Washington earthquakes

M1.5 earthquake 12 km NNE of Naches, Washington

A magnitude 1.5 earthquake struck 12 km NNE of Naches, Washington on Sun, Aug 12, 1990, 3:56 PM PDT (22:56 UTC), 13 km (8 mi) below the surface.

A larger quake followed: M2.7 Washington. This one was a foreshock.

Naches 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
1.5 (Md, duration), micro
Magnitude from
Pacific Northwest Seismic Network
Local time
UTC
1990-08-12 22:56:43 UTC
Depth
13.1 km (8.1 mi), shallow
Epicenter
46.844° N, 120.664° 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 0.8 km horizontally, 1.1 km in depth
Magnitude uncertainty
±0.12
Depth from
From location
Station coverage gap
78°
Stations used
22

Nearest places

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

Nearby

Within 100 km, magnitude 1.5 and up: 9 in the 60 days after this one and 8 in the 30 days before it.

After

  1. 1.86 km W of Entiat, Washington · 13193 days ago · -1 km deep · 97 km away
  2. 1.723 km N of Packwood, Washington · 13186 days ago · 3 km deep · 81 km away
  3. 1.61 km ESE of Entiat, Washington · 13183 days ago · -1 km deep · 99 km away
  4. 2.224 km N of Packwood, Washington · 13179 days ago · -1 km deep · 80 km away
  5. 1.717 km ENE of Ashford, Washington · 13170 days ago · -1 km deep · 88 km away
  6. 1.524 km ENE of Ashford, Washington · 13170 days ago · -2 km deep · 82 km away
  7. 2.7Washington · 13165 days ago · 20 km deep · 88 km away
  8. 1.525 km ENE of Ashford, Washington · 13162 days ago · -2 km deep · 83 km away
  9. 1.84 km WNW of Cliffdell, Washington · 13159 days ago · -1 km deep · 38 km away

Before

  1. 1.910 km WNW of Vantage, Washington · 13203 days ago · 3 km deep · 44 km away
  2. 3.023 km ENE of Ashford, Washington · 13215 days ago · -1 km deep · 84 km away
  3. 1.821 km ESE of Desert Aire, Washington · 13215 days ago · 10 km deep · 81 km away
  4. 1.615 km SSW of Ellensburg, Washington · 13216 days ago · 7 km deep · 5 km away
  5. 1.627 km SSE of Greenwater, Washington · 13219 days ago · 3 km deep · 67 km away
  6. 1.827 km SSE of Greenwater, Washington · 13219 days ago · 3 km deep · 68 km away
  7. 1.522 km ENE of Ashford, Washington · 13225 days ago · -2 km deep · 84 km away
  8. 2.18 km SW of Toppenish, Washington · 13225 days ago · 5 km deep · 61 km away

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event uw10262958. Read Thu, Oct 1, 2026, 10:06 PM UTC.