Washington earthquakes

M1.6 earthquake 14 km WNW of Mattawa, Washington

A magnitude 1.6 earthquake struck 14 km WNW of Mattawa, Washington on Wed, May 8, 1985, 5:53 PM PDT (00:53 UTC), 5 km (3 mi) below the surface.

A larger quake followed: M2.3 15 km NW of Mattawa, Washington. This one was a foreshock.

Mattawa 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
1985-05-09 00:53:05 UTC
Depth
4.7 km (2.9 mi), shallow
Epicenter
46.810° N, 120.067° 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 1.2 km horizontally, 1.4 km in depth
Magnitude uncertainty
±0.16
Depth from
From location
Station coverage gap
78°
Stations used
10

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 9 in the 30 days before it.

After

  1. 2.315 km NW of Mattawa, Washington · 15110 days ago · 2 km deep · 1 km away
  2. 1.814 km NW of Mattawa, Washington · 15110 days ago · -1 km deep · 1 km away
  3. 2.114 km NW of Mattawa, Washington · 15110 days ago · 3 km deep · 1 km away
  4. 1.614 km NW of Mattawa, Washington · 15110 days ago · 0 km deep · 1 km away
  5. 1.614 km NW of Mattawa, Washington · 15097 days ago · -1 km deep · 1 km away
  6. 2.413 km NNW of Vantage, Washington · 15096 days ago · 0 km deep · 27 km away
  7. 1.613 km SSW of Vantage, Washington · 15095 days ago · 4 km deep · 3 km away
  8. 1.711 km NNE of Selah, Washington · 15089 days ago · 9 km deep · 33 km away
  9. 1.77 km W of Entiat, Washington · 15088 days ago · 3 km deep · 98 km away
  10. 1.90 km WSW of Quincy, Washington · 15085 days ago · 0 km deep · 49 km away
  11. 3.28 km W of Connell, Washington · 15080 days ago · 3 km deep · 84 km away
  12. 3.014 km NNW of Vantage, Washington · 15072 days ago · 0 km deep · 28 km away
  13. 1.810 km NW of Vantage, Washington · 15072 days ago · 0 km deep · 23 km away
  14. 1.511 km NNW of Vantage, Washington · 15072 days ago · 0 km deep · 26 km away
  15. 1.73 km NNE of Waterville, Washington · 15068 days ago · 7 km deep · 96 km away
  16. 2.50 km W of Quincy, Washington · 15063 days ago · 2 km deep · 50 km away
  17. 2.78 km SW of Warden, Washington · 15061 days ago · 3 km deep · 73 km away
  18. 2.313 km S of Leavenworth, Washington · 15058 days ago · -1 km deep · 86 km away

Before

  1. 2.014 km SSW of Vantage, Washington · 15112 days ago · 1 km deep · 2 km away
  2. 2.114 km SSW of Vantage, Washington · 15112 days ago · 2 km deep · 1 km away
  3. 1.512 km S of South Cle Elum, Washington · 15113 days ago · 1 km deep · 72 km away
  4. 1.94 km SSW of Connell, Washington · 15119 days ago · 2 km deep · 93 km away
  5. 1.813 km SE of Kittitas, Washington · 15131 days ago · 18 km deep · 19 km away
  6. 3.213 km SE of Kittitas, Washington · 15131 days ago · 5 km deep · 19 km away
  7. 2.024 km SE of Kittitas, Washington · 15136 days ago · 2 km deep · 13 km away
  8. 1.61 km NNW of Harrah, Washington · 15136 days ago · 15 km deep · 58 km away
  9. 2.73 km NNE of Waterville, Washington · 15139 days ago · 0 km deep · 96 km away

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event uw10187613. Read Tue, Sep 22, 2026, 12:24 PM UTC.