Cascadia Catalog 1793-1930

	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 #427 - Summary, and parameter estimates with source IDs
A puzzling account - From Townley and Allen: "1909 August 17. Dayton, Columbia Co. What is believed to have been an earthquake caused by volcanic disturbance in the Blue Mountains occurred here yesterday. One bullding, a machine shop, collapsed. Loss about 3500.-S. F. Chronicle, August 19. 1909. May not have been an earthquake. There are no volcanoes in the Blue Mountains." Newspaper accounts have not 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
1909	8	17										Dayton	WA
TAWA - 1126							-		-	-		TAWA - 1126				-

Source ID	Publication	Pub Date	Pub Details
749	Reid, unpub., Scrapbook and Cardfile, on microfilm at USGS in Menlo Park
Transcription: Dayton 17 Aug, 1909 (EQ ?) intensity -SB III pg 3

Source ID	Publication	Pub Date	Pub Details
2449	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: 1909 Aug 17 Dayton, Wash. Earthquake TA 1910 Feb 7 Portland Ore. R

Source ID	Publication	Pub Date	Pub Details
1126	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: 1909 August 17. Dayton, Columbia Co. What is believed to have been an earthquake caused by volcanic disturbance in the Blue Mountains occurred here yesterday. One bullding, a machine shop, collapsed. Loss about 3500.-S. F. Chronicle, August 19. 1909. May not have been an earthquake. There are no volcanoes in the Blue Mountains.