M2.5 earthquake 28 km S of Morton, Washington
A magnitude 2.5 earthquake struck 28 km S of Morton, Washington on Tue, Apr 18, 1972, 10:27 PM PST (06:27 UTC), 10 km (6 mi) below the surface.
A larger quake followed: M2.7 21 km SE of Carbonado, Washington. This one was a foreshock.
Map
Where this earthquake was located, with the others nearby. Select one for its page.
The earthquake
- Magnitude
- 2.5 (md), micro
- Local time
- UTC
- 1972-04-19 06:27:50 UTC
- Depth
- 10.3 km (6.4 mi), shallow
- Epicenter
- 46.305° N, 122.236° 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 4.2 km horizontally, 2.0 km in depth
- Magnitude uncertainty
- ±0.06
- Depth from
- Operator assigned
- Station coverage gap
- 283°, poorly surrounded by stations
- Stations used
- 6
Nearest places
Distance and direction from each place to the epicenter, with its forecast.
Nearby
Within 100 km, magnitude 1.5 and up: 10 in the 60 days after this one and 1 in the 30 days before it.
After
- 2.01 km SSW of La Grande, Washington · 19877 days ago · -1 km deep · 58 km away
- 2.07 km NE of Ashford, Washington · 19870 days ago · 12 km deep · 60 km away
- 1.913 km S of Carbonado, Washington · 19869 days ago · 4 km deep · 74 km away
- 2.09 km NNE of Packwood, Washington · 19864 days ago · -1 km deep · 64 km away
- 1.69 km ESE of Carbonado, Washington · 19848 days ago · 6 km deep · 86 km away
- 2.721 km SE of Carbonado, Washington · 19848 days ago · 4 km deep · 79 km away
- 3.08 km ENE of Ashford, Washington · 19839 days ago · 1 km deep · 59 km away
- 2.22 km SSW of Orting, Washington · 19838 days ago · 12 km deep · 86 km away
- 2.416 km WNW of Packwood, Washington · 19837 days ago · 7 km deep · 47 km away
- 2.414 km SSW of Alder, Washington · 19821 days ago · 11 km deep · 43 km away
Before
Earthquakes todayWashington earthquakesLive radar here
Sources
From the USGS Earthquake Hazards Program and its partner networks, event uw10852943. Read Tue, Sep 22, 2026, 8:58 PM UTC.