A massive M7.9 earthquake (downgraded from M8.0) struck Aleutian Islands, Alaska on June 23, 2014, at 20:53 UTC. USGS is reporting depth of 107.5 km (66.8 miles). EMSC is reporting M7.9 at depth of 100 km.Epicenter was located 24 km (15 miles) S
Magnitude 6.1 earthquake hit Fox Islands, Aleutian Islands, Alaska on February 26, 2014 at 21:13:40 UTC. The epicenter was located 138 km (85 mi) NNW of Amukta Island, Alaska at coordinates 53.679N 171.837W.
The epicenter was at depth of 264 km (164.5
The Alaska Volcano Observatory reported on January 30 that it raised the Aviation Color Code to YELLOW and the Alert Level to ADVISORY at Shishaldin Volcano.
The decision was based on satellite observations of increased surface temperatures in the summit
Earthquake sequence that started with M 7.0 on August 30 at 16:25 UTC generated 44 M1+ earthquakes until 07:00 UTC on August 31, according to USGS. In that timeframe, USGS reported 30 M2.5+ earthquakes and 13 M4.5+, with strongest being M6.1 at 06:38 UTC and M5.5 at…
Current eruptive episode at Pavlof volcano, Alaska began on May 13, 2013 with ash emissions continuing through May 28, 2013 at which time the volcano remain calm. Activity renewed on June 4, 2013. Such pauses are common during eruptive episodes of Pavlof, which
Alaska Volcano Observatory (AVO) reports that seismic tremor, intense elevated surface temperatures, and ash, gas and steam emissions continue at Pavlof volcano. A low-level plume of steam, ash, and gas, occasionally reaching up to 20,000 ft (6 km) above sea
Alaska Volcano Observatory (AVO) infrasound detected 2-3 possible explosion at Cleveland Volcano early on May 4, 2013. The infrasound signals suggest that this was a relatively short duration, low-level explosion. A small, low-altitude ash cloud along with high
Elevated surface temperatures were detected in satellite images of Cleveland volcano over the last 24 hours. The aviation color code and volcano alert level were changed to ORANGE/WATCH based on evidence that a new dome has formed in the summit crater of Cleveland. The
A series of small earthquakes near a long-dormant volcanic peak in Alaska’s Aleutian Islands has prompted researchers to raise the alert level for the Little Sitkin volcano. Swarm of high-frequency earthquakes began on night of August 29 night at approximately
A very strong and shallow M6.2 earthquake occurred near the Fox Islands (Aleutian Islands), Alaska on August 10, 2012 at 18:37 UTC according to USGS. The epicenter is located 90 km ESE from Nikoloski, the nearest island (52.691°N, 167.484°W). The epicenter of the