Washington earthquakes

M1.7 earthquake 21 km NW of Granite Falls, Washington

A magnitude 1.7 earthquake struck 21 km NW of Granite Falls, Washington on Sat, Jul 20, 1985, 5:22 AM PDT (12:22 UTC), 0 km (0 mi) below the surface.

A larger quake followed: M2.7 14 km ESE of Mansfield, Washington. This one was a foreshock.

Granite Falls 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
1.7 (md), micro
Local time
UTC
1985-07-20 12:22:24 UTC
Depth
-0.3 km (-0.2 mi), shallow
Epicenter
48.038° N, 120.401° 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 1.3 km horizontally, 2.3 km in depth
Magnitude uncertainty
±0.17
Depth from
From location
Station coverage gap
245°, poorly surrounded by stations
Stations used
4

Nearest places

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

Nearby

Within 100 km, magnitude 1.5 and up: 20 in the 60 days after this one and 5 in the 30 days before it.

After

  1. 1.58 km WSW of Entiat, Washington · 15046 days ago · -1 km deep · 45 km away
  2. 2.514 km ESE of Mansfield, Washington · 15044 days ago · 0 km deep · 77 km away
  3. 2.714 km ESE of Mansfield, Washington · 15042 days ago · -1 km deep · 77 km away
  4. 1.5Washington · 15041 days ago · 0 km deep · 39 km away
  5. 1.529 km NW of Leavenworth, Washington · 15041 days ago · 0 km deep · 45 km away
  6. 2.110 km WNW of Entiat, Washington · 15038 days ago · 6 km deep · 35 km away
  7. 2.35 km E of Entiat, Washington · 15036 days ago · 3 km deep · 45 km away
  8. 1.512 km ENE of Mansfield, Washington · 15034 days ago · 0 km deep · 72 km away
  9. 1.829 km NW of Leavenworth, Washington · 15028 days ago · -1 km deep · 44 km away
  10. 1.61 km N of Chelan Falls, Washington · 15026 days ago · 0 km deep · 40 km away
  11. 1.77 km N of Methow, Washington · 15013 days ago · -1 km deep · 35 km away
  12. 2.1Washington · 15008 days ago · 2 km deep · 42 km away
  13. 1.913 km E of Mansfield, Washington · 15004 days ago · -1 km deep · 75 km away
  14. 2.415 km ESE of Mansfield, Washington · 15003 days ago · -1 km deep · 77 km away
  15. 1.913 km E of Bridgeport, Washington · 15000 days ago · 0 km deep · 68 km away
  16. 1.61 km N of Chelan Falls, Washington · 14997 days ago · 0 km deep · 40 km away
  17. 2.113 km E of Bridgeport, Washington · 14997 days ago · 0 km deep · 68 km away
  18. 1.822 km E of Skykomish, Washington · 14996 days ago · 0 km deep · 64 km away
  19. 1.530 km NW of Leavenworth, Washington · 14994 days ago · -1 km deep · 44 km away
  20. 1.83 km E of Manson, Washington · 14989 days ago · 0 km deep · 28 km away

Before

  1. 1.52 km SW of Entiat, Washington · 15051 days ago · 0 km deep · 43 km away
  2. 2.313 km S of Leavenworth, Washington · 15065 days ago · -1 km deep · 66 km away
  3. 2.50 km W of Quincy, Washington · 15070 days ago · 2 km deep · 98 km away
  4. 1.79 km ESE of Chelan Falls, Washington · 15072 days ago · 9 km deep · 49 km away
  5. 1.73 km NNE of Waterville, Washington · 15076 days ago · 7 km deep · 49 km away

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event uw10193783. Read Tue, Sep 29, 2026, 3:28 PM UTC.