Washington earthquakes

M1.8 earthquake 4 km WSW of Chico, Washington

A magnitude 1.8 earthquake struck 4 km WSW of Chico, Washington on Thu, Mar 17, 1988, 9:21 PM PST (05:21 UTC), 15 km (9 mi) below the surface.

A larger quake followed: M2.8 1 km W of Wauna, Washington. This one was a foreshock.

Erlands Point-Kitsap Lake forecastMore in Washington

Map

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

Open the live map with earthquakes

The earthquake

Magnitude
1.8 (md), micro
Local time
UTC
1988-03-18 05:21:11 UTC
Depth
15.0 km (9.3 mi), shallow
Epicenter
47.592° N, 122.756° 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, 1.1 km in depth
Magnitude uncertainty
±0.10
Depth from
Operator assigned
Station coverage gap
136°
Stations used
21

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 8 in the 30 days before it.

After

  1. 1.54 km WSW of Artondale, Washington · 14074 days ago · 24 km deep · 34 km away
  2. 2.04 km SW of Inglewood-Finn Hill, Washington · 14072 days ago · 19 km deep · 37 km away
  3. 1.71 km SW of Erlands Point-Kitsap Lake, Washington · 14071 days ago · 16 km deep · 3 km away
  4. 1.68 km E of Bucoda, Washington · 14071 days ago · 8 km deep · 88 km away
  5. 1.516 km SW of Snoqualmie Pass, Washington · 14053 days ago · 10 km deep · 95 km away
  6. 2.81 km W of Wauna, Washington · 14053 days ago · 22 km deep · 25 km away
  7. 1.68 km NW of Lofall, Washington · 14052 days ago · 18 km deep · 29 km away
  8. 1.65 km SW of Inglewood-Finn Hill, Washington · 14043 days ago · 18 km deep · 37 km away
  9. 1.84 km NE of Tanner, Washington · 14037 days ago · 12 km deep · 80 km away
  10. 1.73 km ENE of Granite Falls, Washington · 14036 days ago · -1 km deep · 84 km away
  11. 1.61 km W of Wauna, Washington · 14022 days ago · 24 km deep · 24 km away
  12. 1.519 km SSE of Carbonado, Washington · 14018 days ago · 11 km deep · 96 km away

Before

  1. 2.02 km ESE of Cathcart, Washington · 14079 days ago · 22 km deep · 58 km away
  2. 1.81 km SW of Erlands Point-Kitsap Lake, Washington · 14080 days ago · -1 km deep · 3 km away
  3. 1.72 km WNW of Lake Marcel-Stillwater, Washington · 14081 days ago · 25 km deep · 61 km away
  4. 3.92 km WNW of Puyallup, Washington · 14081 days ago · 64 km deep · 55 km away
  5. 1.54 km E of Lake Ketchum, Washington · 14083 days ago · 13 km deep · 84 km away
  6. 1.51 km WSW of Lake Morton-Berrydale, Washington · 14083 days ago · 63 km deep · 56 km away
  7. 2.42 km NNW of Custer, Washington · 14090 days ago · 54 km deep · 47 km away
  8. 1.71 km N of Lake Forest Park, Washington · 14092 days ago · 16 km deep · 41 km away

Earthquakes todayWashington earthquakesLive radar here

Sources

From the USGS Earthquake Hazards Program and its partner networks, event uw10229448. Read Tue, Sep 29, 2026, 2:05 PM UTC.