Elevated surface temperatures and sulfur dioxide emissions have been detected at Cleveland volcano, Alaska, U.S. over the past couple of days, representing a departure from background activity.
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…
Satellite data from the past day suggest that slow effusion of lava may have begun in the summit crater. Thus, the Alaska Volcano Observatory (AVO) is increasing the Aviation Color Code to ORANGE and the Volcano Alert Level to WATCH on November 8, 2019. Highly…
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 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…
The Alaska Volcano Observatory has raised the Aviation Color Code for Cleveland volcano from Yellow to Orange on June 26, 2018, after detection of small lava flow inside summit crater. The last detected explosive activity at Cleveland volcano occurred May 5, 2018….
A new explosion was detected on Alaska's Cleveland volcano on April 4, 2018, prompting authorities to raise the Alert Level to Watch and the Aviation Color Code to Orange. It was a small explosion, detected using local seismic and infrasound sensors at 11:55 UTC…
Unrest continues at Alaska's Cleveland volcano following a small explosion detected in seismic and infrasound data at 14:57 UTC on March 2, 2018 The event generated a small volcanic cloud that drifted to the ENE at an altitude of approximately 4.5 km (15 000…
A new explosion was detected at Cleveland volcano, Alaska at 13:20 UTC on December 13, 2017. AVO raised the Aviation Color Code back to Orange. The explosion produced an eruption cloud that was observed in satellite data to an altitude of 6 km (20 000 feet) a.s.l….
The eruption of Cleveland volcano and slow growth of a small lava dome in the summit crater of the volcano continues, the Alaska Volcano Observatory reported at 20:00 UTC on Friday, October 6, 2017. Lava effusion in the summit crater was first noted in satellite…
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