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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 #127 - Summary, and parameter estimates with source IDs                                           
Mainshock; From the Washington Standard: "May 7. Yakima. Earthquake at Yakima.-- A correspondent, writing from Yakima, says that on the 6th ult., that vicinity was visited by an earthquake which was about as severe as the one in December, 1872. Some think it was harder. There were three shocks; the first was at half-past 3 o'clock, which lasted about eight or ten seconds, and made the houses tremble and creak sufficiently to frighten some persons quite badly and create an excitement among all the post. Five minutes later there was another light shock. The third shock, at fifteen minutes after 4 o'clock, was harder than the first, and lasted about twice as long."
Most catalogs date this event May 6, 1875; however based on the Washington Standard article of 5/7/1875 which describes the date as " 6th ult." I believe the correct date to be April 6, 1875.
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
1875  4  6  4  15    L  46.59  120.51        Yakima  WA           
N-WaS - 1531 WWC - 1650 - - N-WaS - 1531 -

Underlying Source Material
Source ID Publication Pub Date Pub Details
2359  Washington Public Power Supply System, Preliminary
Safety Analysis Report, Ammendment 23,
WPPSS Nuclear Project No. 1, 1300 MW Nuclear Power Plant, Vol. 2A. 		 1977  Table 2R E-9 
Transcription: 1875 May 6 Yakima, Wash.
 
Source ID Publication Pub Date Pub Details
29  Rasmussen, Norman, 1967, Washington state earthquakes 1840 through 1965, BSSA V. 57, No. 3, pp. 463-476  1967   
Transcription: 29 1875 May 7 00:15 Yakima 12 severe
 
Source ID Publication Pub Date Pub Details
1531  Washington Standard  1875  May 8, 1875, pg 2, c. 2. 
Transcription: May 7. Yakima. Earthquake at Yakima.-- A correspondent, writing from Yakima, says that on the 6th ult., that vicinity was visited by an earthquake which was about as severe as the one in December, 1872. Some think it was harder. There were three shocks; the first was at half-past 3 o'clock, which lasted about eight or ten seconds, and made the houses tremble and creak sufficiently to frighten some persons quite badly and create an excitement among all the post. Five minutes later there was another light shock. The third shock, at fifteen minutes after 4 o'clock, was harder than the first, and lasted about twice as long.
 
Source ID Publication Pub Date Pub Details
2419  Washington Public Power Supply System, "WPPSS Nuclear Project No. 2, Final Safety Analysis Report, Volume 1, Amendment 18"
September 1981 		 1981  Table 2.5-6 
Transcription: 1875 May 6 Yakima, Wash. Severe at 4:15 pm. R
 
Source ID Publication Pub Date Pub Details
1650  Woodward Clyde Consultants, unpublished  1981  Woodward-Clyde Consultants (1981), Historical Catalog (1841-1980) for the Pacific Northwest Region, unpublished catalog prepared for the Washington Public Power Supply System. Copy provided to UW in 1993. 
Transcription: 187505 70015000 46595-120513W R 01
 


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