose as high as 5 km on 25 June. Seismicity consisted of avalanche signals, low-frequency and hybrid events, tremor, tectonic events, and volcanic earthquakes; RSAM values increased due to an increase of avalanche signals. Deformation data showed a trend of inflation. The Alert Level remained at 4 (on a scale of 1-4), indicating that people within 7 km of the volcano on the SSE sector, and within 6 km in the ESE sector, should evacuate.
Aira | Kyushu (Japan) | 31.593°N, 130.657°E | Elevation 1117 m
JMA reported 26 explosions during 22-29 June from Showa Crater at Aira Caldera’s Sakurajima volcano, some that ejected tephra as far as 1,300 m, and incandescence from the crater that was visible during 22-23 and 27 June. A small-scale eruption occurred from Minami-Dake Crater on 22 June. The Alert Level remained at 3 (on a 5-level scale).
Colima | Mexico | 19.514°N, 103.62°W | Elevation 3850 m
The Washington VAAC reported that an ash-and-gas plume from an explosion at Colima was recorded by the webcam on 24 June; weather clouds prevented views of the volcano.
Dukono | Halmahera (Indonesia) | 1.68°N, 127.88°E | Elevation 1335 m
Fuego | Guatemala | 14.473°N, 90.88°W | Elevation 3763 m
In a special report from 28 June at 2100, INSIVUMEH reported that activity at Fuego had been changing during the previous few hours, characterized by 4-5 explosions per hour and ash plumes rising 850 m. During 28-30 June ash plumes drifted W, causing ashfall in areas downwind. Shock waves from the explosions vibrated structures in areas including Panimache and Panimache II (8 km SW), Morelia (9 km SW), Santa Sofía (12 km SW), and Sangre de Cristo (8 km WSW). Block avalanches descended the flanks. Rumbling was audible as far as 25 km away. During 29-30 June a 300-m-long lava flow was visible in the Las Lajas drainage on the SE flank.
Karangetang [Api Siau] | Siau Island (Indonesia) | 2.78°N, 125.4°E | Elevation 1784 m
PVMBG reported that on 18 June a lahar in Karangetang’s Batuawang drainage (E) was 25 cm thick, carried boulders, and covered a 100-m section of roadway. The lahar also damaged or destroyed four homes. Based on observations conducted at the Karangetang Volcano Observation Post in the village of Salili, white plumes rose as high as 150 m above the main crater and 25 m above Crater II during 22-29 June. Incandescence from the lava dome was observed at night. Lava flowed from the S part of the dome; incandescent avalanches from the front the lava flow traveled as far as 2.3 km towards Batuawang and Kahetang drainages (E). Seismicity was dominated by signals characteristic of avalanches, and indicated that activity continued to be high. The Alert Level remained at 3 (on a scale of 1-4); visitors and residents were warned not to approach Karangetang within a 4-km radius.
Karymsky | Eastern Kamchatka (Russia) | 54.049°N, 159.443°E | Elevation 1513 m
Kilauea | Hawaiian Islands (USA) | 19.421°N, 155.287°W | Elevation 1222 m
HVO reported that seismicity beneath Kilauea's summit and upper East Rift Zone was at background levels during 24-30 June. The lava lake continued to be active in the deep pit within the Overlook vent, exhibiting vigorous spattering. The June 27th NE-trending lava flow continued to be active with surface flows within 8 km NE of Pu'u 'O'o.
Manam | Papua New Guinea | 4.08°S, 145.037°E | Elevation 1807 m
Based on observations of satellite imagery and wind data analyses, the Darwin VAAC reported that during 28-30 June ash plumes from Manam rose to altitudes of 1.8-3 km (6,000-10,000 ft) a.s.l. and drifted as far as 75 km NE.
Nishinoshima | Japan | 27.247°N, 140.874°E | Elevation 25 m
According to NASA's Earth Observatory, a satellite image of Nishinoshima acquired on 21 June showed a sulfur dioxide-and-steam plume rising from the 2.45-square-kilometer island and drifting NE. Hot spots from lava that had emerged from lava tubes were visible on a lava delta at the SE part of the island.
Source: NASA Earth Observatory
Sheveluch | Central Kamchatka (Russia) | 56.653°N, 161.36°E | Elevation 3283 m
KVERT reported that during 19-26 June lava-dome extrusion onto Sheveluch’s N flank was accompanied by fumarolic activity. Satellite images showed a thermal anomaly over the volcano during 23-24 June; weather clouds obscured the volcano on the other days. 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 24-30 June, indicating that low-level eruptive activity confined to the summit crater likely continued. Elevated surface temperatures were periodically detected in satellite images. Webcam images showed ash deposits around the summit crater rim on 29 and 30 June. The Aviation Color Code remained at Orange and the Volcano Alert Level remained at Watch.
Ubinas | Peru | 16.355°S, 70.903°W | Elevation 5672 m
Instituto Geofísico del Perú (IGP) Observatorio Volcanológico del Sur (OVS) reported that during 23-29 June seismic tremor at Ubinas, often associated with emissions, slightly increased compared to the previous week. Ash-and-gas plumes rose as high as 3 km above the crater base, drifting in multiple directions, and four explosions were detected during 24-27 June.
Zhupanovsky | Eastern Kamchatka (Russia) | 53.589°N, 159.15°E | Elevation 2899 m
Weekly Reports Archive
|Alaid||Galeras||Little Sitkin||San Cristobal|
|Aoba||Great Sitkin||Makian||Santa Maria|
|Arenal||Guagua Pichincha||Manam||Sarychev Peak|
|Azul, Cerro||Hokkaido-Komagatake||McDonald Islands||Sinarka|
|Balbi||Hudson, Cerro||Metis Shoal||Slamet|
|Bamus||Huila, Nevado del||Michael||Soputan|
|Bardarbunga||Hunga Tonga-Hunga Ha'apai||Misti, El||Sorikmarapi|
|Batur||Ijen||Monowai Seamount||Soufrière Hills|
|Bezymianny||Iliamna||Montagu Island||Soufrière St. Vincent|
|Cameroon||Ioto||Negra, Sierra||Sulu Range|
|Campi Flegrei Mar Sicilia||Izu-Torishima||Negro, Cerro||Sumbing|
|Cereme||Jackson Segment||Nightingale Island||Sundoro|
|Chiginagak||Kanlaon||NW Rota-1||Tair, Jebel at|
|Chikurachki||Karangetang [Api Siau]||Nyamuragira||Talang|
|Chillán, Nevados de||Karthala||Okmok||Tanaga|
|Colima||Katmai||Palena Volcanic Group||Telica|
|Dempo||Kick 'em Jenny||Pinatubo||Tolbachik|
|Dieng Volcanic Complex||Kilauea||Poas||Tongariro|
|Erta Ale||Krummel-Garbuna-Welcker Volcanic Complex||Redoubt||West Mata|
|Etorofu-Yakeyama [Grozny Group]||Kusatsu-Shiranesan||Rincon de la Vieja||Witori|
|Fournaise, Piton de la||Lascar||Ruapehu||Zubair Group|
|Fourpeaked||Lengai, Ol Doinyo||Ruiz, Nevado del|
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.
The CAP (Common Alerting Protocol) feeds are XML files specifically formatted for disaster management. They are similar in content to the RSS feed, but contain no active links.
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
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)