Washington earthquakes

M1.5 earthquake 5 km WSW of Waterville, Washington

A magnitude 1.5 earthquake struck 5 km WSW of Waterville, Washington on Tue, Sep 20, 1983, 3:32 AM PDT (10:32 UTC), 0 km (0 mi) below the surface.

A larger quake followed: M2.1 5 km SSE of Entiat, Washington. This one was a foreshock.

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Map

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

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The earthquake

Magnitude
1.5 (md), micro
Local time
UTC
1983-09-20 10:32:07 UTC
Depth
-0.2 km (-0.1 mi), shallow
Epicenter
47.633° N, 120.142° 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 1.4 km horizontally
Magnitude uncertainty
±0.04
Depth from
From location
Station coverage gap
140°
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: 18 in the 60 days after this one and 6 in the 30 days before it.

After

  1. 2.15 km SSE of Entiat, Washington · 15704 days ago · 5 km deep · 3 km away
  2. 1.54 km SSW of West Wenatchee, Washington · 15700 days ago · 8 km deep · 31 km away
  3. 2.013 km N of Quincy, Washington · 15700 days ago · 0 km deep · 36 km away
  4. 1.68 km N of Entiat, Washington · 15700 days ago · 5 km deep · 14 km away
  5. 1.54 km N of Entiat, Washington · 15691 days ago · 0 km deep · 11 km away
  6. 2.023 km E of Mansfield, Washington · 15690 days ago · 3 km deep · 65 km away
  7. 1.69 km NNE of Waterville, Washington · 15684 days ago · 4 km deep · 14 km away
  8. 1.52 km W of Entiat, Washington · 15683 days ago · 0 km deep · 9 km away
  9. 2.13 km E of Cle Elum, Washington · 15681 days ago · -1 km deep · 74 km away
  10. 1.64 km W of Entiat, Washington · 15679 days ago · 5 km deep · 11 km away
  11. 1.65 km NNE of Entiat, Washington · 15673 days ago · 0 km deep · 10 km away
  12. 2.28 km S of Leavenworth, Washington · 15671 days ago · 1 km deep · 40 km away
  13. 1.86 km N of Waterville, Washington · 15666 days ago · 0 km deep · 10 km away
  14. 1.77 km NNE of Waterville, Washington · 15665 days ago · 0 km deep · 12 km away
  15. 1.89 km WNW of Entiat, Washington · 15662 days ago · 2 km deep · 16 km away
  16. 1.711 km NW of Okanogan, Washington · 15660 days ago · 23 km deep · 96 km away
  17. 1.54 km N of Entiat, Washington · 15660 days ago · 0 km deep · 10 km away
  18. 2.00 km NE of Roslyn, Washington · 15656 days ago · 3 km deep · 78 km away

Before

  1. 2.66 km NW of Entiat, Washington · 15715 days ago · 4 km deep · 13 km away
  2. 2.56 km NW of Entiat, Washington · 15715 days ago · 4 km deep · 13 km away
  3. 2.411 km NW of Entiat, Washington · 15715 days ago · 3 km deep · 18 km away
  4. 1.94 km SW of Chelan Falls, Washington · 15726 days ago · 3 km deep · 17 km away
  5. 1.937 km WSW of Winthrop, Washington · 15734 days ago · 5 km deep · 85 km away
  6. 1.640 km WSW of Twisp, Washington · 15734 days ago · 6 km deep · 81 km away

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event uw10163263. Read Wed, Sep 23, 2026, 4:24 AM UTC.