Washington earthquakes

M1.0 earthquake 32 km NNE of Amboy, Washington

A magnitude 1.0 earthquake struck 32 km NNE of Amboy, Washington on Sun, Sep 20, 2026, 11:59 AM PDT (18:59 UTC), 11 km (7 mi) below the surface.

A larger quake followed: M1.5 5 km SSW of Morton, Washington. This one was a foreshock.

Amboy 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
1.0 (md), micro
Local time
UTC
2026-09-20 18:59:19 UTC
Depth
11.1 km (6.9 mi), shallow
Epicenter
46.194° N, 122.346° 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 0.3 km horizontally, 0.5 km in depth
Magnitude uncertainty
±0.19
Depth from
From location
Station coverage gap
66°
Stations used
18

Nearest places

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

Nearby

Within 100 km, magnitude 1.5 and up: 2 since this one and 14 in the 30 days before it.

After

  1. 1.55 km SSW of Morton, Washington · 36 hr ago · 10 km deep · 36 km away
  2. 1.718 km N of Amboy, Washington · 15 hr ago · 10 km deep · 15 km away

Before

  1. 1.537 km NNE of Amboy, Washington · 2 days ago · -2 km deep · 12 km away
  2. 2.725 km ENE of Yacolt, Washington · 4 days ago · 9 km deep · 33 km away
  3. 1.511 km NE of Ashford, Washington · 5 days ago · 5 km deep · 78 km away
  4. 2.010 km SSE of Scappoose, Oregon · 5 days ago · 23 km deep · 69 km away
  5. 1.720 km E of Castle Rock, Washington · 6 days ago · 17 km deep · 24 km away
  6. 1.57 km NNE of Ashford, Washington · 10 days ago · 8 km deep · 75 km away
  7. 3.820 km E of Castle Rock, Washington · 17 days ago · 18 km deep · 24 km away · felt by 1,025
  8. 1.632 km N of Amboy, Washington · 19 days ago · 10 km deep · 2 km away
  9. 1.68 km E of Ashford, Washington · 23 days ago · -1 km deep · 71 km away
  10. 1.520 km S of Packwood, Washington · 23 days ago · 4 km deep · 61 km away
  11. 1.66 km NE of Rochester, Washington · 27 days ago · 6 km deep · 92 km away
  12. 1.827 km N of Amboy, Washington · 28 days ago · 6 km deep · 11 km away
  13. 1.78 km E of Ashford, Washington · 31 days ago · 2 km deep · 71 km away
  14. 2.48 km E of Ashford, Washington · 31 days ago · 4 km deep · 71 km away · felt by 3

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event uw714106361. Read Tue, Sep 22, 2026, 10:58 AM UTC.