Ash-emissions at Pavlof volcano, Aviation Color Code raised to Orange, Alaska

Ash-emissions at Pavlof volcano, Aviation Color Code raised to Orange, Alaska

Low-level ash emissions were observed at Pavlof volcano, Alaska on August 5, 2021, prompting the Alaska Volcano Observatory (AVO) to raise the Aviation Color Code to Orange and Alert Level to Watch. In addition, seismic tremor and small explosions have been detected…

Yellowstone registers most energetic swarm of earthquakes since 2017

Yellowstone registers most energetic swarm of earthquakes since 2017

The month of July saw the most energetic swarm of earthquakes in the region since the Maple Creek earthquake swarm of June-September 2017, the Yellowstone Volcano Observatory (YVO) reported in their monthly update released August 2, 2021. While above average, this…

Earthquake swarm under Mount Hood volcano, Oregon

Earthquake swarm under Mount Hood volcano, Oregon

The Cascades Volcano Observatory (CVO) has detected an earthquake swarm in the Mount Hood area, Oregon on June 5, 2021. The swarm continued into June 6 when the activity started to quiet down. The last known eruption of this volcano took place in 1865 and 1866 (VEI…

Low-level seismicity continues at Korovin volcano, Alaska

Low-level seismicity continues at Korovin volcano, Alaska

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…

Korovin volcano alert level raised, Alaska

Korovin volcano alert level raised, Alaska

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…

Increased seismicity at Pavlof volcano, Alaska

Increased seismicity at Pavlof volcano, Alaska

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…

Increased earthquake activity at Makushin volcano, Alaska

Increased earthquake activity at Makushin volcano, Alaska

The Alaska Volcano Observatory (AVO) is recording increased earthquake activity at Makushin volcano over the past 2 weeks. In response, the observatory raised the Aviation Color Code to Yellow on June 15 and plans to continue close monitoring of seismic activity,…

Alerts raised after increased seismicity under Veniaminof volcano, Alaska

Alerts raised after increased seismicity under Veniaminof volcano, Alaska

Over the past several days there have been periods of seismic tremor and occasional earthquakes at Veniaminof volcano, forcing the Alaska Volcano Observatory (AVO) to raise the Aviation Color Code to Yellow and the Volcano Alert Level to Advisory. The volcano has a…

Geysers may be signaling magma intrusion under Yellowstone caldera

Geysers may be signaling magma intrusion under Yellowstone caldera

Steamboat Geyser in Wyoming is the world's tallest active geyser, which sometimes blasts water over 90 m (300 feet) into the air. At times, the geyser stays quiet for years then abruptly bursts back to life– a behavior that has been puzzling scientists. A new…

Explosion at Cleveland volcano, Aviation Color Code raised to Orange, Alaska

Explosion at Cleveland volcano, Aviation Color Code raised to Orange, Alaska

A small explosion was detected at Cleveland volcano by regional infrasound sensors at about 06:32 UTC on June 2, 2020 (22:32 AKST, June 1). No other significant activity was detected and local monitoring stations are offline. A small ash plume was observed at 6.7…