Washington earthquakes

M1.5 earthquake 14 km SW of Alder, Washington

A magnitude 1.5 earthquake struck 14 km SW of Alder, Washington on Fri, Nov 29, 1974, 3:04 PM PST (23:04 UTC), 26 km (16 mi) below the surface.

A larger quake followed: M2.6 19 km NE of Packwood, 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
1.5 (Md, duration), micro
Magnitude from
Pacific Northwest Seismic Network
Local time
UTC
1974-11-29 23:04:35 UTC
Depth
25.9 km (16.1 mi), shallow
Epicenter
46.714° N, 122.436° 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, 2.4 km in depth
Magnitude uncertainty
±0.12
Depth from
From location
Station coverage gap
81°
Stations used
10

Nearest places

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

Nearby

Within 100 km, magnitude 1.5 and up: 15 in the 60 days after this one and 19 in the 30 days before it.

After

  1. 1.63 km NNW of Bryn Mawr-Skyway, Washington · 18932 days ago · 30 km deep · 91 km away
  2. 1.92 km NE of Riverton, Washington · 18932 days ago · 25 km deep · 88 km away
  3. 1.721 km S of Morton, Washington · 18931 days ago · 8 km deep · 42 km away
  4. 1.62 km WNW of Bryn Mawr-Skyway, Washington · 18931 days ago · 27 km deep · 88 km away
  5. 1.512 km S of Pe Ell, Washington · 18928 days ago · -1 km deep · 70 km away
  6. 1.911 km ENE of Ashford, Washington · 18924 days ago · 3 km deep · 42 km away
  7. 1.51 km NNE of Riverton, Washington · 18904 days ago · 25 km deep · 88 km away
  8. 2.42 km W of Wauna, Washington · 18903 days ago · 33 km deep · 76 km away
  9. 2.619 km NE of Packwood, Washington · 18901 days ago · 0 km deep · 70 km away
  10. 2.419 km NE of Packwood, Washington · 18901 days ago · 9 km deep · 72 km away
  11. 1.93 km WSW of Wilderness Rim, Washington · 18899 days ago · 20 km deep · 93 km away
  12. 2.117 km NNE of Packwood, Washington · 18898 days ago · 13 km deep · 65 km away
  13. 2.01 km N of Riverton, Washington · 18895 days ago · 21 km deep · 88 km away
  14. 2.60 km N of Riverton, Washington · 18881 days ago · 24 km deep · 87 km away
  15. 2.13 km S of Issaquah, Washington · 18880 days ago · 15 km deep · 92 km away

Before

  1. 1.52 km NNW of Gorst, Washington · 18933 days ago · 17 km deep · 94 km away
  2. 1.819 km WSW of Packwood, Washington · 18935 days ago · 5 km deep · 45 km away
  3. 2.021 km NNE of Packwood, Washington · 18940 days ago · 3 km deep · 67 km away
  4. 2.120 km ENE of Ashford, Washington · 18944 days ago · 5 km deep · 50 km away
  5. 1.89 km ESE of Enumclaw, Washington · 18945 days ago · 8 km deep · 68 km away
  6. 2.213 km W of Packwood, Washington · 18948 days ago · 5 km deep · 48 km away
  7. 1.67 km WSW of Mineral, Washington · 18949 days ago · 25 km deep · 13 km away
  8. 2.03 km W of Belfair, Washington · 18949 days ago · -1 km deep · 88 km away
  9. 2.010 km SE of Ashford, Washington · 18950 days ago · 30 km deep · 39 km away
  10. 2.33 km SSE of Issaquah, Washington · 18951 days ago · 21 km deep · 93 km away
  11. 2.85 km SE of Bucoda, Washington · 18954 days ago · 3 km deep · 30 km away
  12. 1.930 km SSE of Mossyrock, Washington · 18955 days ago · 36 km deep · 49 km away
  13. 2.31 km W of Hobart, Washington · 18957 days ago · 19 km deep · 85 km away
  14. 2.214 km N of Onalaska, Washington · 18957 days ago · -1 km deep · 20 km away
  15. 1.67 km ESE of Enumclaw, Washington · 18958 days ago · 1 km deep · 67 km away
  16. 2.218 km SSE of Carbonado, Washington · 18958 days ago · 3 km deep · 43 km away
  17. 2.21 km WNW of Beaux Arts Village, Washington · 18959 days ago · 14 km deep · 99 km away
  18. 1.97 km WNW of Ryderwood, Washington · 18962 days ago · 18 km deep · 64 km away
  19. 1.96 km SSE of Carbonado, Washington · 18962 days ago · -1 km deep · 47 km away

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event uw10859993. Read Thu, Oct 1, 2026, 9:08 AM UTC.