M2.1 earthquake 13 km SSE of Wallula, Washington
A magnitude 2.1 earthquake struck 13 km SSE of Wallula, Washington on Sun, Nov 20, 1983, 12:28 AM PST (08:28 UTC), 3 km (2 mi) below the surface.
A larger quake followed: M2.7 1 km ESE of Waitsburg, Washington. This one was a foreshock.
Map
Where this earthquake was located, with the others nearby. Select one for its page.
The earthquake
- Magnitude
- 2.1 (md), micro
- Local time
- UTC
- 1983-11-20 08:28:02 UTC
- Depth
- 2.9 km (1.8 mi), shallow
- Epicenter
- 45.974° N, 118.844° W
- Region
- Washington
- Tsunami flag
- No
- Status
- Reviewed by a seismologist
Did you feel it?
No one has reported feeling this quake to the USGS.
How well it is located
Reviewed by a seismologist.
- Location uncertainty
- About 3.0 km horizontally, 3.8 km in depth
- Magnitude uncertainty
- ±0.15
- Depth from
- From location
- Station coverage gap
- 168°
- Stations used
- 7
Nearest places
Distance and direction from each place to the epicenter, with its forecast.
Nearby
Within 100 km, magnitude 1.5 and up: 4 in the 60 days after this one and 0 in the 30 days before it.
After
- 1.815 km WSW of Highland, Washington · 15640 days ago · 10 km deep · 35 km away
- 1.711 km ESE of Prosser, Washington · 15621 days ago · 5 km deep · 64 km away
- 1.530 km ESE of Desert Aire, Washington · 15620 days ago · 15 km deep · 86 km away
- 2.71 km ESE of Waitsburg, Washington · 15593 days ago · 0 km deep · 63 km away
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Sources
From the USGS Earthquake Hazards Program and its partner networks, event uw10168913. Read Wed, Sep 23, 2026, 3:38 AM UTC.