A new lava dome was observed in the summit crater of Cleveland volcano prompting the Alaska Volcano Observatory to upgrade the Color Code/Alert Level to ORANGE/WATCH on January 17, 2019. No explosive activity has been detected or observed in seismic or infrasound…
A strong and shallow earthquake registered by the USGS as M6.1 hit off the coast of Cold Bay, Alaska at 02:35 UTC on December 31, 2018. The agency is reporting a depth of 26.9 km (18.4 miles). EMSC is reporting M6.1 at a depth of 40 km (24.8 miles). This earthquake…
A short-lived explosion was detected at Cleveland volcano early December 29, 2018. Ash cloud was reported rising up to 5.2 km (17 000 feet) above sea level. The Aviation Color Code remains Orange since December 12. Local seismic sensors recorded a short-lived…
Ash emissions at Veniaminof volcano increased significantly on November 21, 2018, forcing Alaska Volcano Observatory to raise the Aviation Color Code to Red and Volcano Alert Level to Warning. Veniaminof is generating a plume of ash up to 4.6 km (15 000 feet) above…
Strong seismic tremor consistent with an eruption was recorded at Semisopochnoi volcano starting at 04:47 UTC (20:47 AKDT) on October 26, 2018. Satellite data through 05:00 UTC showed a small ash cloud at about 3.6 km (12 000 feet) above sea level, the Alaska…
The Alaska Volcano Observatory (AVO) has raised the Aviation Color Code to Orange and the Volcano Alert Level to Watch for Veniaminof volcano at 21:29 UTC on September 4, 2018. The last known eruption of this volcano took place in 2013. The decision to raise alerts…
A strong and shallow earthquake registered by the USGS as M6.0 hit Fox Islands, Aleutian Islands, Alaska at 16:50 UTC (07:50 local time) on August 25, 2018. The agency is reporting a depth of 35.1 km (21.8 miles). EMSC is reporting M5.9 at a depth of 40 km (24.8…
A strong earthquake registered by the USGS as M6.3 hit near Tanaga Volcano, Andreanof Islands, Alaska at 03:56 UTC on August 23, 2018 (18:35 local time, August 22). The agency is reporting a depth of 43.9 km (27.3 miles). EMSC is reporting M6.3 at a depth of 60 km…
A strong and shallow earthquake registered by the USGS as M6.6 hit the Andreanof Islands, Aleutian Islands, Alaska at 21:57 UTC on August 15, 2018. The agency is reporting a depth of 31.6 km (19.6 miles). EMSC is reporting M6.6 at a depth of 40 km (24.8 miles)….
The USGS recorded more than 270 earthquakes in Alaska's North Slope on Sunday, August 12 and Monday, August 13, 2018, including M6.4, the most powerful earthquake ever to hit the region. The previous most powerful quake in the North Slope was M5.2 registered in…
