M1.8 earthquake 4 km ESE of Humptulips, Washington
A magnitude 1.8 earthquake struck 4 km ESE of Humptulips, Washington on Sun, Mar 20, 2005, 3:08 PM PST (23:08 UTC), 18 km (11 mi) below the surface.
Map
Where this earthquake was located, with the others nearby. Select one for its page.
The earthquake
- Magnitude
- 1.8 (Md, duration), micro
- Magnitude from
- Pacific Northwest Seismic Network
- Local time
- UTC
- 2005-03-20 23:08:02 UTC
- Depth
- 18.3 km (11.4 mi), shallow
- Epicenter
- 47.212° N, 123.904° 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 3.2 km horizontally, 2.3 km in depth
- Magnitude uncertainty
- ±0.03
- Depth from
- From location
- Station coverage gap
- 192°, poorly surrounded by stations
- Stations used
- 14
Nearest places
Distance and direction from each place to the epicenter, with its forecast.
Nearby
Within 100 km, magnitude 1.5 and up: 1 in the 60 days after this one and 4 in the 30 days before it.
After
Before
- 3.35 km WSW of Home, Washington · 7874 days ago · 24 km deep · 82 km away · felt by 420
- 1.53 km ENE of Seabeck, Washington · 7884 days ago · 16 km deep · 97 km away
- 2.35 km SSW of Skokomish, Washington · 7887 days ago · 18 km deep · 56 km away
- 1.613 km WSW of Tokeland, Washington · 7893 days ago · 41 km deep · 63 km away
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Sources
From the USGS Earthquake Hazards Program and its partner networks, event uw10659883. Read Fri, Oct 2, 2026, 5:18 PM UTC.