M 4.0 Earthquake
136 km SSE of Atka, Alaska
Geographic Context
This earthquake event occurred at coordinates 51.11°, -173.27°.
Event Assessment
This event is an earthquake of magnitude 4.0 at 10 km depth. Calamity.live has classified it as "low" severity with a severity value of 24. The computed Calamity Score is 0 out of 100, suggesting contained impact at this time. Data for this event was sourced from usgs, one of the 250 scientific monitoring sources aggregated by Calamity.live.
Regional Monitoring Context
This earthquake event is being tracked through Calamity.live's global monitoring network, which aggregates data from 250 scientific sources. Real-time monitoring and multi-source verification help ensure data accuracy and timely reporting of significant natural hazard events worldwide.
Event Data
| Type | Earthquake |
| Severity | low |
| Severity Value | 24 |
| Calamity Score | 0 / 100 |
| Confidence | 67% |
| Coordinates | 51.1137, -173.2660 |
| Timestamp | 2026-07-25T23:31:43.633Z |
| Source | https://earthquake.usgs.gov/earthquakes/eventpage/us7000t3dn |
Score Breakdown
Technical Details
| Mag | 4 |
| Depth | 10 |
| Tsunami | false |
| Mmi | 3.168 |
| Sig | 246 |
| Emsc Mag | 4 |
| Emsc Depth | -10 |
| Emsc MagType | mb |
| Emsc Region | ANDREANOF ISLANDS, ALEUTIAN IS. |
| Emsc Auth | EMSC |
| Emsc SourceId | 2032267 |
| MergedSources | [{"id":"emsc_20260725_0000368","source":"emsc","severity":"low","severityValue":24,"timestamp":1785022302180,"latitude":51.1057,"longitude":-173.2273}] |
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.
This data is aggregated algorithmically from scientific sources. Not a replacement for official emergency warnings.
Calamity.live data shows a earthquake event with CalamityScore 0/100, based on data from usgs. Source: Calamity.live, a platform aggregating real-time data from 197 scientific monitoring sources.