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Cleveland volcano
Stratovolcano 1730 m (5,676 ft)
Aleutian Islands, Alaska, 52.83°N / -169.94°W
Current status: minor activity or eruption warning (3 out of 5)
Cleveland webcams / live data | Reports
Cleveland volcano books
Cleveland volcano eruptions:
1893, 1897, 1929(?), 1932, 1938, 1944, 1951(?), 1953(?), 1975(?), 1984, 1985(?), 1986, 1987, 1989(?), 1994, 2001, 2006, 2008, 2010, 2011, 2012, 2013, 2014, 2015, 2016, 2017
Typical eruption style:
Explosive
Last earthquakes nearby
Latest satellite images
Cleveland volcano satellite image by (c) Google Earth View
Cleveland volcano satellite image by (c) Google Earth View
 

Eruption news from Cleveland volcano:

Cleveland volcano (Aleutian Islands, USA): aviation colour code raised to orange as satellite image reveals lava flow in summit crater

Thursday Jun 28, 2018 14:17 PM |

A photo of Mount Cleveland taken on July 24, 2016. This image shows Cleveland's steep stratovolcano geometry and minor degassing from the summit. Photo by John Lyons, Alaska Volcano Observatory / USGS.
A photo of Mount Cleveland taken on July 24, 2016. This image shows Cleveland's steep stratovolcano geometry and minor degassing from the summit. Photo by John Lyons, Alaska Volcano Observatory / USGS.
The Alaska Volcano Observatory (AVO) reported on Tuesday evening 26 June 2018 that satellite images obtained from Cleveland volcano the day before show a small circular lava flow of about 80 meters (260 feet) diameter covering the floor of the summit crater. The presence of a lava flow over the active vent increases the possibility of a vent clearing explosion over the coming days to weeks and thus AVO is raising the Aviation Colour Code ORANGE and the Volcano Alert Level to WATCH.

Cleveland volcano, located on the uninhabited Chuginadak Island in the Aleutian Chain, is monitored by only two seismic stations which restricts the AVO's ability to detect precursory unrest that may lead to an explosive eruption. Recently there were some problems with data transmission of ongoing geophysical monitoring so that seismic and infrared data were temporarily unavailable, but over the past weeks the volcano has been in constant low-level seismic unrest. Although satellite observations were mostly obscured by clouds over the past days, a possible steam emission has been noted that may be related to the effusion of lava in the summit crater.

The last detected explosive activity at Cleveland volcano occurred at 21h49 on May 4, 2018 (local time) and generated an ash plume that rose to 6700 m (22,000 ft). The AVO reports that ‘Occasional, short duration explosive activity with minimal to no precursory signals is common at Cleveland Volcano, and explosions may occur without warning. Explosions typically produce relatively small volcanic ash clouds that dissipate within hours; however, more significant ash emissions may occur as they have in the past.’ KTVA reports in an online news article that Cleveland volcano is responsible for the only known fatality from an Aleutian eruption. According to them the Oregon State University documents this deadly incident among a small group of soldiers that was stationed on the island during an eruption in June of 1944.
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Links / Sources:
Previous news
Sunday, May 20, 2018
Volcanic Ash Advisory Center Anchorage (VAAC) issued the following report: ... [more]
Seismic recording from CLCO station showing the explosion at Cleveland this morning at 05:49 UTC (image: AVO / USGS)
Saturday, May 05, 2018
A moderate explosion occurred at the volcano this morning (21:49 yesterday local time), detected by local seismic and infrasound sensors, the Alaska Volcano Observatory (AVO) reported. ... [more]
Saturday, May 05, 2018
Volcanic Ash Advisory Center Anchorage (VAAC) issued the following report: ... [more]
Monday, Apr 09, 2018
The alert level was lowered back to yellow yesterday. No significant activity was detected from the volcano since the small explosion on 4 April. [more]
Wednesday, Apr 04, 2018
A small explosion occurred at the volcano today at 11:55 UTC or 03:55 local Alaska time. It was detected by AVO's local seismic and infrasound sensors. ... [more]

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