Washington earthquakes

M2.4 earthquake 3 km W of Anacortes, Washington

A magnitude 2.4 earthquake struck 3 km W of Anacortes, Washington on Fri, Jul 28, 1972, 6:58 PM PDT (01:58 UTC), 57 km (35 mi) below the surface.

A larger quake followed: M2.8 9 km SE of Blyn, Washington. This one was a foreshock.

Anacortes 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
2.4 (md), micro
Local time
UTC
1972-07-29 01:58:04 UTC
Depth
56.7 km (35.2 mi), shallow
Epicenter
48.518° N, 122.658° 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 1.4 km horizontally, 1.1 km in depth
Magnitude uncertainty
±0.07
Depth from
From location
Station coverage gap
281°, poorly surrounded by stations
Stations used
5

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 7 in the 30 days before it.

After

  1. 1.95 km N of Quilcene, Washington · 19781 days ago · 15 km deep · 74 km away
  2. 1.74 km SSW of Quilcene, Washington · 19779 days ago · 13 km deep · 84 km away
  3. 1.87 km SW of Coupeville, Washington · 19776 days ago · 26 km deep · 38 km away
  4. 2.01 km SSW of Woodway, Washington · 19766 days ago · 42 km deep · 84 km away
  5. 1.63 km NE of Cathcart, Washington · 19766 days ago · 23 km deep · 84 km away
  6. 1.90 km WNW of Lake Forest Park, Washington · 19754 days ago · 20 km deep · 89 km away
  7. 1.80 km WSW of Cottage Lake, Washington · 19748 days ago · 4 km deep · 96 km away
  8. 2.34 km E of Port Townsend, Washington · 19743 days ago · 52 km deep · 44 km away
  9. 1.86 km WSW of Shoreline, Washington · 19737 days ago · 22 km deep · 89 km away
  10. 2.89 km SE of Blyn, Washington · 19723 days ago · 41 km deep · 64 km away

Before

  1. 2.04 km SE of Kingston, Washington · 19783 days ago · 21 km deep · 85 km away
  2. 3.04 km SE of Kingston, Washington · 19783 days ago · 22 km deep · 85 km away
  3. 2.011 km WSW of Ault Field, Washington · 19794 days ago · 29 km deep · 27 km away
  4. 1.821 km SE of Oak Bay, Canada · 19796 days ago · 47 km deep · 38 km away
  5. 2.51 km NE of Three Lakes, Washington · 19803 days ago · 14 km deep · 79 km away
  6. 2.115 km NNW of Anacortes, Washington · 19806 days ago · 18 km deep · 14 km away
  7. 2.76 km S of Blyn, Washington · 19811 days ago · 50 km deep · 67 km away

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event uw10853513. Read Sat, Sep 26, 2026, 7:14 PM UTC.