Earthquake 89 km SSW of Nikolski, Alaska
Reported by USGS today.
No stronger detection stands among the 8 recorded within 20 km of this point since 18 March 2026 — one other scored the same. The last comparable one was on 3 August 2026.
What the source measured
USGS reported: 89 km SSW of Nikolski, Alaska
USGS recorded magnitude 5.3 at a depth of 26 km.
This is the highest magnitude we have recorded at this point, over 11 readings since 1 September 2026 — the previous range was 5.2 to 5.3.
Nearby, since 18 March 2026
- July 10, 2026 · score 0 · 0.7 km
- May 23, 2026 · score 16 · 2.7 km
- September 1, 2026 · score 18 · 8.4 km
How we know
Confirmed by 2 independent sources, including USGS.
Our own score for this event is 18 out of 100, at 67 % confidence.
The score is ours, computed from intensity, exposed population and local history — not the source’s.
Event Data
| Type | Earthquake |
| Severity | medium |
| Calamity Score (ours) | 18 / 100 |
| Our confidence | 67% |
| Coordinates | 52.2132, -169.4456 |
| Nearest City | Anchorage (1547 km) |
| Impact Tier | minor |
| Timestamp | 2026-09-01T06:44:36.948Z |
| Source | https://earthquake.usgs.gov/earthquakes/eventpage/us7000tdab |
Score Breakdown
Technical Details
| Mag | 5.3 |
| Depth | 26 |
| Tsunami | false |
| Felt | 3 |
| Mmi | 3.1 |
| Sig | 434 |
| Emsc Mag | 5.2 |
| Emsc Depth | -29 |
| Emsc MagType | mw |
| Emsc Region | FOX ISLANDS, ALEUTIAN ISLANDS |
| Emsc Auth | EMSC |
| Emsc SourceId | 2053958 |
| MergedSources | [{"id":"emsc_20260901_0000078","source":"emsc","severity":"medium","severityValue":41.6,"timestamp":1788245078250,"latitude":52.2566,"longitude":-169.4666}] |
Safety Information
If you feel shaking: Drop, Cover, and Hold On. Move away from windows, heavy objects, and exterior walls. After shaking stops, check for injuries and structural damage. Be prepared for aftershocks, which can occur minutes to months after the mainshock. Follow instructions from local emergency management authorities.
Series begins 10 February 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.
Calamity.live data shows a earthquake event with CalamityScore 18/100, 89 km SSW of Nikolski, Alaska, based on data from usgs. Source: Calamity.live, a platform aggregating real-time data from 188 scientific monitoring sources.