Canada earthquakes

M1.7 earthquake 15 km ESE of Oak Bay, Canada

A magnitude 1.7 earthquake struck 15 km ESE of Oak Bay, Canada on Thu, Aug 20, 1987, 7:08 AM PDT (14:08 UTC), 5 km (3 mi) below the surface.

A larger quake followed: M2.0 2 km WSW of Birch Bay, 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
1987-08-20 14:08:15 UTC
Depth
4.6 km (2.9 mi), shallow
Epicenter
48.397° N, 123.107° 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 2.0 km horizontally, 5.7 km in depth
Magnitude uncertainty
±0.08
Depth from
Operator assigned
Station coverage gap
165°
Stations used
12

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 6 in the 30 days before it.

After

  1. 1.72 km SSW of Birch Bay, Washington · 14277 days ago · 13 km deep · 62 km away
  2. 1.65 km NNW of Orcas, Washington · 14277 days ago · 18 km deep · 29 km away
  3. 2.02 km WSW of Birch Bay, Washington · 14270 days ago · 15 km deep · 62 km away
  4. 1.83 km NW of Bainbridge Island, Washington · 14264 days ago · 20 km deep · 93 km away
  5. 1.515 km E of North Saanich, Canada · 14259 days ago · 50 km deep · 32 km away
  6. 3.04 km WSW of Langley, Canada · 14251 days ago · 1 km deep · 82 km away
  7. 2.34 km WSW of Langley, Canada · 14249 days ago · 4 km deep · 82 km away
  8. 2.82 km N of Port Townsend, Washington · 14248 days ago · 21 km deep · 39 km away
  9. 2.85 km NE of Blyn, Washington · 14248 days ago · 55 km deep · 40 km away
  10. 2.15 km NE of Kingston, Washington · 14243 days ago · 16 km deep · 79 km away
  11. 1.87 km SSW of Quilcene, Washington · 14236 days ago · 47 km deep · 71 km away
  12. 1.918 km SE of Oak Bay, Canada · 14221 days ago · 23 km deep · 8 km away

Before

  1. 1.87 km WNW of Gorst, Washington · 14288 days ago · 11 km deep · 96 km away
  2. 1.76 km SSW of Geneva, Washington · 14290 days ago · 12 km deep · 59 km away
  3. 1.55 km SSW of Geneva, Washington · 14292 days ago · 12 km deep · 60 km away
  4. 2.06 km SW of Geneva, Washington · 14292 days ago · 12 km deep · 58 km away
  5. 2.71 km N of Port Townsend, Washington · 14292 days ago · 22 km deep · 39 km away
  6. 1.74 km E of Maple Falls, Washington · 14303 days ago · 0 km deep · 99 km away

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event uw10223998. Read Tue, Sep 22, 2026, 9:32 PM UTC.