M2.2 earthquake 3 km SSE of Manson, Washington
A magnitude 2.2 earthquake struck 3 km SSE of Manson, Washington on Fri, Sep 29, 1972, 9:09 PM PDT (04:09 UTC), 7 km (4 mi) below the surface.
A larger quake followed: M2.3 9 km NW of Entiat, Washington. This one was a foreshock.
Map
Where this earthquake was located, with the others nearby. Select one for its page.
The earthquake
- Magnitude
- 2.2 (Md, duration), micro
- Magnitude from
- Pacific Northwest Seismic Network
- Local time
- UTC
- 1972-09-30 04:09:28 UTC
- Depth
- 7.2 km (4.5 mi), shallow
- Epicenter
- 47.854° N, 120.138° 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 2.5 km horizontally, 9.4 km in depth
- Magnitude uncertainty
- ±0.26
- Depth from
- Operator assigned
- Station coverage gap
- 306°, poorly surrounded by stations
- Stations used
- 8
Nearest places
Distance and direction from each place to the epicenter, with its forecast.
Nearby
Within 100 km, magnitude 1.5 and up: 2 in the 60 days after this one and 0 in the 30 days before it.
After
Earthquakes todayWashington earthquakesLive radar here
Sources
From the USGS Earthquake Hazards Program and its partner networks, event uw10854278. Read Thu, Oct 1, 2026, 3:30 AM UTC.