M2.1 earthquake 8 km SW of Tri-Cities, Washington
A magnitude 2.1 earthquake struck 8 km SW of Tri-Cities, Washington on Fri, Aug 24, 1984, 11:09 AM PDT (18:09 UTC), 0 km (0 mi) below the surface.
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
- 1984-08-24 18:09:56 UTC
- Depth
- -0.4 km (-0.2 mi), shallow
- Epicenter
- 46.180° N, 119.263° 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 0.1 km horizontally, 0.2 km in depth
- Magnitude uncertainty
- ±0.12
- Depth from
- Operator assigned
- Station coverage gap
- 151°
- Stations used
- 8
Nearest places
Distance and direction from each place to the epicenter, with its forecast.
Nearby
Within 100 km, magnitude 1.5 and up: 3 in the 60 days after this one and 1 in the 30 days before it.
After
- 1.714 km SW of Cascade Valley, Washington · 15360 days ago · 0 km deep · 96 km away
- 1.72 km E of Highland, Washington · 15353 days ago · 14 km deep · 15 km away
- 1.617 km SE of Prosser, Washington · 15334 days ago · 0 km deep · 27 km away
Before
Earthquakes todayWashington earthquakesLive radar here
Sources
From the USGS Earthquake Hazards Program and its partner networks, event uw10181703. Read Tue, Sep 29, 2026, 6:34 PM UTC.