Activity for the week of 12 July-18 July 2017
- Info & Contacts
Activity for the week of 12 July-18 July 2017
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.
|Bogoslof||Fox Islands (USA)||New|
|Bagana||Bougainville (Papua New Guinea)||Ongoing|
|Bezymianny||Central Kamchatka (Russia)||Ongoing|
|Cleveland||Chuginadak Island (USA)||Ongoing|
|Copahue||Central Chile-Argentina border||Ongoing|
|Ebeko||Paramushir Island (Russia)||Ongoing|
|Karymsky||Eastern Kamchatka (Russia)||Ongoing|
|Kilauea||Hawaiian Islands (USA)||Ongoing|
|Klyuchevskoy||Central Kamchatka (Russia)||Ongoing|
|Sheveluch||Central Kamchatka (Russia)||Ongoing|
Bogoslof | Fox Islands (USA) | 53.93°N, 168.03°W | Elevation 150 m
AVO reported that during 12-18 July no significant activity at Bogoslof was observed in cloudy or mostly cloudy satellite images; weakly elevated surface temperatures were noted on 12 and 16 July. In addition no activity was detected in seismic, infrasound, or lightning data. The Aviation Color Code remained at Orange and the Volcano Alert Level remained at Watch.
Fuego | Guatemala | 14.473°N, 90.88°W | Elevation 3763 m
INSIVUMEH reported that multiple explosions at Fuego during 13-14 July generated ash plumes that rose as high as 950 m above the crater and drifted 8-10 km NW and W. Incandescent material was ejected 100 m above the crater rim, and caused avalanches of material that traveled down the Ceniza (SSW), Taniluyá (SW), and Trinidad (S) drainages. On 16 July a 30-m-wide, 2-m-deep, hot lahar descended tributaries of the Pantaleón (W) drainage, carrying blocks more than 2 m in diameter, branches, and tree trunks. The lahars again overtook the road between communities on the SW flank, isolating the village of Sangre de Cristo (8 km WSW) and the Palo Verde estate. Vulcanian explosions during 17-18 July produced dense ash plumes that rose almost 1 km above the crater rim and drifted 15 km W and NW. Ash fell in Panimache (8 km SW), Morelia (9 km SW), and Santa Sofía (12 km SW).
Sangeang Api | Indonesia | 8.2°S, 119.07°E | Elevation 1949 m
PVMBG reported a small eruption at Sangeang Api at 1154 on 15 July characterized by Strombolian activity, and an ash plume that rose 100-200 m above the crater rim and drifted SW. Prior to the event, thermal anomalies had increased beginning in March, and seismicity had increased starting in April.
Based on analyses of satellite imagery, PVMBG observations, and wind data, the Darwin VAAC reported that on 16 July an ash plume rose to an altitude of 2.1 km (7,000 ft) a.s.l., or 200 m above the crater rim, and drifted NW.
Bagana | Bougainville (Papua New Guinea) | 6.137°S, 155.196°E | Elevation 1855 m
Bezymianny | Central Kamchatka (Russia) | 55.972°N, 160.595°E | Elevation 2882 m
KVERT reported that a thermal anomaly was identified over Bezymianny daily in satellite images. A lava flow continued to flow down the W flank of the dome. The Aviation Color Code remained at Orange (the second highest level on a four-color scale).
Cleveland | Chuginadak Island (USA) | 52.825°N, 169.944°W | Elevation 1730 m
AVO reported that during 12-18 July no significant activity at Cleveland was observed in cloudy or mostly cloudy satellite and web camera images; some minor steaming was noted. Moderately elevated surface temperatures were identified in satellite images on 14 July. Aviation Color Code remained at Orange and the Volcano Alert Level remained at Watch.
Copahue | Central Chile-Argentina border | 37.856°S, 71.183°W | Elevation 2953 m
Based on webcam and satellite images the Buenos Aires VAAC reported that during 16-17 July steam-and-ash plumes rose from Copahue to altitudes of 3-3.4 km (10,000-11,000 ft) a.s.l. and drifted N and NW.
Dukono | Halmahera (Indonesia) | 1.693°N, 127.894°E | Elevation 1229 m
Based on analyses of satellite imagery, wind model data, and notices from PVMBG, the Darwin VAAC reported that during 12-15 July ash plumes from Dukono rose to an altitude of 2.1 km (7,000 ft) a.s.l. and drifted W, NW, and S. Ash plumes on 17 July rose 1.5 km (5,000 ft) a.s.l. and drifted E.
Ebeko | Paramushir Island (Russia) | 50.686°N, 156.014°E | Elevation 1103 m
Based on observations by residents of Severo-Kurilsk (Paramushir Island), about 7 km E of Ebeko, explosions during 7-8 July generated ash plumes that rose as high as 1.5 km (4,900 ft) a.s.l. The Aviation Color Code remained at Orange (the second highest level on a four-color scale).
Karymsky | Eastern Kamchatka (Russia) | 54.049°N, 159.443°E | Elevation 1513 m
KVERT reported that a weak thermal anomaly over Karymsky was identified in satellite images during 7 and 11-12 July. Ash plumes drifted 170 km SW and SE on 10 and 11 July, respectively. The Aviation Color Code remained at Orange (the second highest level on a four-color scale).
