M1.5 earthquake 20 km N of West Richland, Washington
A magnitude 1.5 earthquake struck 20 km N of West Richland, Washington on Sat, Apr 22, 2006, 5:39 AM PDT (12:39 UTC), 0 km (0 mi) below the surface.
A larger quake followed: M2.1 2 km N of Yakima, Washington. This one was a foreshock.
Map
Where this earthquake was located, with the others nearby. Select one for its page.
The earthquake
- Magnitude
- 1.5 (Md, duration), micro
- Magnitude from
- Pacific Northwest Seismic Network
- Local time
- UTC
- 2006-04-22 12:39:10 UTC
- Depth
- 0.0 km (0.0 mi), shallow
- Epicenter
- 46.486° N, 119.383° 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
- Magnitude uncertainty
- ±0.03
- Depth from
- From location
- Station coverage gap
- 71°
- Stations used
- 10
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 1 in the 30 days before it.
After
- 1.811 km NNE of Selah, Washington · 7440 days ago · 19 km deep · 89 km away
- 1.713 km NNE of Prosser, Washington · 7430 days ago · 2 km deep · 30 km away
- 1.521 km N of West Richland, Washington · 7426 days ago · 4 km deep · 1 km away
- 2.12 km N of Yakima, Washington · 7422 days ago · -1 km deep · 87 km away
Before
Earthquakes todayWashington earthquakesLive radar here
Sources
From the USGS Earthquake Hazards Program and its partner networks, event uw10697558. Read Sat, Oct 3, 2026, 3:06 AM UTC.