Oregon earthquakes

M1.5 earthquake 5 km NE of Estacada, Oregon

A magnitude 1.5 earthquake struck 5 km NE of Estacada, Oregon on Thu, Mar 21, 1991, 3:22 AM PST (11:22 UTC), 16 km (10 mi) below the surface.

A larger quake followed: M2.4 38 km NNE of Amboy, Washington. This one was a foreshock.

Estacada forecastMore in Oregon

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
1991-03-21 11:22:55 UTC
Depth
15.8 km (9.8 mi), shallow
Epicenter
45.322° N, 122.288° W
Region
Oregon
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 0.7 km horizontally, 1.2 km in depth
Magnitude uncertainty
±0.06
Depth from
From location
Station coverage gap
114°
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: 11 in the 60 days after this one and 6 in the 30 days before it.

After

  1. 2.138 km NNE of Amboy, Washington · 12977 days ago · 1 km deep · 99 km away
  2. 1.835 km NNE of Amboy, Washington · 12977 days ago · -1 km deep · 96 km away
  3. 2.438 km NNE of Amboy, Washington · 12977 days ago · -1 km deep · 99 km away
  4. 1.636 km NNE of Amboy, Washington · 12977 days ago · -1 km deep · 97 km away
  5. 1.71 km SSW of Salmon Creek, Washington · 12958 days ago · 20 km deep · 51 km away
  6. 1.618 km ENE of Kalama, Washington · 12954 days ago · 15 km deep · 84 km away
  7. 1.54 km NE of La Center, Washington · 12945 days ago · 15 km deep · 69 km away
  8. 1.937 km NNE of Amboy, Washington · 12944 days ago · -2 km deep · 97 km away
  9. 2.27 km ENE of Scotts Mills, Oregon · 12934 days ago · 25 km deep · 37 km away
  10. 1.638 km NNE of Amboy, Washington · 12930 days ago · -1 km deep · 98 km away
  11. 1.637 km NNE of Amboy, Washington · 12923 days ago · 3 km deep · 98 km away

Before

  1. 1.97 km ESE of Venersborg, Washington · 12980 days ago · 4 km deep · 47 km away
  2. 1.75 km ESE of Ridgefield, Washington · 12986 days ago · 19 km deep · 60 km away
  3. 3.15 km ESE of Ridgefield, Washington · 12995 days ago · 19 km deep · 60 km away
  4. 1.71 km NNE of Mill Plain, Washington · 13003 days ago · 11 km deep · 40 km away
  5. 2.23 km N of North Portland, Oregon · 13004 days ago · 14 km deep · 48 km away
  6. 1.538 km NNE of Amboy, Washington · 13005 days ago · 0 km deep · 98 km away

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event uw10272438. Read Fri, Oct 2, 2026, 12:19 AM UTC.