Washington earthquakes

M1.8 earthquake Olympic Peninsula, Washington

A magnitude 1.8 earthquake struck in the Olympic Peninsula, Washington on Sun, Nov 21, 2004, 4:32 PM PST (00:32 UTC), -1 km (0 mi) below the surface.

A larger quake followed: M2.2 1 km WNW of Redmond, Washington. This one was a foreshock.

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Map

Where this earthquake was located, with the others nearby. Select one for its page.

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The earthquake

Magnitude
1.8 (Md, duration), micro
Magnitude from
Pacific Northwest Seismic Network
Local time
UTC
2004-11-22 00:32:39 UTC
Depth
-0.5 km (-0.3 mi), shallow
Epicenter
47.563° N, 123.157° W
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
±0.04
Depth from
Operator assigned
Station coverage gap
76°
Stations used
22

Nearest places

Distance and direction from each place to the epicenter, with its forecast.

Nearby

Within 100 km, magnitude 1.5 and up: 9 in the 60 days after this one and 3 in the 30 days before it.

After

  1. 2.15 km WSW of Port Hadlock-Irondale, Washington · 7983 days ago · 21 km deep · 55 km away
  2. 2.110 km NE of Forks, Washington · 7959 days ago · 20 km deep · 100 km away
  3. 1.78 km W of Coupeville, Washington · 7952 days ago · 26 km deep · 79 km away
  4. 2.21 km WNW of Redmond, Washington · 7948 days ago · 25 km deep · 77 km away
  5. 1.59 km WNW of Ault Field, Washington · 7938 days ago · 23 km deep · 92 km away
  6. 1.90 km SE of Echo Lake, Washington · 7936 days ago · 9 km deep · 87 km away
  7. 1.66 km ENE of Lake Marcel-Stillwater, Washington · 7930 days ago · 20 km deep · 100 km away
  8. 1.53 km ENE of Carnation, Washington · 7929 days ago · 24 km deep · 98 km away
  9. 1.914 km SSE of Oak Bay, Canada · 7925 days ago · 47 km deep · 87 km away

Before

  1. 2.22 km NE of Camano, Washington · 7986 days ago · 29 km deep · 85 km away
  2. 1.54 km N of White Center, Washington · 7997 days ago · 28 km deep · 60 km away
  3. 1.62 km SE of Port Hadlock-Irondale, Washington · 8006 days ago · 25 km deep · 59 km away

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event uw10647183. Read Fri, Oct 2, 2026, 11:23 AM UTC.