Clouds have obscured satellite and web cameras views, but these explosions likely produced short-lived low-level ash emissions. Great Sitkin Volcano is monitored by local seismic and infrasound sensors, satellite data, web cameras, and remote infrasound and lightning networks.Ĭurrent Aviation Color Code: ORANGE Seismicity remains elevated, with tremor and small explosions detected over the past day. There is no indication of how long lava effusion will continue during the current eruption, and it is possible that explosive activity could occur with little or no warning. Moderately elevated surface temperatures were observed in satellite data during the last 24 hours, consistent with lava effusion continuing at the summit.
Semisopochnoi Island is monitored by local seismic and infrasound sensors, satellite data, web cameras, and remote infrasound and lightning networks.Ĭurrent Aviation Color Code: ORANGE Seismicity remains slightly elevated and no explosive activity has been observed in seismic or infrasound data over the past day. Small explosions may continue to occur and could be difficult to detect, especially during poor weather conditions. Small eruptions producing minor ash deposits within the vicinity of the active north crater of Mount Cerberus and ash clouds usually under 10,000 feet above sea level have characterized the recent activity, which shows no signs of abating. Satellite images were mostly cloudy during the last 24 hours however, clear web camera views showed low level (< 10,000 ft) explosive activity continuing at the summit.
Explosions and tremor were detected in seismic and infrasound data over the past day.
Geological Survey Saturday, October 30, 2021, 1:08 PM AKDT (Saturday, October 30, 2021, 21:08 UTC) SEMISOPOCHNOI VOLCANOĬurrent Aviation Color Code: ORANGE Eruptive activity continues at the north crater of Mount Cerberus. ALASKA VOLCANO OBSERVATORY DAILY UPDATE U.S.
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