Washington earthquakes

M1.6 earthquake 6 km NE of Rochester, Washington

A magnitude 1.6 earthquake struck 6 km NE of Rochester, Washington on Wed, Aug 26, 2026, 10:17 AM PDT (17:17 UTC), 6 km (4 mi) below the surface.

A larger quake followed: M3.8 20 km E of Castle Rock, Washington. This one was a foreshock.

Rochester 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
2026-08-26 17:17:10 UTC
Depth
5.8 km (3.6 mi), shallow
Epicenter
46.866° N, 123.051° W
Tsunami flag
No
Status
Reviewed by a seismologist

Did you feel it?

No one has reported feeling this quake to the USGS. If you felt it, tell the USGS: every report sharpens the shaking map.

How well it is located

Reviewed by a seismologist.

Location uncertainty
About 45.9 km horizontally, 20.3 km in depth
Magnitude uncertainty
±0.03
Depth from
From location
Station coverage gap
183°, poorly surrounded by stations
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: 10 since this one and 11 in the 30 days before it.

After

  1. 1.61 km NNE of Maple Valley, Washington · 24 days ago · 16 km deep · 97 km away
  2. 1.68 km E of Ashford, Washington · 23 days ago · -1 km deep · 86 km away
  3. 1.632 km N of Amboy, Washington · 20 days ago · 10 km deep · 90 km away
  4. 3.820 km E of Castle Rock, Washington · 17 days ago · 18 km deep · 76 km away · felt by 1,025
  5. 1.82 km WSW of Ocean City, Washington · 13 days ago · 8 km deep · 90 km away
  6. 1.57 km NNE of Ashford, Washington · 10 days ago · 8 km deep · 81 km away
  7. 1.720 km E of Castle Rock, Washington · 6 days ago · 17 km deep · 76 km away
  8. 1.511 km NE of Ashford, Washington · 5 days ago · 5 km deep · 86 km away
  9. 1.537 km NNE of Amboy, Washington · 3 days ago · -2 km deep · 99 km away
  10. 1.55 km SSW of Morton, Washington · 46 hr ago · 10 km deep · 68 km away

Before

  1. 1.735 km NE of Amanda Park, Washington · 28 days ago · 35 km deep · 95 km away
  2. 1.827 km N of Amboy, Washington · 29 days ago · 6 km deep · 90 km away
  3. 1.78 km E of Ashford, Washington · 31 days ago · 2 km deep · 86 km away
  4. 2.48 km E of Ashford, Washington · 31 days ago · 4 km deep · 86 km away · felt by 3
  5. 2.337 km NNE of Amboy, Washington · 37 days ago · -2 km deep · 99 km away
  6. 1.72 km NNW of Enetai, Washington · 42 days ago · 23 km deep · 89 km away
  7. 1.96 km SSE of Lea Hill, Washington · 46 days ago · 4 km deep · 81 km away
  8. 2.223 km ENE of Ashford, Washington · 52 days ago · -1 km deep · 98 km away · felt by 1
  9. 1.55 km WSW of Mercer Island, Washington · 52 days ago · 26 km deep · 95 km away
  10. 1.50 km NNW of Eatonville, Washington · 54 days ago · 0 km deep · 59 km away
  11. 1.537 km NNE of Amboy, Washington · 55 days ago · 0 km deep · 100 km away

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event uw714088051. Read Tue, Sep 22, 2026, 8:49 PM UTC.