M2.2 earthquake 2 km ESE of Union Gap, Washington
A magnitude 2.2 earthquake struck 2 km ESE of Union Gap, Washington on Sat, Mar 15, 1986, 10:39 PM PST (06:39 UTC), 7 km (4 mi) below the surface.
A larger quake followed: M2.6 11 km SW of Quincy, 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), micro
- Local time
- UTC
- 1986-03-16 06:39:55 UTC
- Depth
- 7.2 km (4.4 mi), shallow
- Epicenter
- 46.544° N, 120.441° 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 1.1 km horizontally, 0.6 km in depth
- Magnitude uncertainty
- ±0.09
- Depth from
- Operator assigned
- Station coverage gap
- 76°
- Stations used
- 39
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 2 in the 30 days before it.
After
- 1.83 km SE of Union Gap, Washington · 14800 days ago · 7 km deep · 1 km away
- 1.6Washington · 14791 days ago · 4 km deep · 94 km away
- 1.67 km WNW of Mattawa, Washington · 14788 days ago · 4 km deep · 43 km away
- 2.611 km SW of Quincy, Washington · 14776 days ago · 3 km deep · 78 km away
- 1.611 km NNW of Benton City, Washington · 14763 days ago · 17 km deep · 70 km away
- 1.623 km W of Cliffdell, Washington · 14759 days ago · 3 km deep · 84 km away
- 1.910 km SSW of Bickleton, Washington · 14759 days ago · 2 km deep · 69 km away
- 1.86 km NW of Mattawa, Washington · 14753 days ago · 0 km deep · 44 km away
Before
Earthquakes todayWashington earthquakesLive radar here
Sources
From the USGS Earthquake Hazards Program and its partner networks, event uw10204223. Read Tue, Sep 22, 2026, 9:39 PM UTC.