Canada earthquakes

M1.7 earthquake 8 km SE of Oak Bay, Canada

A magnitude 1.7 earthquake struck 8 km SE of Oak Bay, Canada on Tue, Oct 2, 1973, 9:23 PM PDT (04:23 UTC), 22 km (14 mi) below the surface.

A larger quake followed: M2.8 4 km N of Hansville, Washington. This one was a foreshock.

Oak Bay forecastMore in Canada

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), micro
Local time
UTC
1973-10-03 04:23:53 UTC
Depth
22.0 km (13.7 mi), shallow
Epicenter
48.392° N, 123.236° 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 1.5 km horizontally, 5.5 km in depth
Magnitude uncertainty
±0.11
Depth from
From location
Station coverage gap
172°
Stations used
6

Nearest places

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

Nearby

Within 100 km, magnitude 1.5 and up: 11 in the 60 days after this one and 15 in the 30 days before it.

After

  1. 2.84 km N of Hansville, Washington · 19345 days ago · 23 km deep · 70 km away
  2. 1.61 km ENE of Indianola, Washington · 19345 days ago · 13 km deep · 90 km away
  3. 1.66 km SW of Woodway, Washington · 19340 days ago · 21 km deep · 92 km away
  4. 1.64 km S of Lake Cavanaugh, Washington · 19336 days ago · 13 km deep · 91 km away
  5. 1.57 km WNW of Gorst, Washington · 19331 days ago · 20 km deep · 99 km away
  6. 2.10 km SW of Oak Harbor, Washington · 19312 days ago · 16 km deep · 45 km away
  7. 1.95 km ESE of Alger, Washington · 19312 days ago · 14 km deep · 74 km away
  8. 2.02 km SSE of Coupeville, Washington · 19309 days ago · 32 km deep · 47 km away
  9. 2.78 km NW of Friday Harbor, Washington · 19305 days ago · 7 km deep · 25 km away
  10. 1.610 km NNW of Anacortes, Washington · 19305 days ago · 13 km deep · 50 km away
  11. 2.410 km ESE of Deming, Washington · 19299 days ago · 3 km deep · 97 km away

Before

  1. 1.61 km NNW of Hansville, Washington · 19349 days ago · 20 km deep · 71 km away
  2. 1.710 km SSE of Port Angeles East, Washington · 19350 days ago · 46 km deep · 41 km away
  3. 1.67 km NNE of Port Ludlow, Washington · 19351 days ago · 4 km deep · 62 km away
  4. 1.55 km SSW of Woodway, Washington · 19351 days ago · 16 km deep · 94 km away
  5. 2.815 km NNE of Oak Bay, Canada · 19356 days ago · 50 km deep · 21 km away
  6. 2.34 km SW of Geneva, Washington · 19364 days ago · 24 km deep · 69 km away
  7. 2.011 km SW of Seabeck, Washington · 19364 days ago · 9 km deep · 94 km away
  8. 2.41 km NE of Shoreline, Washington · 19364 days ago · 23 km deep · 97 km away
  9. 2.116 km W of Quilcene, Washington · 19365 days ago · 45 km deep · 67 km away
  10. 1.55 km N of Marrowstone, Washington · 19366 days ago · 24 km deep · 52 km away
  11. 1.86 km NW of Friday Harbor, Washington · 19369 days ago · 5 km deep · 24 km away
  12. 1.98 km NW of Friday Harbor, Washington · 19369 days ago · 6 km deep · 26 km away
  13. 2.45 km ESE of Nooksack, Washington · 19369 days ago · 21 km deep · 93 km away
  14. 1.85 km ESE of Nooksack, Washington · 19370 days ago · 15 km deep · 92 km away
  15. 2.15 km ESE of Port Townsend, Washington · 19375 days ago · 59 km deep · 52 km away

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event uw10857323. Read Tue, Sep 22, 2026, 10:29 AM UTC.