M1.6 earthquake 11 km ESE of Royal City, Washington
A magnitude 1.6 earthquake struck 11 km ESE of Royal City, Washington on Sat, Oct 23, 1982, 4:14 PM PDT (23:14 UTC), 14 km (8 mi) below the surface.
A larger quake followed: M2.3 15 km SE of Mansfield, Washington. This one was a foreshock.
Map
Where this earthquake was located, with the others nearby. Select one for its page.
The earthquake
- Magnitude
- 1.6 (md), micro
- Local time
- UTC
- 1982-10-23 23:14:28 UTC
- Depth
- 13.6 km (8.4 mi), shallow
- Epicenter
- 46.876° N, 119.480° 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, 0.5 km in depth
- Magnitude uncertainty
- ±0.06
- Depth from
- From location
- Station coverage gap
- 61°
- Stations used
- 23
Nearest places
Distance and direction from each place to the epicenter, with its forecast.
Nearby
Within 100 km, magnitude 1.5 and up: 6 in the 60 days after this one and 0 in the 30 days before it.
After
- 2.315 km SE of Mansfield, Washington · 16039 days ago · 0 km deep · 95 km away
- 2.312 km ESE of Royal City, Washington · 16025 days ago · 14 km deep · 1 km away
- 2.312 km E of Royal City, Washington · 16024 days ago · 14 km deep · 1 km away
- 1.913 km E of Royal City, Washington · 16011 days ago · 14 km deep · 1 km away
- 1.75 km SSE of Entiat, Washington · 15999 days ago · 0 km deep · 99 km away
- 1.98 km SW of Royal City, Washington · 15998 days ago · 1 km deep · 17 km away
Earthquakes todayWashington earthquakesLive radar here
Sources
From the USGS Earthquake Hazards Program and its partner networks, event uw10149413. Read Tue, Sep 22, 2026, 9:20 PM UTC.