M1.5 earthquake 14 km E of Mansfield, Washington
A magnitude 1.5 earthquake struck 14 km E of Mansfield, Washington on Fri, Jul 11, 1975, 12:28 AM PDT (07:28 UTC), 0 km (0 mi) below the surface.
A larger quake followed: M2.7 3 km N of Rock Island, Washington. This one was a foreshock.
Map
Where this earthquake was located, with the others nearby. Select one for its page.
The earthquake
- Magnitude
- 1.5 (md), micro
- Local time
- UTC
- 1975-07-11 07:28:35 UTC
- Depth
- -0.2 km (-0.1 mi), shallow
- Epicenter
- 47.786° N, 119.441° 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 0.9 km horizontally
- Magnitude uncertainty
- ±0.08
- Depth from
- From location
- Station coverage gap
- 142°
- Stations used
- 5
Nearest places
Distance and direction from each place to the epicenter, with its forecast.
Nearby
Within 100 km, magnitude 1.5 and up: 7 in the 60 days after this one and 1 in the 30 days before it.
After
- 2.73 km N of Rock Island, Washington · 18703 days ago · 6 km deep · 68 km away
- 2.63 km ENE of Entiat, Washington · 18702 days ago · 2 km deep · 55 km away
- 1.83 km WNW of Waterville, Washington · 18682 days ago · 0 km deep · 52 km away
- 1.75 km WSW of Entiat, Washington · 18679 days ago · 0 km deep · 65 km away
- 1.810 km W of Quincy, Washington · 18669 days ago · 14 km deep · 73 km away
- 2.16 km SW of Chelan Falls, Washington · 18659 days ago · 3 km deep · 46 km away
- 2.512 km NNE of Creston, Washington · 18659 days ago · 8 km deep · 74 km away
Before
Earthquakes todayWashington earthquakesLive radar here
Sources
From the USGS Earthquake Hazards Program and its partner networks, event uw10861273. Read Wed, Sep 30, 2026, 3:48 PM UTC.