Volcano Activity Notifications

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Publication Date: Date Range: Volcano: Search report types: Color Codes: Alert Level:

About Color Codes & Alert Levels

In 2008, AVO switched to a new program to release reports. Reports prior to 2008 have been archived in a separate system. Due to the way these reports have been stored, archived reports cannot by searched by color code, alert level, and report type. If you would like to include archived reports in your search, check the box below.

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Latest HANS Notifications

Sent	Notice Type	Volcanoes	Notice ID/Link
December 21, 2025, 11:19 am	Daily Update	Great Sitkin,Shishaldin	DOI-USGS-AVO-2025-12-21T20:06:05+00:00
December 20, 2025, 10:41 am	Daily Update	Great Sitkin,Shishaldin	DOI-USGS-AVO-2025-12-20T19:24:53+00:00
December 19, 2025, 11:55 am	Weekly Update	Great Sitkin,Shishaldin	DOI-USGS-AVO-2025-12-19T19:23:39+00:00
December 18, 2025, 10:00 am	Daily Update	Great Sitkin,Shishaldin	DOI-USGS-AVO-2025-12-18T18:58:11+00:00
December 17, 2025, 10:29 am	Daily Update	Great Sitkin,Shishaldin	DOI-USGS-AVO-2025-12-17T19:28:34+00:00
December 16, 2025, 10:58 am	Daily Update	Great Sitkin,Shishaldin	DOI-USGS-AVO-2025-12-16T19:51:44+00:00
December 15, 2025, 11:44 am	Daily Update	Great Sitkin,Shishaldin	DOI-USGS-AVO-2025-12-15T20:30:36+00:00

Alaska Volcano Observatory

Volcano Activity Notifications

Latest HANS Notifications