Washington earthquakes

M1.7 earthquake 4 km E of Maple Falls, Washington

A magnitude 1.7 earthquake struck 4 km E of Maple Falls, Washington on Mon, Jul 27, 1987, 1:49 AM PDT (08:49 UTC), 0 km (0 mi) below the surface.

A larger quake followed: M2.0 6 km SW of Geneva, Washington. This one was a foreshock.

Peaceful Valley 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
1.7 (md), micro
Local time
UTC
1987-07-27 08:49:14 UTC
Depth
0.1 km (0.1 mi), shallow
Epicenter
48.925° N, 122.020° 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 4.2 km horizontally, 3.2 km in depth
Magnitude uncertainty
±0.07
Depth from
From location
Station coverage gap
259°, poorly surrounded by stations
Stations used
11

Nearest places

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

Nearby

Within 100 km, magnitude 1.5 and up: 16 in the 60 days after this one and 4 in the 30 days before it.

After

  1. 2.06 km SW of Geneva, Washington · 14292 days ago · 12 km deep · 41 km away
  2. 1.55 km SSW of Geneva, Washington · 14291 days ago · 12 km deep · 39 km away
  3. 1.76 km SSW of Geneva, Washington · 14290 days ago · 12 km deep · 40 km away
  4. 1.715 km ESE of Oak Bay, Canada · 14278 days ago · 5 km deep · 99 km away
  5. 1.72 km SSW of Birch Bay, Washington · 14277 days ago · 13 km deep · 54 km away
  6. 1.65 km NNW of Orcas, Washington · 14276 days ago · 18 km deep · 76 km away
  7. 1.631 km NNW of Chilliwack, Canada · 14276 days ago · -1 km deep · 56 km away
  8. 2.457 km SE of Hope, Canada · 14270 days ago · 34 km deep · 78 km away
  9. 2.02 km WSW of Birch Bay, Washington · 14270 days ago · 15 km deep · 55 km away
  10. 1.96 km SSE of Concrete, Washington · 14268 days ago · 2 km deep · 53 km away
  11. 1.515 km E of North Saanich, Canada · 14259 days ago · 50 km deep · 92 km away
  12. 1.710 km NW of Marblemount, Washington · 14258 days ago · -1 km deep · 50 km away
  13. 1.79 km NNW of Marblemount, Washington · 14256 days ago · 0 km deep · 51 km away
  14. 1.816 km SE of Glacier, Washington · 14254 days ago · 25 km deep · 23 km away
  15. 3.04 km WSW of Langley, Canada · 14251 days ago · 1 km deep · 53 km away
  16. 2.34 km WSW of Langley, Canada · 14249 days ago · 4 km deep · 53 km away

Before

  1. 1.54 km SSW of Big Lake, Washington · 14308 days ago · 18 km deep · 65 km away
  2. 1.55 km W of Lyman, Washington · 14323 days ago · -1 km deep · 45 km away
  3. 2.45 km ESE of Oak Harbor, Washington · 14324 days ago · 25 km deep · 82 km away
  4. 2.26 km WSW of Peaceful Valley, Washington · 14328 days ago · 16 km deep · 15 km away

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event uw10222993. Read Tue, Sep 22, 2026, 12:08 PM UTC.