Washington earthquakes

M1.7 earthquake 2 km W of La Conner, Washington

A magnitude 1.7 earthquake struck 2 km W of La Conner, Washington on Sun, Mar 26, 1978, 8:48 PM PST (04:48 UTC), 22 km (13 mi) below the surface.

A larger quake followed: M2.1 10 km SE of Orcas, Washington. This one was a foreshock.

La Conner forecastMore in Washington

Map

Where this earthquake was located, with the others nearby. Select one for its page.

Open the live map with earthquakes

The earthquake

Magnitude
1.7 (md), micro
Local time
UTC
1978-03-27 04:48:11 UTC
Depth
21.7 km (13.5 mi), shallow
Epicenter
48.393° N, 122.531° 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
±0.09
Depth from
From location
Station coverage gap
81°
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: 14 in the 60 days after this one and 8 in the 30 days before it.

After

  1. 2.110 km SE of Orcas, Washington · 17710 days ago · 56 km deep · 28 km away
  2. 2.95 km WSW of Coupeville, Washington · 17709 days ago · 21 km deep · 27 km away
  3. 2.211 km SSW of Seabeck, Washington · 17705 days ago · 16 km deep · 97 km away
  4. 1.510 km SSW of Index, Washington · 17703 days ago · 3 km deep · 100 km away
  5. 1.67 km ESE of Deming, Washington · 17699 days ago · 8 km deep · 54 km away
  6. 1.97 km NE of Acme, Washington · 17693 days ago · -1 km deep · 51 km away
  7. 1.55 km SE of Hansville, Washington · 17682 days ago · 50 km deep · 56 km away
  8. 1.70 km W of Lyman, Washington · 17677 days ago · -1 km deep · 37 km away
  9. 2.35 km SE of Anacortes, Washington · 17672 days ago · 14 km deep · 9 km away
  10. 2.39 km SSW of Gold Bar, Washington · 17672 days ago · 3 km deep · 89 km away
  11. 1.82 km E of Sammamish, Washington · 17664 days ago · 11 km deep · 91 km away
  12. 1.83 km N of Woods Creek, Washington · 17661 days ago · 5 km deep · 71 km away
  13. 2.57 km ESE of Deming, Washington · 17660 days ago · 2 km deep · 55 km away
  14. 2.52 km ENE of Lake McMurray, Washington · 17657 days ago · 5 km deep · 26 km away

Before

  1. 1.50 km E of Inglewood-Finn Hill, Washington · 17731 days ago · 9 km deep · 78 km away
  2. 1.58 km ENE of Marrowstone, Washington · 17732 days ago · 54 km deep · 35 km away
  3. 3.54 km NE of Blyn, Washington · 17733 days ago · 53 km deep · 49 km away
  4. 1.82 km SW of Suquamish, Washington · 17734 days ago · 17 km deep · 76 km away
  5. 1.61 km WNW of Larch Way, Washington · 17735 days ago · 13 km deep · 64 km away
  6. 1.51 km WNW of Freeland, Washington · 17736 days ago · 50 km deep · 42 km away
  7. 1.67 km NNE of May Creek, Washington · 17738 days ago · 9 km deep · 85 km away
  8. 2.10 km NNW of Woodway, Washington · 17739 days ago · 11 km deep · 67 km away

Earthquakes todayWashington earthquakesLive radar here

Sources

From the USGS Earthquake Hazards Program and its partner networks, event uw10846313. Read Tue, Sep 22, 2026, 3:41 PM UTC.