Washington earthquakes

M2.0 earthquake 6 km ESE of Alger, Washington

A magnitude 2.0 earthquake struck 6 km ESE of Alger, Washington on Sun, Sep 8, 1991, 9:22 PM PDT (04:22 UTC), 8 km (5 mi) below the surface.

A larger quake followed: M3.0 6 km NW of Orcas, Washington. This one was a foreshock.

Sedro-Woolley 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
2.0 (Md, duration), micro
Magnitude from
Pacific Northwest Seismic Network
Local time
UTC
1991-09-09 04:22:01 UTC
Depth
7.7 km (4.8 mi), shallow
Epicenter
48.598° N, 122.255° 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 1.3 km horizontally, 1.6 km in depth
Magnitude uncertainty
±0.05
Depth from
From location
Station coverage gap
167°
Stations used
12

Nearest places

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

Nearby

Within 100 km, magnitude 1.5 and up: 13 in the 60 days after this one and 17 in the 30 days before it.

After

  1. 2.618 km SSE of Marblemount, Washington · 12805 days ago · 9 km deep · 71 km away
  2. 2.36 km NW of Orcas, Washington · 12801 days ago · 18 km deep · 55 km away
  3. 3.06 km NW of Orcas, Washington · 12801 days ago · 19 km deep · 55 km away
  4. 2.04 km NE of Bryant, Washington · 12795 days ago · 11 km deep · 38 km away
  5. 2.05 km NNE of Lake Marcel-Stillwater, Washington · 12789 days ago · 17 km deep · 99 km away
  6. 2.413 km SSW of Blyn, Washington · 12779 days ago · 42 km deep · 98 km away
  7. 1.63 km E of Deming, Washington · 12774 days ago · 1 km deep · 26 km away
  8. 1.85 km NNE of Kingston, Washington · 12773 days ago · 22 km deep · 86 km away
  9. 1.59 km NNW of Ault Field, Washington · 12769 days ago · 50 km deep · 39 km away
  10. 2.010 km E of Mission, Canada · 12755 days ago · 4 km deep · 60 km away
  11. 1.92 km NE of Deming, Washington · 12752 days ago · -1 km deep · 27 km away
  12. 1.82 km N of Big Lake, Washington · 12751 days ago · -1 km deep · 19 km away
  13. 1.52 km NNE of Eastmont, Washington · 12750 days ago · 16 km deep · 76 km away

Before

  1. 1.84 km NW of Marrowstone, Washington · 12808 days ago · 53 km deep · 67 km away
  2. 1.73 km S of Maple Falls, Washington · 12808 days ago · 16 km deep · 35 km away
  3. 2.01 km NW of Lake Roesiger, Washington · 12817 days ago · 11 km deep · 71 km away
  4. 1.724 km NNE of Concrete, Washington · 12818 days ago · -1 km deep · 49 km away
  5. 2.25 km ESE of Alger, Washington · 12821 days ago · 2 km deep · 2 km away
  6. 1.98 km SSE of Coupeville, Washington · 12822 days ago · 20 km deep · 58 km away
  7. 1.81 km N of Lake Roesiger, Washington · 12822 days ago · 11 km deep · 71 km away
  8. 1.91 km NW of Lake Roesiger, Washington · 12823 days ago · 11 km deep · 71 km away
  9. 2.21 km NNW of Lake Roesiger, Washington · 12825 days ago · 11 km deep · 71 km away
  10. 2.04 km N of Friday Harbor, Washington · 12826 days ago · 54 km deep · 57 km away
  11. 1.52 km SSE of Orcas, Washington · 12827 days ago · 56 km deep · 50 km away
  12. 2.022 km E of Darrington, Washington · 12829 days ago · 0 km deep · 82 km away
  13. 2.021 km ESE of Darrington, Washington · 12830 days ago · 0 km deep · 81 km away
  14. 2.517 km S of Glacier, Washington · 12830 days ago · -1 km deep · 28 km away
  15. 1.55 km NE of Marrowstone, Washington · 12830 days ago · 26 km deep · 64 km away
  16. 1.56 km ESE of Alger, Washington · 12834 days ago · -1 km deep · 1 km away
  17. 2.07 km W of Aldergrove, Canada · 12835 days ago · 71 km deep · 55 km away

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event uw10276433. Read Fri, Oct 2, 2026, 12:57 PM UTC.