Washington earthquakes

M2.7 earthquake 2 km WSW of Big Lake, Washington

A magnitude 2.7 earthquake struck 2 km WSW of Big Lake, Washington on Mon, Sep 29, 1980, 9:38 PM PDT (04:38 UTC), 15 km (9 mi) below the surface.

A larger quake followed: M2.8 2 km E of Cottage Lake, Washington. This one was a foreshock.

Big Lake 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
2.7 (md), micro
Local time
UTC
1980-09-30 04:38:09 UTC
Depth
14.9 km (9.3 mi), shallow
Epicenter
48.394° N, 122.271° 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, 0.9 km in depth
Magnitude uncertainty
±0.24
Depth from
From location
Station coverage gap
92°
Stations used
20

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 10 in the 30 days before it.

After

  1. 2.32 km WSW of Big Lake, Washington · 16794 days ago · 15 km deep · 0 km away
  2. 2.82 km E of Cottage Lake, Washington · 16793 days ago · 8 km deep · 74 km away
  3. 2.72 km W of Big Lake, Washington · 16790 days ago · 15 km deep · 1 km away
  4. 3.011 km S of Friday Harbor, Washington · 16785 days ago · 25 km deep · 57 km away
  5. 2.45 km NE of Glacier, Washington · 16777 days ago · -1 km deep · 65 km away
  6. 2.45 km ESE of Deming, Washington · 16771 days ago · 4 km deep · 46 km away
  7. 2.06 km ESE of Deming, Washington · 16771 days ago · 1 km deep · 47 km away
  8. 1.726 km E of Darrington, Washington · 16762 days ago · -1 km deep · 77 km away
  9. 2.920 km WNW of Quilcene, Washington · 16756 days ago · 45 km deep · 88 km away
  10. 2.84 km SSW of Fall City, Washington · 16739 days ago · 7 km deep · 100 km away

Before

  1. 1.521 km SE of Glacier, Washington · 16798 days ago · 23 km deep · 53 km away
  2. 1.73 km SW of Darrington, Washington · 16798 days ago · 5 km deep · 50 km away
  3. 1.620 km W of Quilcene, Washington · 16799 days ago · 42 km deep · 88 km away
  4. 1.611 km N of Swede Heaven, Washington · 16799 days ago · 4 km deep · 42 km away
  5. 1.75 km SSW of Lake McMurray, Washington · 16801 days ago · 0 km deep · 15 km away
  6. 1.74 km NW of North Sultan, Washington · 16802 days ago · 1 km deep · 63 km away
  7. 3.53 km NNW of North Sultan, Washington · 16802 days ago · 3 km deep · 63 km away
  8. 3.83 km NNW of North Sultan, Washington · 16804 days ago · 4 km deep · 64 km away
  9. 2.12 km NNW of Warm Beach, Washington · 16822 days ago · 29 km deep · 24 km away
  10. 1.84 km WSW of Shoreline, Washington · 16823 days ago · 20 km deep · 74 km away

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event uw10089288. Read Tue, Sep 22, 2026, 10:23 PM UTC.