Alert USA
Great Sitkin — WATCH (ORANGE)
weather USGS Volcano severe Great Sitkin, AVO May 21, 2026 at 8:15 PM

Great Sitkin — WATCH (ORANGE)

Volcanic activity watch issued by Alaska Volcano Observatory. Aviation color code: ORANGE.

Open Alert USA
Shared via Alert USA — emergency & community news, all 50 states + 5 territories.