Washington earthquakes

M1.6 earthquake 6 km W of Entiat, Washington

A magnitude 1.6 earthquake struck 6 km W of Entiat, Washington on Mon, Dec 19, 1988, 2:09 AM PST (10:09 UTC), 6 km (4 mi) below the surface.

A larger quake followed: M2.9 13 km WSW of Conconully, Washington. This one was a foreshock.

Entiat 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, duration), micro
Magnitude from
Pacific Northwest Seismic Network
Local time
UTC
1988-12-19 10:09:33 UTC
Depth
6.4 km (4.0 mi), shallow
Epicenter
47.685° N, 120.294° 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 0.6 km horizontally, 1.6 km in depth
Magnitude uncertainty
±0.10
Depth from
From location
Station coverage gap
162°
Stations used
6

Nearest places

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

Nearby

Within 100 km, magnitude 1.5 and up: 12 in the 60 days after this one and 10 in the 30 days before it.

After

  1. 1.711 km ESE of Okanogan, Washington · 13800 days ago · -1 km deep · 95 km away
  2. 2.011 km ESE of Okanogan, Washington · 13789 days ago · -1 km deep · 94 km away
  3. 2.913 km WSW of Conconully, Washington · 13778 days ago · -1 km deep · 96 km away
  4. 2.212 km ESE of Okanogan, Washington · 13771 days ago · -1 km deep · 94 km away
  5. 2.313 km W of Wilson Creek, Washington · 13769 days ago · 11 km deep · 80 km away
  6. 1.522 km WNW of Entiat, Washington · 13768 days ago · 11 km deep · 16 km away
  7. 1.82 km SSE of Entiat, Washington · 13764 days ago · 5 km deep · 8 km away
  8. 2.38 km NNE of Methow, Washington · 13750 days ago · 6 km deep · 62 km away
  9. 2.47 km NNE of Waterville, Washington · 13749 days ago · 3 km deep · 21 km away
  10. 2.215 km E of Mansfield, Washington · 13745 days ago · 0 km deep · 66 km away
  11. 2.19 km SE of Omak, Washington · 13744 days ago · -1 km deep · 98 km away
  12. 2.24 km SE of Coulee City, Washington · 13743 days ago · 0 km deep · 79 km away

Before

  1. 1.67 km SSE of Leavenworth, Washington · 13807 days ago · 0 km deep · 31 km away
  2. 1.58 km SSE of Leavenworth, Washington · 13808 days ago · 0 km deep · 30 km away
  3. 1.711 km ESE of Okanogan, Washington · 13810 days ago · -1 km deep · 93 km away
  4. 1.67 km ESE of Omak, Washington · 13815 days ago · -1 km deep · 100 km away
  5. 1.911 km ESE of Okanogan, Washington · 13819 days ago · -1 km deep · 94 km away
  6. 2.210 km NE of Nile, Washington · 13825 days ago · 0 km deep · 98 km away
  7. 1.58 km NNW of Chelan, Washington · 13825 days ago · -1 km deep · 32 km away
  8. 1.68 km NNW of Chelan, Washington · 13825 days ago · -1 km deep · 32 km away
  9. 1.78 km NNW of Chelan, Washington · 13830 days ago · 0 km deep · 31 km away
  10. 2.88 km NNW of Chelan, Washington · 13831 days ago · 0 km deep · 32 km away

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event uw10238708. Read Fri, Oct 2, 2026, 7:44 AM UTC.