Washington earthquakes

M1.5 earthquake 7 km WSW of Ault Field, Washington

A magnitude 1.5 earthquake struck 7 km WSW of Ault Field, Washington on Fri, May 26, 1978, 8:46 AM PDT (15:46 UTC), 15 km (9 mi) below the surface.

A larger quake followed: M3.3 Puget Sound region, Washington. 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
1.5 (md), micro
Local time
UTC
1978-05-26 15:46:55 UTC
Depth
14.9 km (9.3 mi), shallow
Epicenter
48.314° N, 122.775° 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 0.7 km horizontally, 1.3 km in depth
Magnitude uncertainty
±0.10
Depth from
From location
Station coverage gap
99°
Stations used
9

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 11 in the 30 days before it.

After

  1. 1.55 km SSE of Edison, Washington · 17647 days ago · 17 km deep · 36 km away
  2. 1.57 km E of Oak Bay, Canada · 17641 days ago · 47 km deep · 35 km away
  3. 1.58 km SSW of Gold Bar, Washington · 17641 days ago · 3 km deep · 95 km away
  4. 2.24 km N of La Conner, Washington · 17634 days ago · 24 km deep · 24 km away
  5. 3.3Puget Sound region, Washington · 17631 days ago · 46 km deep · 86 km away
  6. 1.64 km SE of Three Lakes, Washington · 17617 days ago · 15 km deep · 74 km away
  7. 1.59 km ENE of Oak Bay, Canada · 17615 days ago · 21 km deep · 35 km away
  8. 1.53 km E of Alger, Washington · 17608 days ago · 18 km deep · 49 km away
  9. 1.93 km E of Port Townsend, Washington · 17599 days ago · 23 km deep · 22 km away

Before

  1. 2.52 km ENE of Lake McMurray, Washington · 17662 days ago · 5 km deep · 43 km away
  2. 2.57 km ESE of Deming, Washington · 17666 days ago · 2 km deep · 73 km away
  3. 1.83 km N of Woods Creek, Washington · 17666 days ago · 5 km deep · 79 km away
  4. 1.82 km E of Sammamish, Washington · 17669 days ago · 11 km deep · 92 km away
  5. 1.57 km W of Burley, Washington · 17672 days ago · 24 km deep · 99 km away
  6. 2.06 km WNW of Burley, Washington · 17673 days ago · 15 km deep · 98 km away
  7. 2.39 km SSW of Gold Bar, Washington · 17677 days ago · 3 km deep · 96 km away
  8. 2.35 km SE of Anacortes, Washington · 17678 days ago · 14 km deep · 24 km away
  9. 1.92 km SSE of Belfair, Washington · 17680 days ago · 19 km deep · 99 km away
  10. 1.75 km W of Burley, Washington · 17681 days ago · 21 km deep · 100 km away
  11. 1.70 km W of Lyman, Washington · 17682 days ago · -1 km deep · 57 km away

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event uw10847018. Read Sun, Sep 27, 2026, 8:32 PM UTC.