Researchers uncovered the reason for unexpected strike-slip earthquakes, where two pieces of crust slide past each other on a fault, in areas where subduction zone tremors are common. From July to October 2020, a series of earthquakes occurred in Shumagin Islands,…
The Alaska Volcano Observatory (AVO) has raised the Aviation Color Code for Cleveland volcano to Yellow and the Volcano Alert Level to Advisory at 21:44 UTC on March 20, 2021. Satellite detections of increased volcanic gas emissions and elevated surface temperatures…
Regional infrasound sensors detected a small explosion at Semisopochnoi volcano, Alaska on March 19, 2021, indicating an increase in eruptive activity. As a result, the Alaska Volcano Observatory (AVO) has raised the Aviation Color Code to ORANGE and the Volcano…
The Alaska Volcano Observatory (AVO) has raised the Volcano Alert Level to Watch and the Aviation Color Code to Orange for Veniaminof volcano at 18:04 UTC on March 4, 2021. The last time this volcano erupted was in 2018 (VEI 1). According to Volcano Observatory…
At least 15 people lost their lives due to avalanches in the U.S. from January 30 to February 6 this year– the worst and deadliest in the country since 1910, according to the Colorado Avalanche Information Center (CAIC). It included avalanches in Alaska,…
A high-resolution satellite image acquired on February 7, 2021, shows a second small ash deposit extending at least 3 km (1.8 miles) to the northeast from North Cerberus Crater on Semisopochnoi Island, similar to the first observed on February 6. Clouds obscured…
High-resolution satellite imagery acquired on February 6, 2021, showed a small ash deposit extending less than 3 km (1.8 miles) to the north from North Cerebus Crater on Semisopochnoi Island, Alaska, U.S. Steam emissions obscured views into the crater, the Alaska…
A powerful winter storm is set to blast Southeast Alaska with hurricane-force winds on Wednesday, January 6, 2021. New storms are expected to form in the days ahead, bringing severe winds, snow, and major waves to the region. An ongoing La Niña is resulting…
A strong and shallow earthquake registered by the USGS as M6.1 hit the Andreanof Islands, U.S. at 12:38 UTC on January 3, 2021. The agency is reporting a depth of 17 km (10.5 miles). EMSC is reporting M6.1 at a depth of 48 km (30 miles). The epicenter was located…
An extratropical storm moving northeast across the North Pacific is forecast to bring major waves, strong winds, and heavy rains and snow to Southeast Alaska on Tuesday, December 15, 2020. The system has already generated significant wave heights that are being…
