Washington earthquakes

M2.0 earthquake 2 km WSW of Birch Bay, Washington

A magnitude 2.0 earthquake struck 2 km WSW of Birch Bay, Washington on Fri, Aug 28, 1987, 6:23 AM PDT (13:23 UTC), 15 km (9 mi) below the surface.

A larger quake followed: M3.0 4 km WSW of Langley, Canada. This one was a foreshock.

Birch Bay 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
2.0 (md), micro
Local time
UTC
1987-08-28 13:23:38 UTC
Depth
14.6 km (9.1 mi), shallow
Epicenter
48.913° N, 122.772° 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 2.0 km horizontally, 1.7 km in depth
Magnitude uncertainty
±0.06
Depth from
From location
Station coverage gap
244°, poorly surrounded by stations
Stations used
13

Nearest places

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

Nearby

Within 100 km, magnitude 1.5 and up: 10 in the 60 days after this one and 8 in the 30 days before it.

After

  1. 1.96 km SSE of Concrete, Washington · 14268 days ago · 2 km deep · 91 km away
  2. 1.515 km E of North Saanich, Canada · 14258 days ago · 50 km deep · 42 km away
  3. 1.710 km NW of Marblemount, Washington · 14258 days ago · -1 km deep · 97 km away
  4. 1.79 km NNW of Marblemount, Washington · 14256 days ago · 0 km deep · 98 km away
  5. 1.816 km SE of Glacier, Washington · 14253 days ago · 25 km deep · 73 km away
  6. 3.04 km WSW of Langley, Canada · 14251 days ago · 1 km deep · 19 km away
  7. 2.34 km WSW of Langley, Canada · 14249 days ago · 4 km deep · 20 km away
  8. 2.82 km N of Port Townsend, Washington · 14247 days ago · 21 km deep · 86 km away
  9. 2.85 km NE of Blyn, Washington · 14247 days ago · 55 km deep · 96 km away
  10. 1.918 km SE of Oak Bay, Canada · 14220 days ago · 23 km deep · 70 km away

Before

  1. 1.631 km NNW of Chilliwack, Canada · 14276 days ago · -1 km deep · 73 km away
  2. 1.65 km NNW of Orcas, Washington · 14276 days ago · 18 km deep · 33 km away
  3. 1.72 km SSW of Birch Bay, Washington · 14277 days ago · 13 km deep · 2 km away
  4. 1.715 km ESE of Oak Bay, Canada · 14278 days ago · 5 km deep · 62 km away
  5. 1.76 km SSW of Geneva, Washington · 14290 days ago · 12 km deep · 34 km away
  6. 1.55 km SSW of Geneva, Washington · 14291 days ago · 12 km deep · 34 km away
  7. 2.06 km SW of Geneva, Washington · 14292 days ago · 12 km deep · 33 km away
  8. 2.71 km N of Port Townsend, Washington · 14292 days ago · 22 km deep · 87 km away

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event uw10225683. Read Tue, Sep 22, 2026, 11:01 AM UTC.