Washington earthquakes

M1.6 earthquake 20 km NW of Orcas, Washington

A magnitude 1.6 earthquake struck 20 km NW of Orcas, Washington on Wed, Aug 15, 1990, 7:13 PM PDT (02:13 UTC), 54 km (33 mi) below the surface.

A larger quake followed: M2.4 6 km W of Lake Cavanaugh, 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
1990-08-16 02:13:45 UTC
Depth
53.7 km (33.4 mi), shallow
Epicenter
48.752° N, 123.107° 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 0.6 km horizontally, 0.9 km in depth
Magnitude uncertainty
±0.09
Depth from
From location
Station coverage gap
39°
Stations used
20

Nearest places

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

Nearby

Within 100 km, magnitude 1.5 and up: 11 in the 60 days after this one and 10 in the 30 days before it.

After

  1. 1.86 km NE of Deming, Washington · 13195 days ago · 13 km deep · 71 km away
  2. 1.65 km NE of Bryant, Washington · 13195 days ago · 11 km deep · 90 km away
  3. 1.75 km E of Deming, Washington · 13194 days ago · 4 km deep · 71 km away
  4. 2.00 km S of Sudden Valley, Washington · 13178 days ago · 15 km deep · 56 km away
  5. 2.46 km W of Lake Cavanaugh, Washington · 13177 days ago · 8 km deep · 88 km away
  6. 1.55 km ENE of Deming, Washington · 13176 days ago · 13 km deep · 71 km away
  7. 1.924 km NNW of Chilliwack, Canada · 13169 days ago · 2 km deep · 99 km away
  8. 2.117 km S of Glacier, Washington · 13164 days ago · -1 km deep · 86 km away
  9. 2.0Washington · 13163 days ago · -1 km deep · 86 km away
  10. 1.64 km NE of Ferndale, Washington · 13162 days ago · 14 km deep · 43 km away
  11. 1.75 km E of Deming, Washington · 13158 days ago · 13 km deep · 71 km away

Before

  1. 2.13 km ESE of Deming, Washington · 13197 days ago · 1 km deep · 69 km away
  2. 1.54 km SSW of Kendall, Washington · 13203 days ago · 0 km deep · 70 km away
  3. 1.821 km NNE of Mission, Canada · 13205 days ago · 8 km deep · 90 km away
  4. 2.42 km SW of Ault Field, Washington · 13208 days ago · 21 km deep · 57 km away
  5. 1.517 km NNW of Jamestown, Washington · 13209 days ago · 18 km deep · 53 km away
  6. 1.82 km ENE of Deming, Washington · 13211 days ago · 1 km deep · 69 km away
  7. 1.82 km ENE of Deming, Washington · 13211 days ago · 1 km deep · 68 km away
  8. 3.53 km E of Deming, Washington · 13211 days ago · 1 km deep · 69 km away
  9. 1.516 km N of Jamestown, Washington · 13218 days ago · 47 km deep · 53 km away
  10. 2.13 km ESE of Deming, Washington · 13219 days ago · 1 km deep · 69 km away

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event uw10263968. Read Fri, Oct 2, 2026, 1:48 AM UTC.