Glowing lava can be seen within the summit crater of Shishaldin, Tuesday, July 18, 2023, as seen from the WTUG webcam located northwest of the volcano. (Alaska Volcano Observatory/U.S. Geological ...

Shishaldin is one of the most active volcanoes that are part of the Aleutian Island arc, with 26 confirmed eruptions since 1824. Shishaldin was elevated to yellow in July 2019.

Shishaldin is one of the most active volcanoes in the Aleutian volcanic arc. Most eruptions are small. An event in 1999 spewed an ash column that reached 45,000 feet (13,716 meters).

Lightning detections at Shishaldin Volcano, concurrent with ash emissions at about 6 a.m. AKDT, Sept 25, 2023.(AVO) Shishaldin has seen an increase in activity since the summer.

Lightning detections at Shishaldin Volcano, concurrent with ash emissions at about 6 a.m. AKDT, Sept 25, 2023. (AVO) Shishaldin has seen an increase in activity since the summer.

According to the Alaska Volcano Observatory, a "significant explosion" occurred at 1:09 a.m. AKDT, producing an ash cloud soaring up to 40,000 feet above sea level.

Previously, the volcano spewed an ash cloud with a height of 5.5 miles, but emissions soon fell below 2 miles by early afternoon. The Shishaldin Volcano is one of the most active in the Aleutian ...

Lightning detections at Shishaldin Volcano, concurrent with ash emissions at about 6 a.m. AKDT, Sept 25, 2023.(AVO) Shishaldin has seen an increase in activity since the summer.

FILE - Shishaldin Volcano is seen during a previous eruption on Aug. 12, 2023.(KTUU) By Aaron Morrison and Gray News staff Published: Sep. 25, 2023 at 12:39 PM MST ...

Lightning detections at Shishaldin Volcano, concurrent with ash emissions at about 6 a.m. AKDT, Sept 25, 2023.(AVO) Shishaldin has seen an increase in activity since the summer.