Washington earthquakes

M2.5 earthquake 15 km NNE of Richland, Washington

A magnitude 2.5 earthquake struck 15 km NNE of Richland, Washington on Sun, Oct 27, 1985, 2:14 PM PST (22:14 UTC), 1 km (1 mi) below the surface.

A larger quake followed: M3.2 8 km NNW of Moses Lake North, Washington. This one was a foreshock.

Richland forecastMore in Washington

Map

Where this earthquake was located, with the others nearby. Select one for its page.

Open the live map with earthquakes

The earthquake

Magnitude
2.5 (Md, duration), micro
Magnitude from
Pacific Northwest Seismic Network
Local time
UTC
1985-10-27 22:14:42 UTC
Depth
0.9 km (0.6 mi), shallow
Epicenter
46.410° N, 119.181° W
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 0.7 km horizontally, 1.1 km in depth
Magnitude uncertainty
±0.09
Depth from
From location
Station coverage gap
76°
Stations used
27

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 10 in the 30 days before it.

After

  1. 2.814 km NNE of Richland, Washington · 14950 days ago · 2 km deep · 1 km away
  2. 3.28 km NNW of Moses Lake North, Washington · 14924 days ago · 20 km deep · 96 km away
  3. 1.623 km SSE of Kittitas, Washington · 14915 days ago · 1 km deep · 95 km away
  4. 1.823 km SSE of Kittitas, Washington · 14914 days ago · 2 km deep · 95 km away
  5. 2.913 km ESE of Prosser, Washington · 14913 days ago · 1 km deep · 42 km away
  6. 2.64 km NE of Royal City, Washington · 14913 days ago · 0 km deep · 66 km away
  7. 2.310 km ESE of Royal City, Washington · 14910 days ago · 0 km deep · 55 km away
  8. 2.65 km ENE of Umapine, Oregon · 14890 days ago · 3 km deep · 75 km away

Before

  1. 1.723 km NE of Terrace Heights, Washington · 14951 days ago · 3 km deep · 92 km away
  2. 1.912 km NW of Mattawa, Washington · 14956 days ago · 4 km deep · 78 km away
  3. 1.914 km SSW of Vantage, Washington · 14956 days ago · 0 km deep · 81 km away
  4. 1.822 km NNE of Terrace Heights, Washington · 14957 days ago · 2 km deep · 96 km away
  5. 1.711 km S of Toppenish, Washington · 14962 days ago · -1 km deep · 89 km away
  6. 2.123 km NNE of Terrace Heights, Washington · 14963 days ago · 2 km deep · 95 km away
  7. 1.622 km NNE of Terrace Heights, Washington · 14963 days ago · 0 km deep · 94 km away
  8. 2.512 km WNW of Mattawa, Washington · 14977 days ago · 1 km deep · 79 km away
  9. 3.012 km WNW of Mattawa, Washington · 14977 days ago · 1 km deep · 78 km away
  10. 3.012 km WNW of Mattawa, Washington · 14977 days ago · 1 km deep · 79 km away

Earthquakes todayWashington earthquakesLive radar here

Sources

From the USGS Earthquake Hazards Program and its partner networks, event uw10201543. Read Sat, Oct 3, 2026, 3:59 AM UTC.