Six stratovolcanoes comprising the Islands of Four Mountains in Alaska's central Aleutian Islands may not be separate volcanoes, but instead a part of one enormous volcanic caldera system, according to scientists who presented the evidence at the American…
Six people went missing after a massive landslide, among many other smaller ones, hit the community of Haines in southeast Alaska following heavy rains, the Alaska State Troopers reported Wednesday, December 2, 2020. Up to 3 m (9 feet) of debris engulfed the area,…
A shallow earthquake registered by the USGS as M6.3 hit the Fox Islands, Alaska at 16:22 UTC on December 1, 2020, at a depth of 23 km (14.3 miles). EMSC is reporting M6.3 at a depth of 54 km (33 miles). The epicenter was located 40 km (25 miles) E of Nikolski,…
Low-level seismicity continues at Korovin Volcano with no other signs of volcanic activity detected in infrasound sensors or partly cloudy satellite views, the Alaska Volcano Observatory (AVO) reported at 19:42 UTC on November 1, 2020. The last eruption at this…
Increased seismicity and recent satellite detections of significant sulfur dioxide emissions forced the Alaska Volcano Observatory (AVO) to increase alert levels for Korovin volcano on October 28, 2020. The Aviation Color Code was raised to Yellow and Alert Level to…
A strong earthquake registered by the USGS as M7.5 hit south of Alaska at 20:54 UTC (12:54 LT) on October 19, 2020. The agency is reporting a depth of 40 km (25 miles). The epicenter was located 91.7 km (56.9 miles) SE of Sand Point (population 1 064) and 929.9 km…
A slow-moving landslide of an entire mountainside in Alaska's Barry Arm area may generate a mega-tsunami if the land suddenly collapses into the narrow fjord. Research findings show that the collapse would generate 11 times more energy and release 16 times more…
Seismic activity at Pavlof volcano has increased on September 21, 2020, prompting the Alaska Volcano Observatory (AVO) to raise the Aviation Color Code to Yellow and Alert Level to Advisory. While this does not necessarily mean that an eruption is likely or…
A strong aftershock registered by the USGS as M6.1 hit near the coast of Alaska Peninsula, U.S. at 08:03 UTC on July 28, 2020, at a depth of 41.3 km (25.6 miles). This is yet another aftershock of powerful M7.8 earthquake that struck at 08:12 UTC on July 22. USGS…
A very strong and shallow earthquake registered by the USGS as M7.8 hit near the coast of Alaska Peninsula, U.S. at 06:12 UTC on July 22, 2020 (19:12 LT, July 21). The agency is reporting a depth of 28 km (17.4 miles). EMSC registered it as M7.8 at a depth of 30 km…
