Canada earthquakes

M1.5 earthquake British Columbia, Canada

A magnitude 1.5 earthquake struck in British Columbia, Canada on Sun, Aug 15, 2004, 9:23 PM PDT (04:23 UTC), 24 km (15 mi) below the surface.

A larger quake followed: M2.4 4 km NNE of Anacortes, 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
1.5 (Md, duration), micro
Magnitude from
Pacific Northwest Seismic Network
Local time
UTC
2004-08-16 04:23:13 UTC
Depth
23.6 km (14.7 mi), shallow
Epicenter
49.098° N, 123.191° 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 1.1 km horizontally, 0.4 km in depth
Magnitude uncertainty
±0.05
Depth from
Operator assigned
Station coverage gap
278°, poorly surrounded by stations
Stations used
7

Nearest places

Distance and direction from each place to the epicenter, with its forecast.

Nearby

Within 100 km, magnitude 1.5 and up: 13 in the 60 days after this one and 5 in the 30 days before it.

After

  1. 1.86 km W of Orcas, Washington · 8080 days ago · 13 km deep · 57 km away
  2. 1.73 km NNW of Sumas, Washington · 8080 days ago · 0 km deep · 67 km away
  3. 1.54 km NE of Anacortes, Washington · 8076 days ago · 16 km deep · 76 km away
  4. 2.44 km NNE of Anacortes, Washington · 8076 days ago · 15 km deep · 76 km away
  5. 2.03 km NE of Anacortes, Washington · 8075 days ago · 17 km deep · 77 km away
  6. 1.5Washington · 8075 days ago · 7 km deep · 77 km away
  7. 1.7British Columbia, Canada · 8072 days ago · 1 km deep · 88 km away
  8. 1.97 km ENE of Coquitlam, Canada · 8071 days ago · 3 km deep · 44 km away
  9. 1.717 km W of Richmond, Canada · 8060 days ago · 0 km deep · 15 km away
  10. 1.92 km SE of Sudden Valley, Washington · 8059 days ago · 20 km deep · 77 km away
  11. 2.27 km SSE of Maple Falls, Washington · 8057 days ago · -1 km deep · 87 km away
  12. 1.96 km ENE of Acme, Washington · 8049 days ago · 14 km deep · 88 km away
  13. 1.52 km ESE of Sudden Valley, Washington · 8035 days ago · 19 km deep · 77 km away

Before

  1. 1.614 km SSW of Chilliwack, Canada · 8089 days ago · -1 km deep · 84 km away
  2. 2.212 km NE of Fairwinds, Canada · 8093 days ago · 23 km deep · 66 km away
  3. 2.914 km NE of Fairwinds, Canada · 8096 days ago · 67 km deep · 63 km away
  4. 3.113 km NE of Fairwinds, Canada · 8096 days ago · 66 km deep · 64 km away
  5. 1.718 km SSW of Point Roberts, Washington · 8112 days ago · 15 km deep · 30 km away

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event uw10611548. Read Fri, Oct 2, 2026, 9:48 PM UTC.