Washington earthquakes

M1.6 earthquake 2 km SW of Kalama, Washington

A magnitude 1.6 earthquake struck 2 km SW of Kalama, Washington on Mon, Apr 20, 1992, 7:38 AM PDT (14:38 UTC), 20 km (13 mi) below the surface.

A larger quake followed: M2.2 Washington-Oregon border region. This one was a foreshock.

Kalama 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, duration), micro
Magnitude from
Pacific Northwest Seismic Network
Local time
UTC
1992-04-20 14:38:39 UTC
Depth
20.4 km (12.6 mi), shallow
Epicenter
45.987° N, 122.866° 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, 0.9 km in depth
Magnitude uncertainty
±0.06
Depth from
From location
Station coverage gap
80°
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: 8 in the 60 days after this one and 8 in the 30 days before it.

After

  1. 2.136 km NNE of Amboy, Washington · 12572 days ago · -2 km deep · 56 km away
  2. 1.938 km NNE of Amboy, Washington · 12572 days ago · 3 km deep · 57 km away
  3. 1.66 km NE of Oak Hills, Oregon · 12560 days ago · 17 km deep · 46 km away
  4. 1.51 km WSW of Morton, Washington · 12548 days ago · 10 km deep · 77 km away
  5. 2.2Washington-Oregon border region · 12547 days ago · 15 km deep · 46 km away
  6. 1.811 km ESE of Yacolt, Washington · 12544 days ago · 6 km deep · 49 km away
  7. 1.627 km SSE of Morton, Washington · 12540 days ago · 3 km deep · 65 km away
  8. 1.936 km NNE of Amboy, Washington · 12533 days ago · -2 km deep · 57 km away

Before

  1. 2.23 km E of Mount Vista, Washington · 12585 days ago · 19 km deep · 35 km away
  2. 2.138 km NNE of Amboy, Washington · 12590 days ago · -1 km deep · 57 km away
  3. 1.74 km SE of Mossyrock, Washington · 12598 days ago · 19 km deep · 66 km away
  4. 1.710 km SE of Mossyrock, Washington · 12599 days ago · 15 km deep · 65 km away
  5. 1.62 km ESE of Donald, Oregon · 12603 days ago · 26 km deep · 86 km away
  6. 1.726 km SSE of Mossyrock, Washington · 12609 days ago · -1 km deep · 55 km away
  7. 1.86 km SW of Morton, Washington · 12611 days ago · 21 km deep · 71 km away
  8. 1.96 km SSW of Morton, Washington · 12612 days ago · 20 km deep · 72 km away

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event uw10289243. Read Sat, Oct 3, 2026, 1:38 PM UTC.