Seismicity has been increasing over the last few days at Semisopochnoi volcano, Alaska and now is characterized by nearly continuous tremor and frequent small explosion signals. The situation represents a significant increase in activity and the Alaska Volcano…
Eruptive activity at Shishaldin volcano resumed on January 18, 2020, with lava flows visible on the NE flank. The Aviation Color Code remains Orange and Alert Level Watch since January 7. A weak plume, possibly containing a small quantity of ash, is visible in…
Ash cloud produced by the strong eruption at Shishaldin volcano, Aleutian Islands, Alaska at 14:10 UTC on January 7, 2020, reached 10 km (33 000 feet) above sea level before midnight UTC. Volcanic ash tops were raised from previously reported 7.6 km (25 000 feet)…
A new eruption is taking place at Shishaldin volcano, Alaska on January 3, 2020, with ash cloud rising to 6 – 7.3 km (20 000 – 24 000 feet) above sea level at 21:00 UTC, drifting E-SE. According to Alaska Volcano Observatory, the level of seismicity has increased to…
The eruption of Shishaldin Volcano that began in late July continues with low-level explosive activity near the summit and effusion of short lava flows, tha Alaska Volcano Observatory (AVO) reports. Elevated seismicity and surface temperatures were recorded…
A short-lived explosion occurred at Shishaldin volcano, Alaska, U.S. at 16:10 UTC (07:10 LT) on December 12, 2019. The eruption lasted about 3 minutes and produced an ash cloud up to 6 – 7.6 km (20 000 – 25 000 feet) above sea level, moving W-NW at 83 km/h (52 mph)….
An eruption signature was detected at Semisopochnoi as strong tremor on local seismic and in regional infrasound networks on Adak Island, Alaska Volcano Observatory reported at 10:25 UTC on December 7, 2019. The event started at 09:26 UTC (00:26 AKST) on December 7…
Activity at Shishaldin has increased significantly over the past day with fire-fountaining observed in web camera views throughout the evening and night, the Alaska Volcano Observatory (AVO) reported at 22:20 UTC on November 11, 2019. Strongly elevated surface…
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…
Low-level eruptive activity continues at Shishaldin Volcano. Two stalled lava flows extend beyond the summit crater up to 1.8 km (1.1 miles) down the northwest flank, and satellite data show trace ash deposits on the north flank and a lahar extending at least 4 km…
