Volcanic Eruptions at Atka volcanic complex
Right now
The most recent data we hold from USGS arrived 3 hours ago, and this point is not in it. We record detections, not passes: an absence is not proof that nothing is there.
Nothing else has been detected within 20 km in the last 24 hours.
Reported by USGS 183 days ago.
No stronger detection stands among the 32 recorded within 20 km of this point since 15 March 2026 — 31 others scored the same. Another comparable one was recorded here earlier the same day. One more was recorded here in the fortnight before it.
What the source measured
USGS reported: AVO Atka volcanic complex YELLOW/ADVISORY - Increase in seismic activity and SO2 detected in satellite
USGS moved the alert level from WATCH to ADVISORY.
Nearby, since 15 March 2026
- April 13, 2026 · score 20 · 0.0 km
- April 12, 2026 · score 20 · 0.0 km
- April 11, 2026 · score 20 · 0.0 km
How we know
One source: USGS. Not yet confirmed by a second, independent source.
Our own score for this event is 20 out of 100.
This is our versioned heuristic index, not source severity or a calibrated probability. Urban PEI does not count unique people.
Computed under scoring rules v1. Rows carrying other versions were judged by different rules and are not directly comparable.
Event Data
| Type | Volcanic Eruptions |
| Severity | Medium |
| Calamity Score (ours) | 20 / 100 |
| Legacy data-support index | 0.62/1 |
| Coordinates | 52.3309, -174.1390 |
| Nearest City | Anadyr (1459 km) |
| Urban exposure index (PEI) | 0 within 100 km |
| Impact Tier | minor |
| Timestamp | 2026-03-15T00:36:53.000Z |
| Source | https://volcanoes.usgs.gov/hans2/view/notice/DOI-USGS-AVO-2026-03-15T01:31:03+00:00 |
Physical priority index · v1. Heuristic priority, not calibrated probability, predictive accuracy or damage. The legacy data-support index combines assigned source support and field availability. Urban PEI is distance-weighted and does not count unique people; zero does not establish that nobody is present. Model cards.
Source and revision timeline
Source: usgs_volcano. Occurrence: 2026-03-15T00:36:53.000Z.
First archived: 2026-03-15T19:17:04.792Z. Material modification: not recorded.
Retained revisions are prospective; earlier versions may be unavailable. No revision entry does not prove that a record never changed.
Score Breakdown
Technical Details
| VolcanoName | Atka volcanic complex |
| VolcanoId | 311160 |
| AlertLevel | ADVISORY |
| ColorCode | YELLOW |
| ObservatoryCode | avo |
| NvewsThreat | High Threat |
| PreviousAlertLevel | WATCH |
| PreviousColorCode | ORANGE |
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. Comparisons refer to that period only. Collection gap: 14-26 August 2026.
This data is aggregated algorithmically from scientific sources. Not a replacement for official emergency warnings.
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