Washington earthquakes

M1.9 earthquake 9 km NNW of Ault Field, Washington

A magnitude 1.9 earthquake struck 9 km NNW of Ault Field, Washington on Fri, Oct 30, 1987, 2:51 PM PST (22:51 UTC), 52 km (32 mi) below the surface.

A larger quake followed: M2.7 3 km NNW of Victoria, Canada. This one was a foreshock.

Ault Field 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
1.9 (md), micro
Local time
UTC
1987-10-30 22:51:23 UTC
Depth
51.9 km (32.3 mi), shallow
Epicenter
48.416° N, 122.720° 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 0.6 km horizontally, 0.7 km in depth
Magnitude uncertainty
±0.09
Depth from
From location
Station coverage gap
31°
Stations used
30

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 4 in the 30 days before it.

After

  1. 1.91 km SW of Rocky Point, Washington · 14211 days ago · 17 km deep · 93 km away
  2. 2.41 km E of Ferndale, Washington · 14206 days ago · 18 km deep · 49 km away
  3. 1.56 km ENE of Verlot, Washington · 14205 days ago · 14 km deep · 83 km away
  4. 2.210 km N of Quilcene, Washington · 14205 days ago · 19 km deep · 56 km away
  5. 1.54 km E of Port Ludlow, Washington · 14188 days ago · 16 km deep · 56 km away
  6. 1.83 km WSW of Shoreline, Washington · 14188 days ago · 14 km deep · 79 km away
  7. 2.115 km SW of Brinnon, Washington · 14172 days ago · 44 km deep · 95 km away
  8. 1.81 km SSW of Navy Yard City, Washington · 14171 days ago · 22 km deep · 98 km away
  9. 2.73 km NNW of Victoria, Canada · 14164 days ago · 23 km deep · 49 km away
  10. 1.64 km NW of Victoria, Canada · 14161 days ago · 22 km deep · 49 km away
  11. 1.618 km NNW of Jamestown, Washington · 14159 days ago · 42 km deep · 38 km away

Before

  1. 1.713 km WNW of Chilliwack, Canada · 14215 days ago · -1 km deep · 96 km away
  2. 1.918 km SE of Oak Bay, Canada · 14228 days ago · 23 km deep · 32 km away
  3. 1.98 km SSE of Sultan, Washington · 14239 days ago · 14 km deep · 99 km away
  4. 1.87 km SSW of Quilcene, Washington · 14244 days ago · 47 km deep · 74 km away

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event uw10227203. Read Wed, Sep 30, 2026, 1:28 AM UTC.