4.0
Earthquake Details: 161 km S of Nikolski, Alaska
Oct 19, 2026, 05:08:40
- Depth
- 10 km
- Felt reports
- No data
Source: USGSUpdated: Oct 19, 2026, 04:31 PM UTC
A magnitude 4.0 earthquake occurred on Oct 19, 2026 at 05:08:40. Epicenter: 161 km S of Nikolski, Alaska. Reported depth: 10 km.
Tsunami information
Loading data...
Time & depth
- Local time
- Oct 18, 2026, 18:08:40 GMT-11
- UTC
- Oct 19, 2026, 05:08:40 UTC
10 km · Shallow-focus
Less than 70 km deep. Shaking is often stronger near the epicentre.
Loading map...
Nearby earthquakes · 12
M3.4217 km SSE of Atka, AlaskaBeforeM3.735 km SW of False Pass, AlaskaBeforeM2.259 km WSW of False Pass, AlaskaBeforeM2.4109 km SSE of False Pass, AlaskaBeforeM2.280 km S of Unalaska, AlaskaBeforeM3.072 km SE of Akutan, AlaskaBeforeM3.886 km SSW of Unalaska, AlaskaBeforeM2.395 km SSW of Unalaska, AlaskaBeforeM2.068 km E of Adak, AlaskaBeforeM2.5124 km SE of Unalaska, AlaskaBeforeM3.7123 km SSW of Nikolski, AlaskaAfterM3.687 km SE of Unalaska, AlaskaAfter
Agency measurements
Agencies may use different observations and magnitude scales, and initial estimates can change.
- USGSM 4
us6000u3a4
- Depth:
- 10 km
- Time:
- Updated:
- Oct 19, 2026, 04:31 PM UTC
Technical Details
Depth10 km
Significance246
Latitude51.5152
Longitude-168.4220
Event IDus6000u3a4
Magnitude4.0
Updated:Oct 19, 2026, 16:31:22 UTC
Regional Seismicity
View recent seismic activity near this event:
External Resources
Earthquake information is automatically aggregated from the official seismic agencies listed below. Preliminary measurements can change as agencies review an event; use local emergency authorities for safety decisions. Latest successful data update: Oct 19, 2026, 16:31 UTC.
Data sources:
- USGS — Credit: U.S. Geological Survey.
- EMSC — Credit: EMSC/CSEM. Event catalogue data are provided under CC BY 4.0. CC BY 4.0
- JMA — Source: Japan Meteorological Agency (JMA).
- Geoscience Australia — Based on Australian Earthquakes data by Geoscience Australia. © Commonwealth of Australia. Licensed under CC BY 4.0; the section 5 disclaimer applies. CC BY 4.0
- GeoNet — We acknowledge the New Zealand GeoNet programme and its sponsors NHC, Earth Sciences NZ, LINZ, NEMA and MBIE for providing earthquake data.