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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 #519 - Summary, and parameter estimates with source IDs                                           
The underlying source is the Walla Walla weather observer. Townley and Allen's is the only catalog to include this, and they say: "Two shocks; abrupt bumping, north to south. Possibly the same shock as was felt in Yakima Valley on February 28, one of the dates being in error"
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
1918  46.03  188.33        Walla Walla  WA  III  RF       
TAWA - 1156 REID1 - 779 - - TAWA - 1156 -

Underlying Source Material
Source ID Publication Pub Date Pub Details
1156  Townley, S. D. and M. W. Allen, 1939, Descriptive Catalog of Earthquakes of the Pacific Coast of the United States 1769-1928, Chap. III Earthquakes in Washington, 1883-1928, BSSA, V. 29, No. 1, pp. 259-268  1939   
Transcription: 1918 March 1. 4:08 p.m. III. Walla Walla. Two shocks; abrupt bumping, north to south. Possibly the same shock as was felt in Yakima Valley on February 28, one of the dates being in error.-MWR, 46, 147.
 
Source ID Publication Pub Date Pub Details
779  Reid, unpub., Scrapbook and Cardfile, on microfilm at USGS in Menlo Park     
Transcription: Walla Walla 46 degrees 02' N; 188 degrees 20' W PST 4:08 pm 1 Mar, 1918 GMT 0h 8m 2 Mar, 1918 III 2 shocks duration 1 second -MWR 147 Abrupt bumping N-S. Nothing more.
 
Source ID Publication Pub Date Pub Details
2253  Monthly Weather Review  1918  V. 46, p. 147 
Transcription: Date: March 2, 1918
Time (Greenwich Civil): 00:08
Location: Walla Walla, Wash.
Latitude (deg., min.): 46 02
Longitude (deg.,min.): 118 20
RF Intensity: 3
Number of Shocks: 2
Duration (sec.): 1
Sounds: No
Remarks: A abrupt bumping N-S
Observer: C.G. Garrett
 


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