Washington earthquakes

M1.8 earthquake 3 km NNE of Echo Lake, Washington

A magnitude 1.8 earthquake struck 3 km NNE of Echo Lake, Washington on Wed, Feb 27, 1974, 2:07 AM PDT (09:07 UTC), 21 km (13 mi) below the surface.

A larger quake followed: M2.4 2 km SW of Medina, Washington. This one was a foreshock.

Echo Lake 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
1.8 (md), micro
Local time
UTC
1974-02-27 09:07:54 UTC
Depth
21.2 km (13.2 mi), shallow
Epicenter
47.819° N, 122.031° 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 2.2 km horizontally, 4.8 km in depth
Magnitude uncertainty
±0.14
Depth from
From location
Station coverage gap
155°
Stations used
7

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 7 in the 30 days before it.

After

  1. 1.8Puget Sound region, Washington · 19193 days ago · 17 km deep · 38 km away
  2. 1.52 km ENE of Bonney Lake, Washington · 19186 days ago · 17 km deep · 71 km away
  3. 2.42 km SW of Medina, Washington · 19185 days ago · 5 km deep · 29 km away
  4. 2.01 km WSW of Mercer Island, Washington · 19161 days ago · 0 km deep · 32 km away
  5. 2.30 km NE of Seattle, Washington · 19158 days ago · -1 km deep · 32 km away
  6. 1.51 km N of Seattle, Washington · 19157 days ago · -1 km deep · 31 km away
  7. 2.13 km SW of Three Lakes, Washington · 19148 days ago · 9 km deep · 12 km away
  8. 1.50 km WNW of Maple Valley, Washington · 19148 days ago · 2 km deep · 47 km away
  9. 1.65 km WSW of Wilderness Rim, Washington · 19148 days ago · 16 km deep · 45 km away
  10. 1.60 km ENE of Edmonds, Washington · 19147 days ago · 8 km deep · 25 km away
  11. 1.60 km E of White Center, Washington · 19143 days ago · 23 km deep · 41 km away
  12. 1.60 km WNW of Bangor Trident Base, Washington · 19141 days ago · 17 km deep · 53 km away

Before

  1. 1.7Puget Sound region, Washington · 19203 days ago · 19 km deep · 78 km away
  2. 1.82 km WSW of Eastmont, Washington · 19204 days ago · 8 km deep · 16 km away
  3. 1.73 km WNW of Rockport, Washington · 19210 days ago · -1 km deep · 81 km away
  4. 1.83 km S of Mercer Island, Washington · 19217 days ago · 11 km deep · 35 km away
  5. 2.13 km N of Bryn Mawr-Skyway, Washington · 19217 days ago · 6 km deep · 36 km away
  6. 1.84 km SSE of Seattle, Washington · 19224 days ago · 8 km deep · 34 km away
  7. 1.72 km E of Seattle, Washington · 19224 days ago · 4 km deep · 31 km away

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event uw10858328. Read Tue, Sep 22, 2026, 8:42 PM UTC.