Washington earthquakes

M2.7 earthquake 7 km SW of Morton, Washington

A magnitude 2.7 earthquake struck 7 km SW of Morton, Washington on Mon, Feb 26, 1973, 10:03 PM PST (06:03 UTC), 15 km (9 mi) below the surface.

A larger quake followed: M3.0 29 km S of Morton, Washington. This one was a foreshock.

Morton 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
2.7 (md), micro
Local time
UTC
1973-02-27 06:03:07 UTC
Depth
14.9 km (9.3 mi), shallow
Epicenter
46.517° N, 122.346° 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 0.5 km horizontally, 1.3 km in depth
Magnitude uncertainty
±0.14
Depth from
Operator assigned
Station coverage gap
143°
Stations used
8

Nearest places

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

Nearby

Within 100 km, magnitude 1.5 and up: 14 in the 60 days after this one and 5 in the 30 days before it.

After

  1. 2.531 km S of Mossyrock, Washington · 19565 days ago · 10 km deep · 30 km away
  2. 2.77 km SE of Mineral, Washington · 19559 days ago · 19 km deep · 25 km away
  3. 1.76 km SE of Mineral, Washington · 19555 days ago · 16 km deep · 24 km away
  4. 2.212 km NE of Ashford, Washington · 19551 days ago · 6 km deep · 49 km away
  5. 2.142 km NE of Amboy, Washington · 19549 days ago · 2 km deep · 44 km away
  6. 2.43 km NNE of Dash Point, Washington · 19539 days ago · 24 km deep · 93 km away
  7. 1.93 km ENE of McKenna, Washington · 19538 days ago · 31 km deep · 49 km away
  8. 1.76 km SE of Maplewood, Washington · 19532 days ago · 20 km deep · 94 km away
  9. 1.722 km ENE of Kalama, Washington · 19527 days ago · 32 km deep · 49 km away
  10. 3.029 km S of Morton, Washington · 19526 days ago · 16 km deep · 27 km away
  11. 2.110 km SE of Mineral, Washington · 19525 days ago · 26 km deep · 23 km away
  12. 2.414 km NNE of Ashford, Washington · 19519 days ago · 1 km deep · 50 km away
  13. 3.429 km S of Morton, Washington · 19514 days ago · 13 km deep · 26 km away
  14. 2.62 km SSE of DuPont, Washington · 19509 days ago · 26 km deep · 66 km away

Before

  1. 1.62 km NNW of Kapowsin, Washington · 19568 days ago · 67 km deep · 55 km away
  2. 3.87 km W of Home, Washington · 19570 days ago · 21 km deep · 92 km away
  3. 2.66 km SSE of Brady, Washington · 19580 days ago · 28 km deep · 98 km away
  4. 2.815 km SE of Ashford, Washington · 19584 days ago · 7 km deep · 41 km away
  5. 3.329 km NE of Yacolt, Washington · 19595 days ago · 2 km deep · 58 km away

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event uw10855898. Read Tue, Sep 22, 2026, 4:09 PM UTC.