Washington earthquakes

M2.0 earthquake 11 km WSW of Porter, Washington

A magnitude 2.0 earthquake struck 11 km WSW of Porter, Washington on Wed, Jun 22, 1977, 9:12 PM PDT (04:12 UTC), 0 km (0 mi) below the surface.

A larger quake followed: M2.7 17 km S of Mossyrock, 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
2.0 (md), micro
Local time
UTC
1977-06-23 04:12:17 UTC
Depth
-0.4 km (-0.2 mi), shallow
Epicenter
46.888° N, 123.435° 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 4.1 km horizontally, 6.7 km in depth
Depth from
From location
Station coverage gap
207°, poorly surrounded by stations
Stations used
5

Nearest places

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

Nearby

Within 100 km, magnitude 1.5 and up: 9 in the 60 days after this one and 7 in the 30 days before it.

After

  1. 1.910 km WSW of Porter, Washington · 17987 days ago · 0 km deep · 0 km away
  2. 2.25 km SSE of Seabeck, Washington · 17975 days ago · 12 km deep · 93 km away
  3. 2.717 km S of Mossyrock, Washington · 17975 days ago · 14 km deep · 93 km away
  4. 2.34 km SW of Orting, Washington · 17970 days ago · 0 km deep · 93 km away
  5. 1.92 km ESE of Belfair, Washington · 17970 days ago · -1 km deep · 79 km away
  6. 1.73 km WSW of Rosedale, Washington · 17968 days ago · 19 km deep · 74 km away
  7. 2.02 km W of Artondale, Washington · 17966 days ago · 20 km deep · 75 km away
  8. 1.65 km S of Gorst, Washington · 17956 days ago · 22 km deep · 85 km away
  9. 1.75 km NNW of Belfair, Washington · 17944 days ago · 22 km deep · 81 km away

Before

  1. 1.56 km WNW of Belfair, Washington · 17996 days ago · 18 km deep · 76 km away
  2. 1.510 km NW of Belfair, Washington · 17999 days ago · 24 km deep · 80 km away
  3. 2.81 km NNW of Wauna, Washington · 18000 days ago · 44 km deep · 82 km away
  4. 2.12 km S of Lakeland North, Washington · 18006 days ago · 8 km deep · 100 km away
  5. 2.69 km SSW of Morton, Washington · 18012 days ago · 0 km deep · 96 km away
  6. 2.15 km SW of Gorst, Washington · 18017 days ago · 20 km deep · 85 km away
  7. 3.06 km SSW of Morton, Washington · 18020 days ago · 24 km deep · 96 km away

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event uw10843943. Read Wed, Sep 30, 2026, 1:33 AM UTC.