Active seismic activity beneath the Tanaga and Takawangha volcanoes on Tanaga Island, Alaska, approximately 8 kilometers (5 miles) apart, has increased the potential for eruption, according to official reports from the Alaska Volcano Observatory (AVO).
In response to increased seismicity beneath the Tanaga volcano detected on March 6 and 7, 2023, the Alaska Volcano Observatory (AVO) raised the Aviation Color Code to Yellow and the Volcano Alert Level to Advisory.
On February 22, 2023, the Alaska Volcano Observatory (AVO) raised the alert level of Trident Volcano to ADVISORY and the Aviation Color Code to YELLOW due to an increase in seismic activity beneath the volcano. The last eruption at this volcano was in 1974 (VEI 3).
The Alaska Volcano Observatory (AVO) has raised the Aviation Color Code to YELLOW and the Volcano Alert Level to ADVISORY for Aniakchak volcano on February 23, 2023, following an increase in seismic activity. The last eruption at this volcano took place in 1931 (VEI 4).
A strong earthquake registered by the USGS as M6.2 hit Rat Islands, Aleutian Islands, Alaska at 18:40 UTC on December 14, 2022. The agency is reporting a depth of 83.7 km (52 miles). EMSC is reporting M6.1 at a depth of 80 km (49.7 miles).
Earthquake swarm under Takawangha volcano, Alaska continues since mid-November. The Aviation Color Code remains at Yellow and the Volcano Alert Level at Advisory. The last known eruption at this volcano took place in 1550 CE (VEI unknown).
Remnants of Typhoon “Merbok” slammed into western Alaska, U.S. on September 16 and 17, 2022, bringing significant storm surge and high winds to the region. This was the worst September storm to hit Alaska since the 1970s.
Remnants of Typhoon “Merbok” will bring potentially historical coastal flooding, high surf, coastal erosion, high winds, high seas and heavy rain to western Alaska and the Bering Sea through the weekend, the National Weather Service (NWS) warns.
The remnants of Typhoon “Merbok” are working through the Bering Sea, bringing the potential for historic coastal flooding and storm surges as the system works through the region this weekend.
A seismic swarm started under Trident stratovolcano, Alaska on August 24, 2022, likely driven by the movement of magma or magmatic fluids. The swarm is still in progress but now at a decreased rate. The last eruption of this volcano took place in 1974 (VEI 3).
