M1.6 earthquake 14 km S of Mabton, Washington
A magnitude 1.6 earthquake struck 14 km S of Mabton, Washington on Sun, Aug 5, 1984, 6:02 AM PDT (13:02 UTC), 8 km (5 mi) below the surface.
A larger quake followed: M2.1 8 km SW of Tri-Cities, Washington. This one was a foreshock.
Map
Where this earthquake was located, with the others nearby. Select one for its page.
The earthquake
- Magnitude
- 1.6 (md), micro
- Local time
- UTC
- 1984-08-05 13:02:23 UTC
- Depth
- 8.0 km (4.9 mi), shallow
- Epicenter
- 46.086° N, 119.981° 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 13.6 km horizontally
- Magnitude uncertainty
- ±0.12
- Depth from
- Operator assigned
- Station coverage gap
- 252°, poorly surrounded by stations
- Stations used
- 4
Nearest places
Distance and direction from each place to the epicenter, with its forecast.
Nearby
Within 100 km, magnitude 1.5 and up: 2 in the 60 days after this one and 2 in the 30 days before it.
After
- 2.18 km SW of Tri-Cities, Washington · 15369 days ago · 0 km deep · 56 km away
- 1.72 km E of Highland, Washington · 15346 days ago · 14 km deep · 70 km away
Before
Earthquakes todayWashington earthquakesLive radar here
Sources
From the USGS Earthquake Hazards Program and its partner networks, event uw10177913. Read Tue, Sep 22, 2026, 11:27 PM UTC.