Observed earthquake
261 km SE of Chiniak, Alaska
Recent observationReported by 1 agency. Every solution below is that agency's own measurement, stored unaltered.
Magnitude
7.9mww
Depth
14 km
shallow
Origin time
2018-01-23 09:31:40 UTC
8 y ago
Epicentre
56.00°N, 149.17°W
A reporting agency set the tsunami evaluation flag for this earthquake. That flag means the event met criteria for tsunami assessment — it is not itself a tsunami warning. Official tsunami warnings come only from your national tsunami warning centre.
Agency solutions
The same earthquake as measured independently by each agency. Values are never averaged or rewritten.
| Agency | Magnitude | Depth | Origin time | Epicentre | Review status | Source record |
|---|---|---|---|---|---|---|
| USGSUnited States Geological Survey | M7.9 mww | 14 km | 2018-01-23 09:31:40 UTC | 56.00°N, 149.17°W | Reviewed by an analyst | us2000cmy3 ↗ |
Source: Earthquake data courtesy of the U.S. Geological Survey. · Retrieved: 2026-09-21 15:51:30 UTC
Felt reports
2,383 people submitted a felt report to United States Geological Survey · community intensity estimate 7.6 · instrumental intensity estimate 4.303.
Felt reports are crowd-sourced and reflect where people had internet access and chose to respond. They are not a complete map of who felt the earthquake.