Washington earthquakes

M2.1 earthquake Washington

A magnitude 2.1 earthquake struck in Washington on Wed, Oct 31, 1984, 8:40 PM PST (04:40 UTC), 0 km (0 mi) below the surface.

A larger quake followed: M2.2 13 km NW of Banks Lake South, Washington. This one was a foreshock.

George 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
2.1 (md), micro
Local time
UTC
1984-11-01 04:40:24 UTC
Depth
0.1 km (0.1 mi), shallow
Epicenter
47.048° N, 120.085° 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 1.2 km horizontally
Magnitude uncertainty
±0.14
Depth from
From location
Station coverage gap
52°
Stations used
24

Nearest places

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

Nearby

Within 100 km, magnitude 1.5 and up: 15 in the 60 days after this one and 4 in the 30 days before it.

After

  1. 1.915 km SSW of Vantage, Washington · 15299 days ago · 3 km deep · 26 km away
  2. 1.7Washington · 15299 days ago · 0 km deep · 26 km away
  3. 2.213 km NW of Banks Lake South, Washington · 15298 days ago · 3 km deep · 92 km away
  4. 1.89 km SW of Roslyn, Washington · 15294 days ago · 0 km deep · 75 km away
  5. 1.913 km NNW of Vantage, Washington · 15291 days ago · 0 km deep · 0 km away
  6. 1.810 km W of Entiat, Washington · 15273 days ago · -1 km deep · 73 km away
  7. 1.58 km N of Waterville, Washington · 15265 days ago · 5 km deep · 75 km away
  8. 1.82 km ESE of Entiat, Washington · 15260 days ago · -1 km deep · 69 km away
  9. 1.52 km SE of Entiat, Washington · 15259 days ago · 6 km deep · 68 km away
  10. 2.615 km NNW of Vantage, Washington · 15257 days ago · -1 km deep · 2 km away
  11. 2.315 km NW of Vantage, Washington · 15256 days ago · 8 km deep · 2 km away
  12. 2.616 km NNW of Vantage, Washington · 15255 days ago · 7 km deep · 3 km away
  13. 1.714 km NW of Vantage, Washington · 15255 days ago · 1 km deep · 1 km away
  14. 2.315 km NNW of Vantage, Washington · 15253 days ago · 0 km deep · 2 km away
  15. 1.513 km ENE of Cliffdell, Washington · 15249 days ago · 0 km deep · 62 km away

Before

  1. 2.315 km NNW of Vantage, Washington · 15302 days ago · 0 km deep · 2 km away
  2. 1.97 km E of Snoqualmie Pass, Washington · 15310 days ago · -1 km deep · 99 km away
  3. 1.66 km N of Entiat, Washington · 15317 days ago · 0 km deep · 77 km away
  4. 1.913 km ENE of Cliffdell, Washington · 15330 days ago · 1 km deep · 62 km away

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event uw10180313. Read Wed, Sep 23, 2026, 6:16 AM UTC.