Washington earthquakes

M1.5 earthquake 1 km W of Chico, Washington

A magnitude 1.5 earthquake struck 1 km W of Chico, Washington on Wed, Oct 10, 1979, 4:54 AM PDT (11:54 UTC), 25 km (15 mi) below the surface.

A larger quake followed: M2.6 17 km SSE of Carbonado, Washington. This one was a foreshock.

Chico forecastMore in Washington

Map

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

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The earthquake

Magnitude
1.5 (md), micro
Local time
UTC
1979-10-10 11:54:23 UTC
Depth
24.9 km (15.5 mi), shallow
Epicenter
47.614° N, 122.736° 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 0.9 km horizontally, 1.9 km in depth
Magnitude uncertainty
±0.08
Depth from
From location
Station coverage gap
103°
Stations used
13

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 5 in the 30 days before it.

After

  1. 1.53 km S of Kingston, Washington · 17155 days ago · 53 km deep · 25 km away
  2. 1.610 km S of Metchosin, Canada · 17141 days ago · 39 km deep · 96 km away
  3. 2.40 km WSW of Tulalip Bay, Washington · 17136 days ago · 29 km deep · 56 km away
  4. 2.617 km SSE of Carbonado, Washington · 17132 days ago · 9 km deep · 95 km away
  5. 1.62 km N of Hansville, Washington · 17126 days ago · 43 km deep · 39 km away
  6. 1.63 km ENE of Manchester, Washington · 17126 days ago · 3 km deep · 19 km away
  7. 2.03 km SSE of Priest Point, Washington · 17124 days ago · 22 km deep · 57 km away
  8. 1.54 km SSE of Woods Creek, Washington · 17124 days ago · 9 km deep · 69 km away
  9. 1.63 km WSW of Federal Way, Washington · 17122 days ago · 54 km deep · 44 km away
  10. 1.50 km WNW of Pacific, Washington · 17117 days ago · 15 km deep · 53 km away
  11. 1.52 km ENE of Sammamish, Washington · 17114 days ago · 17 km deep · 51 km away
  12. 2.516 km SE of Friday Harbor, Washington · 17107 days ago · 54 km deep · 91 km away

Before

  1. 2.123 km NNW of Hoodsport, Washington · 17161 days ago · 45 km deep · 38 km away
  2. 2.16 km SW of Clinton, Washington · 17167 days ago · 25 km deep · 43 km away
  3. 1.52 km E of Belfair, Washington · 17180 days ago · -1 km deep · 19 km away
  4. 1.62 km NNE of Klahanie, Washington · 17182 days ago · 4 km deep · 56 km away
  5. 2.12 km ESE of Quilcene, Washington · 17184 days ago · 48 km deep · 23 km away

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event uw10850803. Read Mon, Sep 28, 2026, 11:28 PM UTC.