Kilauea | Hawaiian Islands (USA) | 19.421°N, 155.287°W | Elevation 1222 m
During 12-18 July HVO reported that the lava lake continued to rise, fall, and spatter in Kilauea’s Overlook crater. Webcams recorded incandescence from long-active sources within Pu'u 'O'o Crater, from a vent high on the NE flank of the cone, and from a small lava pond (which had many small spattering sites along the margin) in a pit on the W side of the crater. The 61G lava flow, originating from a vent on Pu'u 'O'o Crater's E flank, continued to enter the ocean at Kamokuna. Several large cracks running parallel to the coastline spanned the width of the delta; several small collapses at the leading edge of the delta were noted on 11 July. Surface lava flows were active above and on the pali, and on the coastal plain within 1 km of the base of the pali.
Klyuchevskoy | Central Kamchatka (Russia) | 56.056°N, 160.642°E | Elevation 4754 m
KVERT reported that during 8 and 12-13 July explosions at Klyuchevskoy generated ash plumes that rose as high as 5 km (16,400 ft) a.s.l. and drifted about 50 km SE. A weak thermal anomaly was identified in satellite images during 10-12 July. The Aviation Color Code remained at Orange (the second highest level on a four-color scale).
Poas | Costa Rica | 10.2°N, 84.233°W | Elevation 2708 m
OVSICORI-UNA reported that during 12-17July gas plumes that rose as high as 1 km above Poás’s vents A (Boca Roja) and B (Boca Azufrada) drifted SW and NW.
Sabancaya | Peru | 15.787°S, 71.857°W | Elevation 5960 m
Observatorio Vulcanológico del Sur del IGP (OVS-IGP) and Observatorio Vulcanológico del INGEMMET (OVI) reported that explosive activity at Sabancaya increased compared to the previous week; there was an average of 19 explosions recorded per day during 10-16 July. Gas-and-ash plumes rose 3.5 km above the crater rim and drifted more than 40 km NW and E. Sulfur dioxide flux was as high as 2,959 tons per day, recorded on 16 July. The MIROVA system detected six thermal anomalies. An explosion at 0931 on 19 July generated an ash plume that rose 4 km above the crater rim and drifted N.
Sheveluch | Central Kamchatka (Russia) | 56.653°N, 161.36°E | Elevation 3283 m
KVERT reported that a thermal anomaly was identified daily in satellite images over Sheveluch during 7-11 July; cloud cover prevented views during 12-14 July. The Aviation Color Code remained at Orange (the second highest level on a four-color scale).
Sinabung | Indonesia | 3.17°N, 98.392°E | Elevation 2460 m
Based on PVMBG observations, satellite and webcam images, and wind data, the Darwin VAAC reported that during 14-15 July ash plumes from Sinabung rose 3.3-4.9 km (11,000-16,000 ft) a.s.l. and drifted E, ESE, SE, and W.
Turrialba | Costa Rica | 10.025°N, 83.767°W | Elevation 3340 m
OVSICORI-UNA reported eruptive events at Turrialba daily during 12-17 July. Gas and ash plumes rose 200-500 m above the vent and generally drifted NW, W, and SW. There were multiple events on 15 July, causing ashfall in Sabanilla de Montes de Oca (30 km WSW), Ipis (27 km SW), El Carmen de Guadalupe, Purral (26 km WSW), Guadalupe (32 km WSW), and Tibás (35 km WSW). A sulfur dioxide odor was also reported that day, in San José (36 km WSW), Tibas (35 km WSW), Guadalupe, Escazú (42 km WSW), and Puriscal (65 km WSW).
Weekly Reports Archive
|Arenal||Grimsvotn||Manda Hararo||Seulawah Agam|
|Axial Seamount||Hekla||McDonald Islands||Sirung|
|Bagana||Home Reef||Metis Shoal||Sorikmarapi|
|Bamus||Hudson, Cerro||Miyakejima||Soufriere Hills|
|Banda Api||Huila, Nevado del||Momotombo||Soufrière St. Vincent|
|Bardarbunga||Hunga Tonga-Hunga Ha'apai||Monowai||South Sarigan Seamount|
|Barren Island||Ibu||Montagu Island||Spurr|
|Batur||Ijen||Moyorodake [Medvezhia]||St. Helens|
|Bristol Island||Ioto||Negro, Cerro||Sundoro|
|Cameroon||Kaba||NW Rota-1||Tair, Jebel at|
|Campi Flegrei Mar Sicilia||Kambalny||Nyamuragira||Takawangha|
|Chiles-Cerro Negro||Kasatochi||Palena Volcanic Group||Tara, Batu|
|Chillan, Nevados de||Katla||Paluweh||Telica|
|Cotopaxi||Kick 'em Jenny||Poas||Toliman|
|Dieng Volcanic Complex||Klyuchevskoy||Raoul Island||Ulawun|
|Dukono||Kolokol Group||Rasshua||Unknown Source|
|Ekarma||Krummel-Garbuna-Welcker||Rincon de la Vieja||West Mata|
|Etorofu-Yakeyama [Grozny Group]||Lamongan||Ruapehu||Zavodovski|
|Eyjafjallajokull||Langila||Ruiz, Nevado del||Zhupanovsky|
|Fonualei||Lengai, Ol Doinyo||Salak|
|Fournaise, Piton de la||Leroboleng||San Cristobal|
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)