Washington earthquakes

M2.2 earthquake 7 km ENE of Lofall, Washington

A magnitude 2.2 earthquake struck 7 km ENE of Lofall, Washington on Sat, Mar 28, 1987, 5:48 PM PST (01:48 UTC), 8 km (5 mi) below the surface.

A larger quake followed: M2.8 3 km SSW of Swede Heaven, Washington. This one was a foreshock.

Lofall 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
2.2 (md), micro
Local time
UTC
1987-03-29 01:48:06 UTC
Depth
7.7 km (4.8 mi), shallow
Epicenter
47.845° N, 122.577° 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 1.6 km horizontally, 4.0 km in depth
Depth from
Operator assigned
Station coverage gap
180°
Stations used
6

Nearest places

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

Nearby

Within 100 km, magnitude 1.5 and up: 9 in the 60 days after this one and 6 in the 30 days before it.

After

  1. 2.83 km SSW of Swede Heaven, Washington · 14423 days ago · 1 km deep · 77 km away
  2. 2.61 km NE of Riverton, Washington · 14420 days ago · 25 km deep · 45 km away
  3. 1.78 km NNE of Snoqualmie, Washington · 14420 days ago · 8 km deep · 66 km away
  4. 1.61 km NE of Riverton, Washington · 14418 days ago · 24 km deep · 45 km away
  5. 2.51 km NE of Riverton, Washington · 14412 days ago · 23 km deep · 45 km away
  6. 1.61 km NNW of Fall City, Washington · 14408 days ago · 8 km deep · 59 km away
  7. 2.83 km W of Chico, Washington · 14400 days ago · 20 km deep · 30 km away
  8. 2.11 km E of Algona, Washington · 14385 days ago · 12 km deep · 68 km away
  9. 2.019 km SSE of Friday Harbor, Washington · 14374 days ago · 14 km deep · 64 km away

Before

  1. 1.77 km SSW of Bellingham, Washington · 14436 days ago · 13 km deep · 95 km away
  2. 2.13 km SSW of Swede Heaven, Washington · 14439 days ago · 3 km deep · 76 km away
  3. 1.50 km SSW of Echo Lake, Washington · 14440 days ago · 21 km deep · 40 km away
  4. 2.83 km SW of Swede Heaven, Washington · 14441 days ago · 3 km deep · 76 km away
  5. 1.61 km SSW of Mercer Island, Washington · 14447 days ago · 5 km deep · 41 km away
  6. 2.33 km S of Seattle, Washington · 14447 days ago · 12 km deep · 35 km away

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event uw10219008. Read Tue, Sep 29, 2026, 8:54 PM UTC.