M3.1 earthquake 10 km SW of Pateros, Washington
A magnitude 3.1 earthquake struck 10 km SW of Pateros, Washington on Thu, Feb 14, 1991, 11:00 AM PST (19:00 UTC), 7 km (4 mi) below the surface.
A larger quake followed: M3.9 4 km SE of Pateros, Washington. This one was a foreshock.
Map
Where this earthquake was located, with the others nearby. Select one for its page.
The earthquake
- Magnitude
- 3.1 (Md, duration), minor
- Magnitude from
- Pacific Northwest Seismic Network
- Local time
- UTC
- 1991-02-14 19:00:42 UTC
- Depth
- 6.8 km (4.2 mi), shallow
- Epicenter
- 47.974° N, 119.991° W
- Region
- Washington
- Tsunami flag
- No
- Status
- Reviewed by a seismologist
Magnitude estimates
Different scales measure different things and differ by a few tenths. The USGS marks one as preferred, and it is the one this page uses.
| Mag. | Scale | Computed by | Notes |
|---|---|---|---|
| 3.1 | Md, duration | Pacific Northwest Seismic Network | Preferred · Final · ±0.06 · 11 stations |
| 3.1 | Md, duration | USGS National Earthquake Information Center | Reviewed |
What happened
The USGS’s account of the effects of this earthquake.
CL 3.1 (SEA). Felt at Chelan.
From the USGS event page for uw10271003. U.S. Geological Survey text and figures are in the public domain.
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 0.9 km horizontally, 1.6 km in depth
- Magnitude uncertainty
- ±0.06
- Depth from
- From location
- Station coverage gap
- 150°
- Stations used
- 26
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 4 in the 30 days before it.
After
- 1.78 km N of Entiat, Washington · 13014 days ago · 0 km deep · 30 km away
- 3.38 km W of Entiat, Washington · 12973 days ago · -1 km deep · 41 km away
- 2.713 km W of Mansfield, Washington · 12967 days ago · 0 km deep · 21 km away
- 1.68 km SSW of Chelan Falls, Washington · 12963 days ago · 3 km deep · 28 km away
- 3.94 km SE of Pateros, Washington · 12955 days ago · 11 km deep · 11 km away
Before
- 2.56 km N of Waterville, Washington · 13025 days ago · 4 km deep · 30 km away
- 2.714 km NW of Conconully, Washington · 13026 days ago · -1 km deep · 73 km away
- 2.59 km WSW of Chelan Falls, Washington · 13029 days ago · 6 km deep · 25 km away
- 2.413 km W of Entiat, Washington · 13042 days ago · -1 km deep · 45 km away
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Sources
From the USGS Earthquake Hazards Program and its partner networks, event uw10271003 (also filed as usp0004my0). Read Fri, Oct 2, 2026, 9:40 PM UTC.