Earthquake M1.8 – 20 km E of Castle Rock, Washington
Origin Time (UTC)
11:04:09 27.07.26
Magnitude
1.8 ml
Agency
USGS
Coordinates
46.243332°N 122.644669°W
Energy Release
0.01 t
Weather
N/A
Depth
17.11 KM
A magnitude 1.8 earthquake struck 20 km E of Castle Rock, Washington on July 27, 2026. Based on seismic calculations, the event released an energy equivalent to approximately 0.01 t of TNT. The earthquake originated at a depth of 17.11 km below the surface.
Nearby Events
| Time | Mag | Epicenter | Explore |
|---|---|---|---|
|
22:01:28
27/07/2026
|
2.1
|
Puget Sound Region, Washington
48.2837°N 122.6018°W |
24.5 KM |
EMSC, USGS
|
MAP
EVENT
|
|
10:04:11
25/07/2026
|
2.4
|
2 km SW of Wauna, Washington
47.3642°N 122.6713°W |
27.61 KM |
EMSC, USGS
|
MAP
EVENT
|
|
22:30:59
22/07/2026
|
2.1
|
Washington
45.8413°N 122.4617°W |
0.6 KM |
EMSC, USGS
|
MAP
EVENT
|
|
09:13:52
22/07/2026
|
2.1
|
3 km E of Oak Harbor, Washington
48.2877°N 122.5950°W |
24.99 KM |
EMSC, USGS
|
MAP
EVENT
|
|
19:13:47
18/07/2026
|
2.2
|
38 km NE of Amboy, Washington
46.1992°N 122.1662°W |
4.73 KM |
EMSC, USGS
|
MAP
EVENT
|