M1.9 earthquake 13 km N of Pasco, Washington
A magnitude 1.9 earthquake struck 13 km N of Pasco, Washington on Tue, May 11, 1971, 3:51 AM PDT (10:51 UTC), 4 km (2 mi) below the surface.
A larger quake followed: M2.2 3 km WNW of Connell, Washington. This one was a foreshock.
Map
Where this earthquake was located, with the others nearby. Select one for its page.
The earthquake
- Magnitude
- 1.9 (md), micro
- Local time
- UTC
- 1971-05-11 10:51:31 UTC
- Depth
- 4.0 km (2.5 mi), shallow
- Epicenter
- 46.361° N, 119.090° 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 0.5 km horizontally, 0.7 km in depth
- Magnitude uncertainty
- ±0.23
- Depth from
- From location
- Station coverage gap
- 219°, poorly surrounded by stations
- Stations used
- 6
Nearest places
Distance and direction from each place to the epicenter, with its forecast.
Nearby
Within 100 km, magnitude 1.5 and up: 6 in the 60 days after this one and 8 in the 30 days before it.
After
- 1.914 km N of Pasco, Washington · 20223 days ago · 5 km deep · 1 km away
- 2.23 km WNW of Connell, Washington · 20198 days ago · 0 km deep · 38 km away
- 2.23 km WSW of West Richland, Washington · 20183 days ago · 6 km deep · 25 km away
- 1.612 km N of West Richland, Washington · 20174 days ago · 5 km deep · 23 km away
- 1.74 km W of Connell, Washington · 20163 days ago · 0 km deep · 36 km away
- 1.57 km SSW of Royal City, Washington · 20163 days ago · 0 km deep · 70 km away
Before
- 1.922 km E of Desert Aire, Washington · 20231 days ago · 6 km deep · 53 km away
- 1.711 km SSW of Benton City, Washington · 20235 days ago · 6 km deep · 42 km away
- 1.73 km NNW of Connell, Washington · 20236 days ago · 0 km deep · 40 km away
- 1.816 km WNW of Othello, Washington · 20240 days ago · 3 km deep · 63 km away
- 1.53 km NW of Connell, Washington · 20251 days ago · 0 km deep · 39 km away
- 1.93 km NW of Connell, Washington · 20252 days ago · 2 km deep · 39 km away
- 2.33 km NW of Connell, Washington · 20252 days ago · 2 km deep · 39 km away
- 1.93 km NW of Connell, Washington · 20253 days ago · 1 km deep · 39 km away
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Sources
From the USGS Earthquake Hazards Program and its partner networks, event uw10839013. Read Tue, Sep 22, 2026, 10:45 AM UTC.