Washington earthquakes

M2.5 earthquake 2 km WSW of Orcas, Washington

A magnitude 2.5 earthquake struck 2 km WSW of Orcas, Washington on Tue, Mar 16, 2004, 9:34 AM PST (17:34 UTC), 50 km (31 mi) below the surface.

A larger quake followed: M3.8 3 km SW of Clear Lake, 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
2.5 (Md, duration), micro
Magnitude from
Pacific Northwest Seismic Network
Local time
UTC
2004-03-16 17:34:59 UTC
Depth
50.0 km (31.1 mi), shallow
Epicenter
48.589° N, 122.976° 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, 0.7 km in depth
Magnitude uncertainty
±0.03
Depth from
From location
Station coverage gap
80°
Stations used
22

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 6 in the 30 days before it.

After

  1. 3.83 km SW of Clear Lake, Washington · 8234 days ago · 0 km deep · 54 km away · felt by 232
  2. 2.10 km NW of Big Lake, Washington · 8234 days ago · 0 km deep · 58 km away
  3. 2.25 km SW of Rockport, Washington · 8230 days ago · -1 km deep · 98 km away
  4. 1.87 km ESE of Cowichan Bay, Canada · 8229 days ago · 20 km deep · 42 km away
  5. 1.55 km ESE of Cowichan Bay, Canada · 8229 days ago · 13 km deep · 44 km away
  6. 2.15 km SW of Woodway, Washington · 8215 days ago · 26 km deep · 99 km away
  7. 1.54 km W of Orcas, Washington · 8198 days ago · 13 km deep · 3 km away
  8. 1.95 km W of North Saanich, Canada · 8196 days ago · 20 km deep · 39 km away
  9. 1.7Washington-British Columbia border region · 8196 days ago · 27 km deep · 39 km away
  10. 1.56 km NW of North Saanich, Canada · 8196 days ago · 26 km deep · 39 km away

Before

  1. 1.63 km SE of Oso, Washington · 8238 days ago · 13 km deep · 88 km away
  2. 1.820 km W of Quilcene, Washington · 8242 days ago · 45 km deep · 86 km away
  3. 1.75 km SW of Aldergrove, Canada · 8249 days ago · 19 km deep · 58 km away
  4. 1.57 km W of Aldergrove, Canada · 8251 days ago · 21 km deep · 59 km away
  5. 1.611 km N of Jamestown, Washington · 8253 days ago · 26 km deep · 40 km away
  6. 1.63 km E of La Conner, Washington · 8258 days ago · 0 km deep · 45 km away

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event uw10600933. Read Fri, Oct 2, 2026, 11:16 AM UTC.