Washington earthquakes

M1.8 earthquake 21 km NE of Packwood, Washington

A magnitude 1.8 earthquake struck 21 km NE of Packwood, Washington on Mon, Apr 19, 1976, 4:27 AM PST (12:27 UTC), 5 km (3 mi) below the surface.

A larger quake followed: M3.0 6 km NE of Elbe, Washington. This one was a foreshock.

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Map

Where this earthquake was located, with the others nearby. Select one for its page.

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The earthquake

Magnitude
1.8 (Md, duration), micro
Magnitude from
Pacific Northwest Seismic Network
Local time
UTC
1976-04-19 12:27:36 UTC
Depth
5.4 km (3.4 mi), shallow
Epicenter
46.748° N, 121.485° 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 2.4 km horizontally, 1.2 km in depth
Magnitude uncertainty
±0.12
Depth from
From location
Station coverage gap
293°, poorly surrounded by stations
Stations used
4

Nearest places

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

Nearby

Within 100 km, magnitude 1.5 and up: 13 in the 60 days after this one and 4 in the 30 days before it.

After

  1. 1.68 km NNE of Snoqualmie, Washington · 18420 days ago · 4 km deep · 97 km away
  2. 1.70 km NNE of Algona, Washington · 18419 days ago · 5 km deep · 83 km away
  3. 1.53 km NE of Dash Point, Washington · 18415 days ago · 26 km deep · 96 km away
  4. 1.740 km SSE of Morton, Washington · 18415 days ago · 10 km deep · 72 km away
  5. 2.128 km S of Morton, Washington · 18410 days ago · 16 km deep · 77 km away
  6. 2.01 km S of Auburn, Washington · 18409 days ago · 21 km deep · 83 km away
  7. 2.06 km S of Wilderness Rim, Washington · 18409 days ago · 18 km deep · 74 km away
  8. 1.83 km SW of Crocker, Washington · 18408 days ago · 8 km deep · 60 km away
  9. 1.54 km ENE of Mossyrock, Washington · 18399 days ago · 20 km deep · 76 km away
  10. 1.72 km SE of Maple Heights-Lake Desire, Washington · 18396 days ago · 20 km deep · 87 km away
  11. 3.06 km NE of Elbe, Washington · 18379 days ago · 5 km deep · 49 km away
  12. 1.65 km ENE of Elbe, Washington · 18379 days ago · 3 km deep · 49 km away
  13. 1.92 km NE of Mossyrock, Washington · 18372 days ago · 19 km deep · 78 km away

Before

  1. 1.615 km S of Leavenworth, Washington · 18439 days ago · 5 km deep · 100 km away
  2. 2.24 km NNE of Mossyrock, Washington · 18445 days ago · 16 km deep · 77 km away
  3. 1.622 km NE of Ashford, Washington · 18457 days ago · 20 km deep · 31 km away
  4. 1.89 km NE of Ashford, Washington · 18458 days ago · 6 km deep · 36 km away

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event uw10841193. Read Sat, Oct 3, 2026, 4:40 PM UTC.