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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 #622 - Summary, and parameter estimates with source IDs                                           
Known only from a Penticton Herald article from 1927 transcribed in the WPPSS documents: "About a year ago, a similar shock was felt in Penticton but much more so at Naramata, at the time when tremors were experienced farther down the coast and among islands in the Pacific."
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
1926                        Naramata  B.C.           
N-WPP - 2488 - - - N-WPP - 2488 -

Underlying Source Material
Source ID Publication Pub Date Pub Details
2488  Washington Public Power Supply System, Preliminary
Safety Analysis Report, Ammendment 23,
WPPSS Nuclear Project No. 1, 1300 MW Nuclear Power Plant, Vol. 2A. 
1977  Tables 2R-E17 and 2R-E14C Penticton Herald, Penticton, B.C., September 29, 1927 
Transcription: September 26, 1927 "...In some homes chairs were rocked and
in others the tremor was barely felt,..."
Penticton Herald, Penticton, B.C., September 29, 1927

"QUAKE SHOCK FELT HERE EARLY MONDAY

"A slight but perceptible, earthquake shock was felt in Penticton
early on Monday shortly after 7 o'clock. Of brief duration, it was
probably more pronounced on the beaches than in the town. In some
homes, chairs were rocked and in others the tremor was barely felt, as
Mother Earth adjusted her strata covering in this neighborhood.

"About a year ago, a similar shock was felt in Penticton but much
more so at Naramata, at the time when tremors were experienced farther
down the coast and among islands in the Pacific. In the present instance,
there are no reports of earthquakes at other points.

"It is about 14 years since earthquake shocks have been felt here,
other than the 2 chronicled above."
_______________________________________________
Pentiction Herald, Penticton, B.C, September 29, 1927

"Naramata. A slight earth tremor was felt here on Monday morning a
little after 7 o'clock, but seemed to travel in a limited area, being
noticed only in certain locations."
 


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