Washington earthquakes

M2.4 earthquake 7 km SE of Kittitas, Washington

A magnitude 2.4 earthquake struck 7 km SE of Kittitas, Washington on Sun, Aug 18, 1991, 7:05 AM PDT (14:05 UTC), 3 km (2 mi) below the surface.

A larger quake followed: M2.7 8 km SE of Kittitas, Washington. This one was a foreshock.

Kittitas 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
2.4 (Md, duration), micro
Magnitude from
Pacific Northwest Seismic Network
Local time
UTC
1991-08-18 14:05:56 UTC
Depth
3.2 km (2.0 mi), shallow
Epicenter
46.930° N, 120.363° 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 0.5 km horizontally, 0.6 km in depth
Magnitude uncertainty
±0.05
Depth from
From location
Station coverage gap
40°
Stations used
31

Nearest places

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

Nearby

Within 100 km, magnitude 1.5 and up: 17 in the 60 days after this one and 12 in the 30 days before it.

After

  1. 1.57 km SSE of Kittitas, Washington · 12829 days ago · 4 km deep · 1 km away
  2. 2.010 km S of White Swan, Washington · 12828 days ago · -1 km deep · 77 km away
  3. 2.35 km NNE of Waterville, Washington · 12827 days ago · 5 km deep · 88 km away
  4. 1.56 km SE of Kittitas, Washington · 12827 days ago · 3 km deep · 0 km away
  5. 2.56 km SE of Kittitas, Washington · 12823 days ago · 3 km deep · 2 km away
  6. 1.96 km SE of Kittitas, Washington · 12822 days ago · 0 km deep · 2 km away
  7. 2.78 km SE of Kittitas, Washington · 12807 days ago · 4 km deep · 3 km away
  8. 2.67 km SE of Kittitas, Washington · 12806 days ago · 3 km deep · 1 km away
  9. 2.312 km ENE of Naches, Washington · 12802 days ago · 10 km deep · 22 km away
  10. 1.816 km E of Mattawa, Washington · 12801 days ago · 0 km deep · 56 km away
  11. 1.517 km E of Mattawa, Washington · 12801 days ago · 0 km deep · 56 km away
  12. 1.917 km S of Ellensburg, Washington · 12798 days ago · 5 km deep · 16 km away
  13. 1.57 km SSE of Kittitas, Washington · 12795 days ago · 5 km deep · 1 km away
  14. 2.17 km SE of Kittitas, Washington · 12795 days ago · 3 km deep · 1 km away
  15. 1.96 km SE of Kittitas, Washington · 12793 days ago · 3 km deep · 1 km away
  16. 1.78 km S of Leavenworth, Washington · 12788 days ago · 0 km deep · 69 km away
  17. 1.716 km E of Mattawa, Washington · 12778 days ago · 0 km deep · 56 km away

Before

  1. 1.515 km E of Mattawa, Washington · 12830 days ago · 0 km deep · 55 km away
  2. 1.516 km E of Mattawa, Washington · 12830 days ago · 0 km deep · 55 km away
  3. 1.55 km S of Royal City, Washington · 12835 days ago · 12 km deep · 56 km away
  4. 1.57 km SE of Kittitas, Washington · 12835 days ago · 3 km deep · 2 km away
  5. 2.86 km SE of Kittitas, Washington · 12843 days ago · 4 km deep · 1 km away
  6. 1.67 km SE of Kittitas, Washington · 12843 days ago · 2 km deep · 0 km away
  7. 1.621 km SW of South Wenatchee, Washington · 12845 days ago · 8 km deep · 36 km away
  8. 1.716 km E of Mattawa, Washington · 12845 days ago · 0 km deep · 55 km away
  9. 1.82 km SE of Entiat, Washington · 12848 days ago · 4 km deep · 82 km away
  10. 2.09 km NNE of Waterville, Washington · 12850 days ago · 4 km deep · 92 km away
  11. 1.78 km N of Waterville, Washington · 12851 days ago · 2 km deep · 91 km away
  12. 1.716 km E of Mattawa, Washington · 12857 days ago · 0 km deep · 56 km away

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event uw10279043. Read Sat, Oct 3, 2026, 2:47 AM UTC.