M2.1 earthquake 21 km N of Mission, Canada
A magnitude 2.1 earthquake struck 21 km N of Mission, Canada on Thu, Apr 18, 1991, 7:56 AM PDT (14:56 UTC), 5 km (3 mi) below the surface.
A larger quake followed: M2.5 2 km NNE of Deming, Washington. This one was a foreshock.
Map
Where this earthquake was located, with the others nearby. Select one for its page.
The earthquake
- Magnitude
- 2.1 (Md, duration), micro
- Magnitude from
- Pacific Northwest Seismic Network
- Local time
- UTC
- 1991-04-18 14:56:07 UTC
- Depth
- 4.8 km (3.0 mi), shallow
- Epicenter
- 49.324° N, 122.298° W
- Region
- Canada
- 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 2.1 km horizontally, 4.5 km in depth
- Magnitude uncertainty
- ±0.09
- Depth from
- From location
- Station coverage gap
- 177°
- Stations used
- 15
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 3 in the 30 days before it.
After
- 2.05 km W of Concrete, Washington · 12953 days ago · 3 km deep · 95 km away
- 1.79 km SW of Everson, Washington · 12947 days ago · 15 km deep · 52 km away
- 1.5Washington · 12939 days ago · -1 km deep · 96 km away
- 1.66 km SSE of Acme, WA · 12915 days ago · 20 km deep · 74 km away
- 2.52 km NNE of Deming, Washington · 12909 days ago · -1 km deep · 54 km away
Before
Earthquakes todayCanada earthquakesLive radar here
Sources
From the USGS Earthquake Hazards Program and its partner networks, event uw10273868. Read Sun, Oct 4, 2026, 10:17 PM UTC.