Volcanic Eruptions at Shishaldin
Right now
The most recent data we hold from USGS arrived 30 minutes ago, and this point is in it.
Nothing else has been detected within 20 km in the last 24 hours.
Reported by USGS yesterday.
It is the strongest of the 147 detections recorded within 20 km of this point since 7 March 2026. The last comparable one was on 4 September 2026.
What the source measured
USGS reported: AVO Shishaldin YELLOW/ADVISORY - Low-level seismic unrest continues. Steaming observed.
USGS moved the alert level from NORMAL to ADVISORY.
Nearby, since 7 March 2026
- September 4, 2026 · score 18 · 0.0 km
- September 3, 2026 · score 18 · 0.0 km
- September 2, 2026 · score 18 · 0.0 km
How we know
One source: USGS. Not yet confirmed by a second, independent source.
Our own score for this event is 24 out of 100, at 62 % confidence.
The score is ours, computed from intensity, exposed population and local history — not the source’s.
Computed under scoring rules v4. Rows carrying other versions were judged by different rules and are not directly comparable.
Event Data
| Type | Volcanic Eruptions |
| Severity | Medium |
| Calamity Score (ours) | 24 / 100 |
| Our confidence | 62% |
| Coordinates | 54.7554, -163.9711 |
| Nearest City | Anchorage (1094 km) |
| Impact Tier | minor |
| Timestamp | 2026-09-05T18:37:00.000Z |
| Source | https://volcanoes.usgs.gov/hans2/view/notice/DOI-USGS-AVO-2026-09-05T18:33:56+00:00 |
Score Breakdown
Technical Details
| VolcanoName | Shishaldin |
| VolcanoId | 311360 |
| AlertLevel | ADVISORY |
| ColorCode | YELLOW |
| ObservatoryCode | avo |
| NvewsThreat | High Threat |
| PreviousAlertLevel | NORMAL |
| PreviousColorCode | GREEN |
Safety Information
During volcanic activity: follow evacuation orders from authorities. Volcanic ash can damage lungs — wear N95 masks or wet cloth over nose and mouth. Stay indoors during ashfall, close windows, and avoid driving. Lahars and pyroclastic flows can travel at high speeds — stay away from valleys and river channels near the volcano.
Series begins 8 March 2026 for live collection; the monthly chart also counts backfilled detections from 10 February 2024. Collection gap: 14-26 August 2026.
This data is aggregated algorithmically from scientific sources. Not a replacement for official emergency warnings.
Want to know when something happens in this area?
Calamity.live data shows a volcano event with CalamityScore 24/100, at Shishaldin, based on data from usgs_volcano. Source: Calamity.live, a platform aggregating real-time data from 185 scientific monitoring sources.