Canada earthquakes

M1.7 earthquake 5 km SW of Aldergrove, Canada

A magnitude 1.7 earthquake struck 5 km SW of Aldergrove, Canada on Mon, Mar 1, 2004, 11:10 PM PST (07:10 UTC), 19 km (12 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
1.7 (Md, duration), micro
Magnitude from
Pacific Northwest Seismic Network
Local time
UTC
2004-03-02 07:10:35 UTC
Depth
19.0 km (11.8 mi), shallow
Epicenter
49.022° N, 122.530° W
Region
Canada
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 2.7 km horizontally, 2.8 km in depth
Magnitude uncertainty
±0.05
Depth from
From location
Station coverage gap
228°, poorly surrounded by stations
Stations used
13

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 5 in the 30 days before it.

After

  1. 1.63 km SE of Oso, Washington · 8238 days ago · 13 km deep · 97 km away
  2. 2.52 km WSW of Orcas, Washington · 8234 days ago · 50 km deep · 58 km away
  3. 3.83 km SW of Clear Lake, Washington · 8233 days ago · 0 km deep · 67 km away · felt by 232
  4. 2.10 km NW of Big Lake, Washington · 8233 days ago · 0 km deep · 72 km away
  5. 2.25 km SW of Rockport, Washington · 8230 days ago · -1 km deep · 90 km away
  6. 1.87 km ESE of Cowichan Bay, Canada · 8228 days ago · 20 km deep · 80 km away
  7. 1.55 km ESE of Cowichan Bay, Canada · 8228 days ago · 13 km deep · 81 km away
  8. 1.58 km SSW of Squamish, Canada · 8216 days ago · 10 km deep · 83 km away
  9. 1.54 km W of Orcas, Washington · 8197 days ago · 13 km deep · 58 km away
  10. 1.95 km W of North Saanich, Canada · 8196 days ago · 20 km deep · 81 km away
  11. 1.7Washington-British Columbia border region · 8196 days ago · 27 km deep · 78 km away
  12. 1.56 km NW of North Saanich, Canada · 8196 days ago · 26 km deep · 78 km away

Before

  1. 1.57 km W of Aldergrove, Canada · 8251 days ago · 21 km deep · 4 km away
  2. 1.611 km N of Jamestown, Washington · 8252 days ago · 26 km deep · 96 km away
  3. 1.63 km E of La Conner, Washington · 8257 days ago · 0 km deep · 71 km away
  4. 1.86 km W of Conway, Washington · 8268 days ago · 10 km deep · 75 km away
  5. 2.44 km ESE of La Conner, Washington · 8270 days ago · -1 km deep · 72 km away

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event uw10597888. Read Thu, Oct 1, 2026, 10:04 PM UTC.