Washington earthquakes

M2.1 earthquake 0 km NW of Big Lake, Washington

A magnitude 2.1 earthquake struck 0 km NW of Big Lake, Washington on Wed, Mar 17, 2004, 3:50 AM PST (11:50 UTC), 0 km (0 mi) below the surface.

A larger quake followed: M2.5 5 km SW of Sultan, 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
2.1 (Md, duration), micro
Magnitude from
Pacific Northwest Seismic Network
Local time
UTC
2004-03-17 11:50:17 UTC
Depth
-0.4 km (-0.3 mi), shallow
Epicenter
48.404° N, 122.244° 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 0.1 km horizontally, 0.1 km in depth
Magnitude uncertainty
±0.04
Depth from
Operator assigned
Station coverage gap
68°
Stations used
16

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 8 in the 30 days before it.

After

  1. 2.25 km SW of Rockport, Washington · 8230 days ago · -1 km deep · 44 km away
  2. 1.87 km ESE of Cowichan Bay, Canada · 8228 days ago · 20 km deep · 100 km away
  3. 1.545 km NE of Marblemount, Washington · 8219 days ago · 3 km deep · 99 km away
  4. 1.63 km SW of Lake Marcel-Stillwater, Washington · 8217 days ago · 2 km deep · 84 km away
  5. 2.15 km SW of Woodway, Washington · 8215 days ago · 26 km deep · 72 km away
  6. 1.61 km SSW of Ames Lake, Washington · 8202 days ago · 4 km deep · 89 km away
  7. 1.54 km W of Orcas, Washington · 8197 days ago · 13 km deep · 60 km away
  8. 1.95 km W of North Saanich, Canada · 8196 days ago · 20 km deep · 96 km away
  9. 1.7Washington-British Columbia border region · 8196 days ago · 27 km deep · 97 km away
  10. 1.56 km NW of North Saanich, Canada · 8195 days ago · 26 km deep · 97 km away
  11. 2.55 km SW of Sultan, Washington · 8194 days ago · 17 km deep · 70 km away
  12. 1.94 km ESE of Lake Marcel-Stillwater, Washington · 8190 days ago · 13 km deep · 86 km away

Before

  1. 3.83 km SW of Clear Lake, Washington · 8233 days ago · 0 km deep · 5 km away · felt by 232
  2. 2.52 km WSW of Orcas, Washington · 8234 days ago · 50 km deep · 58 km away
  3. 1.63 km SE of Oso, Washington · 8238 days ago · 13 km deep · 31 km away
  4. 1.820 km W of Quilcene, Washington · 8242 days ago · 45 km deep · 94 km away
  5. 1.75 km SW of Aldergrove, Canada · 8249 days ago · 19 km deep · 72 km away
  6. 1.57 km W of Aldergrove, Canada · 8251 days ago · 21 km deep · 76 km away
  7. 1.611 km N of Jamestown, Washington · 8252 days ago · 26 km deep · 64 km away
  8. 1.63 km E of La Conner, Washington · 8257 days ago · 0 km deep · 15 km away

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event uw10601403. Read Thu, Oct 1, 2026, 9:14 PM UTC.