M3.8 earthquake 20 km E of Castle Rock, Washington
A magnitude 3.8 earthquake struck 20 km E of Castle Rock, Washington at Sep 5, 7:09 AM ET, 18 km deep, minor – felt by people near the epicenter. 1,025 people reported feeling it.
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| Magnitude | 3.8 ml |
| Time | 5 Sept 2026, 11:09 UTC |
| Location | 46.246°, -122.642° – 20 km E of Castle Rock, Washington |
| Depth | 17.7 km |
| Felt reports | 1025 |
| Max. estimated intensity (MMI) | 3.7 |
| USGS event | uw714095342 |
Other earthquakes nearby this year
| Mag. | Where | When (ET) | Depth | Felt |
|---|---|---|---|---|
| 2.6 | 5 km WSW of Pe Ell, Washington | Dec 19, 6:29 PM 301 d ago | 40 km | 11 reports |
| 2.6 | 23 km N of Trout Lake, Washington | Sep 27, 8:12 PM 19 d ago | -1 km | 2 reports |
| 2.5 | 7 km SE of Mineral, Washington | Mar 16, 11:50 PM 214 d ago | 21 km | 3 reports |
| 2.5 | 16 km NE of Ashford, Washington | Dec 18, 10:32 PM 302 d ago | 7 km | 1 report |
| 2.4 | 8 km E of Ashford, Washington | Aug 22, 6:54 AM 55 d ago | 4 km | 3 reports |
| 2.4 | 5 km SW of Packwood, Washington | Dec 1, 10:56 AM 319 d ago | 11 km | 3 reports |
| 2.4 | 2 km SW of Ashford, Washington | Oct 5, 10:02 PM 11 d ago | 8 km | 10 reports |
| 2.4 | 10 km ESE of Pe Ell, Washington | Mar 2, 8:19 AM 228 d ago | 48 km | 1 report |
| 2.3 | 5 km SW of Packwood, Washington | Apr 2, 2:57 AM 198 d ago | 9 km | 4 reports |
| 2.3 | 38 km SSE of Morton, Washington | Oct 14, 10:37 PM 367 d ago | 9 km | – |
| 2.3 | 17 km NNE of Ashford, Washington | Mar 12, 5:33 AM 218 d ago | 12 km | – |
| 2.3 | 37 km NNE of Amboy, Washington | Aug 16, 12:44 PM 61 d ago | -2 km | – |
About this earthquake
How strong was the 20 km E of Castle Rock, Washington earthquake?
Magnitude 3.8 (ml), minor – felt by people near the epicenter. Depth 18 km. Strongest estimated shaking: intensity 3.7 on the Modified Mercalli scale.
Was it felt?
1,025 people reported feeling it to the USGS "Did You Feel It?" survey; the highest reported intensity was 4.3.
Were there aftershocks?
No earthquakes within 100 km have followed so far in our records.
More
Source: U.S. Geological Survey (USGS) earthquake catalog, real-time feeds and FDSN event service; magnitudes and locations are revised by seismologists for hours after an event. Times are Eastern (ET) unless marked UTC. Not an alert service: for warnings follow local authorities and tsunami centers.