Washington earthquakes

M1.5 earthquake 9 km WNW of Orcas, Washington

A magnitude 1.5 earthquake struck 9 km WNW of Orcas, Washington on Mon, Aug 11, 1980, 3:24 AM PDT (10:24 UTC), 13 km (8 mi) below the surface.

A larger quake followed: M1.7 4 km ENE of Six Mile, Canada. This one was a foreshock.

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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
1980-08-11 10:24:27 UTC
Depth
13.5 km (8.4 mi), shallow
Epicenter
48.616° N, 123.075° 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 0.8 km horizontally, 1.8 km in depth
Magnitude uncertainty
±0.05
Depth from
From location
Station coverage gap
64°
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: 12 in the 60 days after this one and 7 in the 30 days before it.

After

  1. 1.57 km WNW of Anacortes, Washington · 16844 days ago · 52 km deep · 28 km away
  2. 1.74 km ENE of Six Mile, Canada · 16834 days ago · 30 km deep · 30 km away
  3. 1.64 km WSW of Hansville, Washington · 16833 days ago · 16 km deep · 87 km away
  4. 1.719 km SSW of Birch Bay, Washington · 16832 days ago · 11 km deep · 22 km away
  5. 2.12 km NNW of Warm Beach, Washington · 16823 days ago · 29 km deep · 70 km away
  6. 1.75 km SSW of Lake McMurray, Washington · 16802 days ago · 0 km deep · 72 km away
  7. 1.620 km W of Quilcene, Washington · 16800 days ago · 42 km deep · 84 km away
  8. 1.521 km SE of Glacier, Washington · 16799 days ago · 23 km deep · 97 km away
  9. 2.72 km WSW of Big Lake, Washington · 16795 days ago · 15 km deep · 64 km away
  10. 2.32 km WSW of Big Lake, Washington · 16795 days ago · 15 km deep · 64 km away
  11. 2.72 km W of Big Lake, Washington · 16791 days ago · 15 km deep · 63 km away
  12. 3.011 km S of Friday Harbor, Washington · 16787 days ago · 25 km deep · 21 km away

Before

  1. 2.09 km WNW of Orcas, Washington · 16845 days ago · 18 km deep · 0 km away
  2. 1.75 km NNE of Oso, Washington · 16854 days ago · -1 km deep · 93 km away
  3. 1.92 km N of Hamilton, Washington · 16855 days ago · 3 km deep · 80 km away
  4. 1.712 km NNE of Maple Falls, Washington · 16858 days ago · 1 km deep · 90 km away
  5. 1.75 km ENE of Anacortes, Washington · 16866 days ago · 18 km deep · 40 km away
  6. 1.58 km NE of Maple Falls, Washington · 16871 days ago · -1 km deep · 89 km away
  7. 1.714 km SSW of Concrete, Washington · 16873 days ago · 2 km deep · 94 km away

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event uw10083778. Read Wed, Sep 23, 2026, 10:54 PM UTC.