Washington earthquakes

M1.7 earthquake 7 km NE of Concrete, Washington

A magnitude 1.7 earthquake struck 7 km NE of Concrete, Washington on Mon, Aug 23, 1982, 4:42 AM PDT (11:42 UTC), -1 km (-1 mi) below the surface.

A larger quake followed: M2.2 25 km E of Darrington, Washington. This one was a foreshock.

Concrete 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
1.7 (md), micro
Local time
UTC
1982-08-23 11:42:33 UTC
Depth
-0.8 km (-0.5 mi), shallow
Epicenter
48.592° N, 121.680° 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 1.0 km horizontally, 1.6 km in depth
Magnitude uncertainty
±0.07
Depth from
Operator assigned
Station coverage gap
221°, poorly surrounded by stations
Stations used
6

Nearest places

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

Nearby

Within 100 km, magnitude 1.5 and up: 10 in the 60 days after this one and 8 in the 30 days before it.

After

  1. 1.738 km NNW of Leavenworth, Washington · 16095 days ago · 10 km deep · 96 km away
  2. 2.225 km E of Darrington, Washington · 16095 days ago · 2 km deep · 47 km away
  3. 1.91 km WNW of Orcas, Washington · 16094 days ago · 12 km deep · 95 km away
  4. 2.05 km N of Friday Harbor, Washington · 16094 days ago · 6 km deep · 98 km away
  5. 1.74 km E of Granite Falls, Washington · 16092 days ago · -1 km deep · 58 km away
  6. 1.79 km ESE of Orcas, Washington · 16085 days ago · 54 km deep · 84 km away
  7. 2.18 km SE of Camano, Washington · 16083 days ago · 26 km deep · 78 km away
  8. 1.54 km NNE of Cathan, Washington · 16076 days ago · 18 km deep · 65 km away
  9. 2.63 km SW of Darrington, Washington · 16047 days ago · 1 km deep · 40 km away
  10. 2.04 km N of Woods Creek, Washington · 16045 days ago · 15 km deep · 77 km away

Before

  1. 1.513 km S of Chilliwack, Canada · 16112 days ago · 3 km deep · 55 km away
  2. 2.86 km WSW of Coupeville, Washington · 16116 days ago · 17 km deep · 91 km away
  3. 2.86 km NNE of Acme, Washington · 16119 days ago · 13 km deep · 40 km away
  4. 1.72 km E of Maltby, Washington · 16121 days ago · 22 km deep · 93 km away
  5. 2.010 km SSW of Chilliwack, Canada · 16121 days ago · 2 km deep · 59 km away
  6. 1.543 km WNW of Granite Falls, Washington · 16124 days ago · -1 km deep · 91 km away
  7. 2.41 km NE of Bothell West, Washington · 16128 days ago · 22 km deep · 96 km away
  8. 1.91 km WNW of Rockport, Washington · 16131 days ago · 0 km deep · 12 km away

Earthquakes todayWashington earthquakesLive radar here

Sources

From the USGS Earthquake Hazards Program and its partner networks, event uw10144698. Read Tue, Sep 22, 2026, 11:21 PM UTC.