M1.9 earthquake 18 km SE of Oak Bay, Canada
A magnitude 1.9 earthquake struck 18 km SE of Oak Bay, Canada on Fri, Oct 16, 1987, 5:33 PM PDT (00:33 UTC), 23 km (14 mi) below the surface.
A larger quake followed: M2.4 1 km E of Ferndale, Washington. This one was a foreshock.
Map
Where this earthquake was located, with the others nearby. Select one for its page.
The earthquake
- Magnitude
- 1.9 (md), micro
- Local time
- UTC
- 1987-10-17 00:33:47 UTC
- Depth
- 22.7 km (14.1 mi), shallow
- Epicenter
- 48.329° N, 123.127° 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 0.1 km horizontally, 0.1 km in depth
- Magnitude uncertainty
- ±0.07
- Depth from
- Operator assigned
- Station coverage gap
- 57°
- Stations used
- 25
Nearest places
Distance and direction from each place to the epicenter, with its forecast.
Nearby
Within 100 km, magnitude 1.5 and up: 8 in the 60 days after this one and 5 in the 30 days before it.
After
- 1.99 km NNW of Ault Field, Washington · 14207 days ago · 52 km deep · 32 km away
- 1.91 km SW of Rocky Point, Washington · 14204 days ago · 17 km deep · 89 km away
- 2.41 km E of Ferndale, Washington · 14199 days ago · 18 km deep · 71 km away
- 2.210 km N of Quilcene, Washington · 14198 days ago · 19 km deep · 50 km away
- 1.54 km E of Port Ludlow, Washington · 14181 days ago · 16 km deep · 59 km away
- 1.83 km WSW of Shoreline, Washington · 14181 days ago · 14 km deep · 86 km away
- 2.115 km SW of Brinnon, Washington · 14165 days ago · 44 km deep · 82 km away
- 1.81 km SSW of Navy Yard City, Washington · 14164 days ago · 22 km deep · 94 km away
Before
- 1.87 km SSW of Quilcene, Washington · 14237 days ago · 47 km deep · 64 km away
- 2.15 km NE of Kingston, Washington · 14243 days ago · 16 km deep · 74 km away
- 2.85 km NE of Blyn, Washington · 14248 days ago · 55 km deep · 33 km away
- 2.82 km N of Port Townsend, Washington · 14248 days ago · 21 km deep · 35 km away
- 2.34 km WSW of Langley, Canada · 14249 days ago · 4 km deep · 90 km away
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Sources
From the USGS Earthquake Hazards Program and its partner networks, event uw10225708. Read Wed, Sep 23, 2026, 4:09 AM UTC.