Washington earthquakes

M1.7 earthquake 12 km NNE of Maple Falls, Washington

A magnitude 1.7 earthquake struck 12 km NNE of Maple Falls, Washington on Mon, Jul 28, 1980, 3:50 PM PDT (22:50 UTC), 1 km (1 mi) below the surface.

A larger quake followed: M1.9 2 km N of Hamilton, Washington. 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
1.7 (md), micro
Local time
UTC
1980-07-28 22:50:25 UTC
Depth
1.2 km (0.8 mi), shallow
Epicenter
49.033° N, 122.016° 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 30.0 km horizontally, 99.9 km in depth
Magnitude uncertainty
±0.19
Depth from
Operator assigned
Station coverage gap
286°, poorly surrounded by stations
Stations used
4

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 12 in the 30 days before it.

After

  1. 1.92 km N of Hamilton, Washington · 16855 days ago · 3 km deep · 55 km away
  2. 1.75 km NNE of Oso, Washington · 16854 days ago · -1 km deep · 80 km away
  3. 2.09 km WNW of Orcas, Washington · 16844 days ago · 18 km deep · 90 km away
  4. 1.59 km WNW of Orcas, Washington · 16844 days ago · 13 km deep · 90 km away
  5. 1.57 km WNW of Anacortes, Washington · 16844 days ago · 52 km deep · 75 km away
  6. 3.05 km SW of Darrington, Washington · 16833 days ago · 1 km deep · 94 km away
  7. 1.719 km SSW of Birch Bay, Washington · 16832 days ago · 11 km deep · 70 km away
  8. 2.12 km NNW of Warm Beach, Washington · 16822 days ago · 29 km deep · 97 km away
  9. 1.75 km SSW of Lake McMurray, Washington · 16802 days ago · 0 km deep · 87 km away
  10. 1.611 km N of Swede Heaven, Washington · 16800 days ago · 4 km deep · 76 km away
  11. 1.73 km SW of Darrington, Washington · 16799 days ago · 5 km deep · 93 km away
  12. 1.521 km SE of Glacier, Washington · 16798 days ago · 23 km deep · 38 km away

Before

  1. 1.75 km ENE of Anacortes, Washington · 16865 days ago · 18 km deep · 68 km away
  2. 1.55 km SSW of Darrington, Washington · 16866 days ago · 6 km deep · 96 km away
  3. 1.510 km SSW of Swede Heaven, Washington · 16868 days ago · 17 km deep · 93 km away
  4. 1.722 km E of Darrington, Washington · 16868 days ago · 8 km deep · 97 km away
  5. 1.58 km NE of Maple Falls, Washington · 16871 days ago · -1 km deep · 7 km away
  6. 1.714 km SSW of Concrete, Washington · 16873 days ago · 2 km deep · 69 km away
  7. 2.85 km WSW of Lake Cavanaugh, Washington · 16875 days ago · 13 km deep · 80 km away
  8. 1.85 km WSW of Lake Cavanaugh, Washington · 16875 days ago · 11 km deep · 81 km away
  9. 1.55 km WSW of Lake Cavanaugh, Washington · 16875 days ago · 10 km deep · 80 km away
  10. 2.25 km WSW of Lake Cavanaugh, Washington · 16875 days ago · 11 km deep · 81 km away
  11. 1.75 km S of La Conner, Washington · 16882 days ago · 8 km deep · 85 km away
  12. 1.57 km WSW of Lake Cavanaugh, Washington · 16885 days ago · 10 km deep · 81 km away

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event uw10086078. Read Wed, Sep 23, 2026, 1:20 PM UTC.