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Cascadia Historic Earthquake Catalog, 1793-1929
Covering Washington, Oregon and Southern British Columbia

Provided by: The Pacific Northwest Seismic Network
About the Cascadia Historic Earthquake Catalog       One-line catalog format

1793-1849 .... 1850s .... 1860s .... 1870s .... 1880s .... 1890s .... 1900s .... 1910s .... 1920s .... 1930s (not complete) .... Other Cascadia Catalogs

  
Individual Event Report
Event #649 - Summary, and parameter estimates with source IDs                                           
From Townley and Allen: "Humboldt Bay, California. This severe shock was felt from Fort Seward to the Oregon border; so probably was felt in the southwest corner of Oregon. It was felt in Cresent City, but not in Gold Beach..." No newspapers have been researched.
TIME LOCATION MAGNITUDE MAX. INTENSITY FELT AREA
YR MO DAY HR MIN AM/PM Time
Type
LAT(N) LON(W) DEP
(km)
MAG Mag
Type
Felt
Plc.
Felt
St.
Inten-
sity
Int.
Type
Felt
Area
Felt
Area
Int.
Felt
Area
Units
1927  20  12            Humboldt Bay  CA           
TA-OR - 558 - - - TA-OR - 558 -

Underlying Source Material
Source ID Publication Pub Date Pub Details
558  Townley, S.D. and M.W. Allen, 1939, Descriptive Catalog of earthquakes of the Pacific Coast of the United States 1769 to 1928, Chapter II, Earthquakes in Oregon--1846-1928, BSSA, V. 29, No. 1, pp. 253-258.  1939   
Transcription: 1927 August 20. 12:05 p.m. Humboldt Bay, California. This severe shock was felt from Fort Seward to the Oregon border; so probably was felt in the southwest corner of Oregon. It was felt in Cresent City, but not in Gold Beach. More complete account in the California list.
 
Source ID Publication Pub Date Pub Details
412  Byerly, Perry, 1952, Pacific Coast Earthquakes, Condon Lecture, pp. 33-38  1952  U.W. Library, N979 B991p, Special Collections) 
Transcription: 1927, August 20 Humboldt Bay, California. Probably felt in southern Oregon.
 


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