M1.6 earthquake 3 km SE of Oso, Washington
A magnitude 1.6 earthquake struck 3 km SE of Oso, Washington on Fri, Mar 12, 2004, 6:29 PM PST (02:29 UTC), 13 km (8 mi) below the surface.
A larger quake followed: M3.8 3 km SW of Clear Lake, Washington. This one was a foreshock.
Map
Where this earthquake was located, with the others nearby. Select one for its page.
The earthquake
- Magnitude
- 1.6 (Md, duration), micro
- Magnitude from
- Pacific Northwest Seismic Network
- Local time
- UTC
- 2004-03-13 02:29:02 UTC
- Depth
- 12.9 km (8.0 mi), shallow
- Epicenter
- 48.251° N, 121.899° 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 0.3 km horizontally, 0.5 km in depth
- Magnitude uncertainty
- ±0.05
- Depth from
- From location
- Station coverage gap
- 113°
- Stations used
- 11
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 4 in the 30 days before it.
After
- 2.52 km WSW of Orcas, Washington · 8234 days ago · 50 km deep · 88 km away
- 3.83 km SW of Clear Lake, Washington · 8233 days ago · 0 km deep · 35 km away · felt by 232
- 2.10 km NW of Big Lake, Washington · 8233 days ago · 0 km deep · 31 km away
- 2.25 km SW of Rockport, Washington · 8230 days ago · -1 km deep · 29 km away
- 1.545 km NE of Marblemount, Washington · 8219 days ago · 3 km deep · 90 km away
- 1.63 km SW of Lake Marcel-Stillwater, Washington · 8217 days ago · 2 km deep · 65 km away
- 2.15 km SW of Woodway, Washington · 8215 days ago · 26 km deep · 67 km away
- 1.61 km SSW of Ames Lake, Washington · 8202 days ago · 4 km deep · 70 km away
- 1.54 km W of Orcas, Washington · 8197 days ago · 13 km deep · 90 km away
- 2.55 km SW of Sultan, Washington · 8194 days ago · 17 km deep · 48 km away
- 2.32 km SSE of Maple Heights-Lake Desire, Washington · 8190 days ago · 22 km deep · 93 km away
- 1.94 km ESE of Lake Marcel-Stillwater, Washington · 8190 days ago · 13 km deep · 64 km away
Before
- 1.75 km SW of Aldergrove, Canada · 8249 days ago · 19 km deep · 97 km away
- 1.611 km N of Jamestown, Washington · 8252 days ago · 26 km deep · 86 km away
- 1.63 km E of La Conner, Washington · 8257 days ago · 0 km deep · 43 km away
- 1.94 km ESE of Cathcart, Washington · 8267 days ago · 28 km deep · 48 km away
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Sources
From the USGS Earthquake Hazards Program and its partner networks, event uw10600323. Read Thu, Oct 1, 2026, 8:10 PM UTC.