M1.9 earthquake 23 km NW of Bickleton, Washington
A magnitude 1.9 earthquake struck 23 km NW of Bickleton, Washington on Mon, Apr 22, 1991, 11:45 AM PDT (18:45 UTC), 4 km (3 mi) below the surface.
A larger quake followed: M2.5 7 km SE of Kittitas, 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, duration), micro
- Magnitude from
- Pacific Northwest Seismic Network
- Local time
- UTC
- 1991-04-22 18:45:21 UTC
- Depth
- 4.2 km (2.6 mi), shallow
- Epicenter
- 46.164° N, 120.490° 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 1.0 km horizontally, 1.0 km in depth
- Magnitude uncertainty
- ±0.08
- Depth from
- Operator assigned
- Station coverage gap
- 50°
- Stations used
- 24
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 7 in the 30 days before it.
After
- 1.515 km E of Kittitas, Washington · 12941 days ago · 8 km deep · 92 km away
- 1.616 km E of Mattawa, Washington · 12934 days ago · 0 km deep · 89 km away
- 1.628 km SW of White Swan, Washington · 12913 days ago · -1 km deep · 39 km away
- 1.98 km SSW of Prosser, Washington · 12904 days ago · 20 km deep · 54 km away
- 2.57 km SE of Kittitas, Washington · 12890 days ago · 3 km deep · 86 km away
- 1.57 km SE of Kittitas, Washington · 12890 days ago · 4 km deep · 86 km away
Before
- 1.633 km ESE of Packwood, Washington · 12951 days ago · -1 km deep · 70 km away
- 2.812 km NNE of Condon, Oregon · 12952 days ago · 13 km deep · 95 km away
- 2.214 km SE of Desert Aire, Washington · 12953 days ago · 17 km deep · 73 km away
- 1.8Washington · 12954 days ago · 17 km deep · 73 km away
- 2.914 km SE of Desert Aire, Washington · 12955 days ago · 18 km deep · 73 km away
- 1.69 km SSW of Prosser, Washington · 12976 days ago · 20 km deep · 54 km away
- 2.59 km SSW of Prosser, Washington · 12977 days ago · 21 km deep · 53 km away
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Sources
From the USGS Earthquake Hazards Program and its partner networks, event uw10274043. Read Sun, Oct 4, 2026, 4:26 PM UTC.