Strong earthquake · September 17, 2026
M 6.5 Earthquake, 170 km W of Nikolski, Alaska
A magnitude 6.5 (mww) earthquake struck 170 km W of Nikolski, Alaska on September 17, 2026 at 14:19 UTC, at a depth of about 98 km (61 mi), according to the USGS. 8 people sent "Did You Feel It?" reports. The USGS PAGER alert level is green.
Updated Oct 22, 2026, 10:40 AM EDT (USGS snapshot)
This is not an early-warning system. For tsunami warnings see tsunami.gov; for emergencies follow local authorities.
| Magnitude | 6.5 mww (Strong) |
|---|---|
| Time (UTC) | |
| Local time at epicenter | Sep 17, 2026, 6:19 AM AKDT |
| U.S. Eastern Time | Sep 17, 2026, 10:19 AM EDT |
| Location | 170 km W of Nikolski, Alaska |
| Coordinates | 52.880° N, 171.397° W |
| Depth | 98.0 km (60.9 mi), intermediate |
| Felt reports | 8 "Did You Feel It?" responses · max reported intensity 3.4 |
| ShakeMap intensity | MMI 5 (estimated maximum) |
| Tsunami flag | Yes (see note below) |
| PAGER alert | Green |
| USGS event ID | us7000ti1p |
Source: USGS Earthquake Hazards Program, event us7000ti1p. Last updated by the USGS Oct 22, 2026, 14:40:41 UTC.
What the numbers mean
- Tsunami flag
- The USGS sets this flag for large events in oceanic regions. It does not mean a tsunami happened or will happen. Official tsunami warnings come from the NOAA Tsunami Warning Centers at tsunami.gov.
- PAGER alert
- An automatic USGS estimate of likely fatalities and economic losses: green (little or none), yellow, orange, or red (highest). It can change as more data arrives.
- Felt reports
- People who felt shaking can describe it through the USGS "Did You Feel It?" survey on the event page. The count grows for hours or days after an event.
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Other recent earthquakes within 300 km
| Magnitude | Location | Time | Depth |
|---|---|---|---|
| M 4.2 | 161 km SSE of Atka, Alaska | 0 sec ago | 10.0 km |
| M 3.4 | 110 km SSW of Nikolski, Alaska | 0 sec ago | 10.9 km |
| M 3.5 | 11 km NNE of Atka, Alaska | 0 sec ago | 206.3 km |
| M 2.8 | 29 km WNW of Atka, Alaska | 0 sec ago | 199.2 km |
| M 3.2 | 135 km SW of Nikolski, Alaska | 0 sec ago | 0.0 km |
| M 4.6 | 100 km NNW of Nikolski, Alaska | 0 sec ago | 230.5 km |
| M 2.8 | 77 km E of Nikolski, Alaska | 0 sec ago | 62.1 km |
| M 3.7 | 40 km SSE of Nikolski, Alaska | 0 sec ago | 131.1 km |
| M 2.9 | 121 km SSW of Nikolski, Alaska | 19 hr ago | 17.3 km |
| M 4.7 | 114 km SSW of Nikolski, Alaska | 7 days ago | 10.0 km |
| M 6.3(tsunami flag) | 92 km SSW of Nikolski, Alaska PAGER green | 49 days ago | 21.0 km |
| M 6.0(tsunami flag) | 96 km SW of Nikolski, Alaska PAGER green | 241 days ago | 14.0 km |
After an earthquake
Expect aftershocks. If you are near the coast and feel strong or long shaking, move to high ground right away without waiting for an official warning. Check on neighbors and follow instructions from local emergency officials.
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