M2.5 earthquake 5 km E of Wallula, Washington
A magnitude 2.5 earthquake struck 5 km E of Wallula, Washington on Thu, Apr 4, 1991, 9:14 AM PST (17:14 UTC), 9 km (6 mi) below the surface.
A larger quake followed: M2.9 14 km SE of Desert Aire, Washington. This one was a foreshock.
Map
Where this earthquake was located, with the others nearby. Select one for its page.
The earthquake
- Magnitude
- 2.5 (Md, duration), micro
- Magnitude from
- Pacific Northwest Seismic Network
- Local time
- UTC
- 1991-04-04 17:14:50 UTC
- Depth
- 9.4 km (5.8 mi), shallow
- Epicenter
- 46.082° N, 118.834° 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 1.1 km horizontally, 1.2 km in depth
- Magnitude uncertainty
- ±0.07
- Depth from
- From location
- Station coverage gap
- 127°
- Stations used
- 21
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 2 in the 30 days before it.
After
- 2.914 km SE of Desert Aire, Washington · 12955 days ago · 18 km deep · 92 km away
- 1.8Washington · 12954 days ago · 17 km deep · 92 km away
- 2.214 km SE of Desert Aire, Washington · 12953 days ago · 17 km deep · 92 km away
- 1.616 km E of Mattawa, Washington · 12933 days ago · 0 km deep · 98 km away
Before
Earthquakes todayWashington earthquakesLive radar here
Sources
From the USGS Earthquake Hazards Program and its partner networks, event uw10271988. Read Sun, Oct 4, 2026, 6:01 AM UTC.