M1.9 earthquake 14 km N of Pasco, Washington
A magnitude 1.9 earthquake struck 14 km N of Pasco, Washington on Tue, May 11, 1971, 4:48 AM PDT (11:48 UTC), 5 km (3 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 11:48:00 UTC
- Depth
- 4.8 km (3.0 mi), shallow
- Epicenter
- 46.366° N, 119.089° 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 0.7 km horizontally, 0.5 km in depth
- Magnitude uncertainty
- ±0.23
- Depth from
- From location
- Station coverage gap
- 207°, poorly surrounded by stations
- Stations used
- 7
Nearest places
Distance and direction from each place to the epicenter, with its forecast.
Nearby
Within 100 km, magnitude 1.5 and up: 5 in the 60 days after this one and 9 in the 30 days before it.
After
- 2.23 km WNW of Connell, Washington · 20199 days ago · 0 km deep · 38 km away
- 2.23 km WSW of West Richland, Washington · 20184 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 · 20164 days ago · 0 km deep · 36 km away
- 1.57 km SSW of Royal City, Washington · 20164 days ago · 0 km deep · 70 km away
Before
- 1.913 km N of Pasco, Washington · 20224 days ago · 4 km deep · 1 km away
- 1.922 km E of Desert Aire, Washington · 20231 days ago · 6 km deep · 52 km away
- 1.711 km SSW of Benton City, Washington · 20236 days ago · 6 km deep · 43 km away
- 1.73 km NNW of Connell, Washington · 20237 days ago · 0 km deep · 39 km away
- 1.816 km WNW of Othello, Washington · 20241 days ago · 3 km deep · 62 km away
- 1.53 km NW of Connell, Washington · 20252 days ago · 0 km deep · 39 km away
- 1.93 km NW of Connell, Washington · 20253 days ago · 2 km deep · 39 km away
- 2.33 km NW of Connell, Washington · 20253 days ago · 2 km deep · 39 km away
- 1.93 km NW of Connell, Washington · 20253 days ago · 1 km deep · 38 km away
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Sources
From the USGS Earthquake Hazards Program and its partner networks, event uw10839018. Read Wed, Sep 23, 2026, 3:32 AM UTC.