Washington earthquakes

M1.6 earthquake 16 km SSE of Carbonado, Washington

A magnitude 1.6 earthquake struck 16 km SSE of Carbonado, Washington on Sun, Apr 20, 2003, 8:37 AM PDT (15:37 UTC), 5 km (3 mi) below the surface.

A larger quake followed: M3.7 4 km SSW of Gorst, 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
1.6 (Md, duration), micro
Magnitude from
Pacific Northwest Seismic Network
Local time
UTC
2003-04-20 15:37:14 UTC
Depth
5.2 km (3.2 mi), shallow
Epicenter
46.942° N, 121.970° 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 0.7 km horizontally, 0.8 km in depth
Magnitude uncertainty
±0.03
Depth from
From location
Station coverage gap
63°
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: 14 in the 60 days after this one and 7 in the 30 days before it.

After

  1. 1.722 km SSE of Mossyrock, Washington · 8552 days ago · 18 km deep · 70 km away
  2. 1.80 km WSW of Bellevue, Washington · 8550 days ago · 29 km deep · 76 km away
  3. 1.83 km S of Skokomish, Washington · 8550 days ago · 45 km deep · 98 km away
  4. 1.75 km N of Dash Point, Washington · 8548 days ago · 19 km deep · 58 km away
  5. 1.7Washington · 8539 days ago · 15 km deep · 87 km away
  6. 2.513 km SSW of Snoqualmie Pass, WA · 8530 days ago · 16 km deep · 53 km away
  7. 3.74 km SSW of Gorst, Washington · 8529 days ago · 25 km deep · 84 km away · felt by 1,560
  8. 1.63 km N of Dash Point, Washington · 8528 days ago · 22 km deep · 57 km away
  9. 1.95 km SE of Wilderness Rim, Washington · 8528 days ago · 11 km deep · 56 km away
  10. 1.5Puget Sound region, Washington · 8527 days ago · 23 km deep · 83 km away
  11. 1.85 km WSW of Seattle, Washington · 8524 days ago · 26 km deep · 79 km away
  12. 1.73 km ENE of Tampico, Washington · 8516 days ago · -1 km deep · 98 km away
  13. 1.524 km ENE of Ashford, Washington · 8515 days ago · -2 km deep · 18 km away
  14. 2.117 km NNE of Trout Lake, Washington · 8511 days ago · -1 km deep · 96 km away

Before

  1. 1.85 km SW of Gorst, Washington · 8571 days ago · 21 km deep · 85 km away
  2. 1.811 km NE of Snoqualmie, Washington · 8572 days ago · 13 km deep · 75 km away
  3. 2.72 km NE of Redmond, Washington · 8572 days ago · 14 km deep · 84 km away
  4. 2.11 km NE of Keyport, Washington · 8574 days ago · 24 km deep · 98 km away
  5. 1.76 km N of Belfair, Washington · 8581 days ago · 23 km deep · 91 km away
  6. 1.715 km SSW of Mossyrock, Washington · 8584 days ago · 17 km deep · 76 km away
  7. 1.54 km W of Wauna, Washington · 8591 days ago · 27 km deep · 74 km away

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event uw10582103. Read Mon, Oct 5, 2026, 1:35 AM UTC.