M2.0 earthquake 9 km N of Anacortes, Washington
A magnitude 2.0 earthquake struck 9 km N of Anacortes, Washington on Fri, Mar 30, 1973, 11:51 PM PST (07:51 UTC), 3 km (2 mi) below the surface.
A larger quake followed: M3.7 7 km W of Lofall, Washington. This one was a foreshock.
Map
Where this earthquake was located, with the others nearby. Select one for its page.
The earthquake
- Magnitude
- 2.0 (md), micro
- Local time
- UTC
- 1973-03-31 07:51:12 UTC
- Depth
- 3.5 km (2.1 mi), shallow
- Epicenter
- 48.598° N, 122.602° W
- Region
- Washington
- 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 2.1 km horizontally
- Magnitude uncertainty
- ±0.09
- Depth from
- From location
- Station coverage gap
- 194°, poorly surrounded by stations
- Stations used
- 3
Nearest places
Distance and direction from each place to the epicenter, with its forecast.
Nearby
Within 100 km, magnitude 1.5 and up: 6 in the 60 days after this one and 4 in the 30 days before it.
After
- 3.77 km W of Lofall, Washington · 19520 days ago · 50 km deep · 87 km away
- 1.71 km SSE of Indianola, Washington · 19510 days ago · 29 km deep · 96 km away
- 2.14 km ESE of Kingston, Washington · 19503 days ago · 21 km deep · 92 km away
- 1.711 km WNW of Ault Field, Washington · 19500 days ago · 23 km deep · 30 km away
- 1.97 km ESE of Quilcene, Washington · 19495 days ago · 15 km deep · 89 km away
- 2.66 km SSW of Hansville, Washington · 19493 days ago · 21 km deep · 82 km away
Before
- 1.93 km W of Hansville, Washington · 19540 days ago · 5 km deep · 76 km away
- 1.89 km E of Oak Harbor, Washington · 19550 days ago · 34 km deep · 36 km away
- 2.54 km W of Lake Cavanaugh, Washington · 19559 days ago · 17 km deep · 49 km away
- 2.74 km N of Jamestown, Washington · 19562 days ago · 25 km deep · 59 km away
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Sources
From the USGS Earthquake Hazards Program and its partner networks, event uw10856058. Read Tue, Sep 22, 2026, 8:52 AM UTC.