M1.9 earthquake 13 km NE of Mattawa, Washington
A magnitude 1.9 earthquake struck 13 km NE of Mattawa, Washington on Wed, Jul 27, 1983, 7:24 AM PDT (14:24 UTC), 1 km (1 mi) below the surface.
A larger quake followed: M2.3 9 km W of Othello, Washington. This one was a foreshock.
Map
Where this earthquake was located, with the others nearby. Select one for its page.
The earthquake
- Magnitude
- 1.9 (md), micro
- Local time
- UTC
- 1983-07-27 14:24:36 UTC
- Depth
- 1.0 km (0.6 mi), shallow
- Epicenter
- 46.835° N, 119.796° 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 0.4 km horizontally, 0.8 km in depth
- Magnitude uncertainty
- ±0.04
- Depth from
- From location
- Station coverage gap
- 104°
- Stations used
- 9
Nearest places
Distance and direction from each place to the epicenter, with its forecast.
Nearby
Within 100 km, magnitude 1.5 and up: 8 in the 60 days after this one and 8 in the 30 days before it.
After
- 1.511 km WSW of Cashmere, Washington · 15757 days ago · 0 km deep · 96 km away
- 1.64 km S of Entiat, Washington · 15753 days ago · 0 km deep · 94 km away
- 2.39 km W of Othello, Washington · 15746 days ago · 1 km deep · 38 km away
- 2.010 km W of Othello, Washington · 15746 days ago · 0 km deep · 37 km away
- 2.07 km S of Richland, Washington · 15746 days ago · 4 km deep · 78 km away
- 2.07 km S of Richland, Washington · 15746 days ago · 0 km deep · 79 km away
- 1.55 km WSW of Waterville, Washington · 15708 days ago · 0 km deep · 92 km away
- 2.15 km SSE of Entiat, Washington · 15704 days ago · 5 km deep · 93 km away
Before
- 2.56 km NNW of Waterville, Washington · 15766 days ago · 0 km deep · 99 km away
- 2.09 km SW of Royal City, Washington · 15768 days ago · 0 km deep · 7 km away
- 2.212 km SW of Nile, Washington · 15770 days ago · 4 km deep · 95 km away
- 1.74 km NNE of Waterville, Washington · 15785 days ago · 6 km deep · 97 km away
- 1.723 km NE of Sunnyside, Washington · 15786 days ago · 18 km deep · 44 km away
- 1.81 km WSW of Entiat, Washington · 15786 days ago · 4 km deep · 99 km away
- 2.18 km SSE of Leavenworth, Washington · 15787 days ago · 8 km deep · 99 km away
- 1.86 km NNW of Waterville, Washington · 15790 days ago · 3 km deep · 99 km away
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Sources
From the USGS Earthquake Hazards Program and its partner networks, event uw10163068. Read Tue, Sep 22, 2026, 9:39 PM UTC.