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Cascadia Historic Earthquake Catalog, 1793-1929
Covering Washington, Oregon and Southern British Columbia
Provided by: The Pacific Northwest Seismic Network
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Individual Event Report
Event #470 - Summary, and parameter estimates with source IDs                                           
The MWR weather observer in LaGrande Oregon described this as being RF Intensity V in Summerville, Oregon. Townley and Allen describe the shock as "medium" and cite the S.F. Chronicle of 1/19/1915. The BSSA, (V. 5, p. 54) describes it as light: "January 18, 1915. - A light earthquake was felt at Summervillle, Oregon. The shock is said to have been felt over an area of forty square miles." Berg and Baker cite the Oregonian of January 19, 1915. Researching newspaper articles might be helpful, as none are yet included in the data base.
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
1915  1  18        G  45.45  118.08        Summerville  OR  V  RF  40.00    mi2 
RAS - 123 MWR - 2210 - - MWR - 2210 BSSA - 2173

Underlying Source Material
Source ID Publication Pub Date Pub Details
385  Byerly, Perry, 1952, Pacific Coast Earthquakes, Condon Lecture, pp. 33-38  1952  U.W. Library, N979 B991p, Special Collections) 
Transcription: 1915, January 18 Summerville, Union County. Felt in surrounding district.
 
Source ID Publication Pub Date Pub Details
2173  Bulletin of the Seismological Society of America  1915  V. 5, p. 54 
Transcription: Summerville, Oregon, January 18, 1915. - A light earthquake was felt at Summervillle, Oregon. The shock is said to have been felt over an area of forty square miles.
 
Source ID Publication Pub Date Pub Details
1791  Woodward Clyde Consultants, unpublished  1981  Woodward-Clyde Consultants (1981), Historical Catalog (1841-1980) for the Pacific Northwest Region, unpublished catalog prepared for the Washington Public Power Supply System.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: 19150119 45467-118000W BB 01
 
Source ID Publication Pub Date Pub Details
529  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: 1915 January 18. Summerville, Union Co. Medium; felt in surrounding district.-BSSA, 5, 54; S.F. Chronicle, January 19, 1915.
 
Source ID Publication Pub Date Pub Details
1350  Berg and Baker, 1963, Oregon Earthquakes, 1841 through 1958, BSSA, V. 53, No. 1, pp. 95-108  1963   
Transcription: 1915 - - Jan 19 - Summerville - 10 Probably this is the preceeding shock (10). Also no evidence was found in the Oregonian Newspaper of a shock on Jan 19.
 
Source ID Publication Pub Date Pub Details
530  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: 1915 January 19. Summerville. Felt at La Grande, fifteen miles southwest.-MWR, 43, 40. Probably the preceding shock. Reid has only one card, and that for January 18.
 
Source ID Publication Pub Date Pub Details
621  Reid, unpub., Scrapbook and Cardfile, on microfilm at USGS in Menlo Park     
Transcription: Summerville 45 degrees 27' N; 118 degrees 05' W 18 Jan, 1915 intensity-light -Bull SSA vol 54; MWR Jan 1915, pg 40 Said to have been felt over an area of 40 sq miles.
 
Source ID Publication Pub Date Pub Details
123  Rasmussen, Norman, 1967, Washington state earthquakes 1840 through 1965, BSSA V. 57, No. 3, pp. 463-476  1967   
Transcription: 123 1915 Jan. 18 - Sumnerville, Ore. III 3
 
Source ID Publication Pub Date Pub Details
1790  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: 191501180000000 45500-118000R2III R 3 01
 
Source ID Publication Pub Date Pub Details
2210  Monthly Weather Review  1915  V. 43, p. 40 
Transcription: January 19, 1915 - Summerville, Oregon: RF intensity V
45 degrees 27 minutes
118 degrees 05 minutes

Reported by Observer Press, LaGrande, Oregon.
 
Source ID Publication Pub Date Pub Details
1349  Berg and Baker, 1963, Oregon Earthquakes, 1841 through 1958, BSSA, V. 53, No. 1, pp. 95-108  1963   
Transcription: 1915 - - Jan 18 - Summerville III 10;O/Jan 19, 1915, 5:3 Occurred late at night (PST) Jan 17. (O/Jan 19, 1915, 5:3)
 


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