Washington earthquakes

M1.6 earthquake 11 km SW of Cascade Valley, Washington

A magnitude 1.6 earthquake struck 11 km SW of Cascade Valley, Washington on Wed, Mar 10, 1971, 3:21 PM PST (23:21 UTC), 0 km (0 mi) below the surface.

A larger quake followed: M2.8 3 km NW of Connell, Washington. This one was a foreshock.

Cascade Valley forecastMore in Washington

Map

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

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The earthquake

Magnitude
1.6 (md), micro
Local time
UTC
1971-03-10 23:21:53 UTC
Depth
0.3 km (0.2 mi), shallow
Epicenter
47.068° N, 119.450° 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 3.2 km horizontally
Magnitude uncertainty
±0.26
Depth from
From location
Station coverage gap
214°, poorly surrounded by stations
Stations used
7

Nearest places

Distance and direction from each place to the epicenter, with its forecast.

Nearby

Within 100 km, magnitude 1.5 and up: 21 in the 60 days after this one and 9 in the 30 days before it.

After

  1. 2.83 km NW of Connell, Washington · 20278 days ago · 1 km deep · 60 km away
  2. 1.83 km WNW of Connell, Washington · 20276 days ago · 1 km deep · 60 km away
  3. 2.37 km NNW of Entiat, Washington · 20276 days ago · 2 km deep · 96 km away
  4. 1.53 km NW of Connell, Washington · 20275 days ago · 0 km deep · 60 km away
  5. 1.93 km NW of Connell, Washington · 20275 days ago · 1 km deep · 60 km away
  6. 2.33 km NW of Connell, Washington · 20275 days ago · 3 km deep · 60 km away
  7. 1.73 km NW of Connell, Washington · 20273 days ago · 0 km deep · 60 km away
  8. 1.53 km NNW of Connell, Washington · 20271 days ago · 0 km deep · 60 km away
  9. 1.813 km SSW of Vantage, Washington · 20271 days ago · 0 km deep · 51 km away
  10. 1.812 km SE of Royal City, Washington · 20261 days ago · 2 km deep · 27 km away
  11. 1.611 km SSE of Royal City, Washington · 20259 days ago · 3 km deep · 29 km away
  12. 1.814 km W of Othello, Washington · 20259 days ago · 0 km deep · 28 km away
  13. 1.93 km NW of Connell, Washington · 20253 days ago · 1 km deep · 60 km away
  14. 2.33 km NW of Connell, Washington · 20253 days ago · 2 km deep · 60 km away
  15. 1.93 km NW of Connell, Washington · 20253 days ago · 2 km deep · 60 km away
  16. 1.53 km NW of Connell, Washington · 20251 days ago · 0 km deep · 60 km away
  17. 1.816 km WNW of Othello, Washington · 20240 days ago · 3 km deep · 20 km away
  18. 2.54 km NW of Waterville, Washington · 20239 days ago · 5 km deep · 84 km away
  19. 1.73 km NNW of Connell, Washington · 20236 days ago · 0 km deep · 60 km away
  20. 1.711 km SSW of Benton City, Washington · 20235 days ago · 6 km deep · 100 km away
  21. 1.922 km E of Desert Aire, Washington · 20231 days ago · 6 km deep · 48 km away

Before

  1. 1.511 km NNW of Basin City, Washington · 20293 days ago · 3 km deep · 46 km away
  2. 2.73 km NE of Entiat, Washington · 20295 days ago · 8 km deep · 89 km away
  3. 1.725 km E of Desert Aire, Washington · 20297 days ago · 4 km deep · 47 km away
  4. 1.8Washington · 20304 days ago · 1 km deep · 60 km away
  5. 1.810 km WSW of Cascade Valley, Washington · 20306 days ago · 1 km deep · 5 km away
  6. 1.517 km ESE of Royal City, Washington · 20306 days ago · 0 km deep · 26 km away
  7. 1.55 km ENE of Royal City, Washington · 20309 days ago · 0 km deep · 18 km away
  8. 1.65 km ENE of Royal City, Washington · 20310 days ago · 3 km deep · 19 km away
  9. 2.37 km E of Royal City, Washington · 20314 days ago · 1 km deep · 20 km away

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event uw10838698. Read Tue, Sep 22, 2026, 5:24 PM UTC.