Washington earthquakes

M1.6 earthquake 14 km NNW of Amboy, Washington

A magnitude 1.6 earthquake struck 14 km NNW of Amboy, Washington on Fri, Sep 21, 1990, 4:34 PM PDT (23:34 UTC), 19 km (12 mi) below the surface.

A larger quake followed: M2.9 3 km ENE of Kelso, 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.

Open the live map with earthquakes

The earthquake

Magnitude
1.6 (Md, duration), micro
Magnitude from
Pacific Northwest Seismic Network
Local time
UTC
1990-09-21 23:34:31 UTC
Depth
19.2 km (11.9 mi), shallow
Epicenter
46.032° N, 122.524° 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 0.6 km horizontally, 0.6 km in depth
Magnitude uncertainty
±0.07
Depth from
From location
Station coverage gap
138°
Stations used
29

Nearest places

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

Nearby

Within 100 km, magnitude 1.5 and up: 16 in the 60 days after this one and 12 in the 30 days before it.

After

  1. 2.638 km NNE of Amboy, Washington · 13156 days ago · 0 km deep · 32 km away
  2. 1.638 km NE of Amboy, Washington · 13156 days ago · -1 km deep · 33 km away
  3. 2.93 km ENE of Kelso, Washington · 13151 days ago · 22 km deep · 30 km away
  4. 2.63 km ENE of Kelso, Washington · 13151 days ago · 21 km deep · 30 km away
  5. 1.65 km ESE of West Side Highway, Washington · 13150 days ago · 19 km deep · 30 km away
  6. 2.15 km NW of Mount Hood, Oregon · 13148 days ago · 5 km deep · 87 km away
  7. 2.019 km S of Morton, Washington · 13148 days ago · 19 km deep · 44 km away
  8. 1.736 km NNE of Amboy, Washington · 13124 days ago · -2 km deep · 31 km away
  9. 1.738 km NNE of Amboy, Washington · 13124 days ago · -2 km deep · 32 km away
  10. 2.036 km S of Morton, Washington · 13114 days ago · 0 km deep · 35 km away
  11. 1.923 km S of Morton, Washington · 13110 days ago · 7 km deep · 41 km away
  12. 1.88 km NNE of Government Camp, Oregon · 13109 days ago · 3 km deep · 98 km away
  13. 1.621 km E of Kelso, Washington · 13109 days ago · 13 km deep · 15 km away
  14. 1.55 km SW of Pe Ell, Washington · 13107 days ago · 25 km deep · 84 km away
  15. 1.838 km NNE of Amboy, Washington · 13105 days ago · -2 km deep · 32 km away
  16. 1.85 km SW of Mulino, Oregon · 13100 days ago · 27 km deep · 94 km away

Before

  1. 2.237 km NNE of Amboy, Washington · 13164 days ago · -2 km deep · 31 km away
  2. 2.7Washington · 13165 days ago · 20 km deep · 99 km away
  3. 1.537 km NNE of Amboy, Washington · 13170 days ago · 5 km deep · 32 km away
  4. 2.04 km E of Mossyrock, Washington · 13171 days ago · 20 km deep · 56 km away
  5. 2.337 km NNE of Amboy, Washington · 13172 days ago · -1 km deep · 31 km away
  6. 1.537 km NE of Amboy, Washington · 13175 days ago · 14 km deep · 38 km away
  7. 1.637 km NNE of Amboy, Washington · 13175 days ago · 0 km deep · 32 km away
  8. 1.838 km NNE of Amboy, Washington · 13179 days ago · 0 km deep · 32 km away
  9. 2.138 km NNE of Amboy, Washington · 13179 days ago · 0 km deep · 32 km away
  10. 1.537 km NNE of Amboy, Washington · 13179 days ago · 1 km deep · 31 km away
  11. 1.538 km NNE of Amboy, Washington · 13182 days ago · 2 km deep · 32 km away
  12. 1.537 km NNE of Amboy, Washington · 13186 days ago · 3 km deep · 32 km away

Earthquakes todayWashington earthquakesLive radar here

Sources

From the USGS Earthquake Hazards Program and its partner networks, event uw10264918. Read Thu, Oct 1, 2026, 7:13 PM UTC.