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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 #671 - Summary, and parameter estimates with source IDs                                           
Listed only in Milne: "The epicentre of this tremor was between 1 degree and 2 degrees south of the area of maximum damage, in a region that was not heavily populated. The earthquake was felt as far north as Ketchikan, Alaska, and Anyox, B.C. and to the east as far as Terrace, Skeena and Lakelse. Prince Rupert does not appear to have been in the area of maximum damage, but at Haysport, a short distance southeast of Prince Rupert, goods were knocked off shelves. Centres on the Queen Charlotte Islands suffered greatly. At Massett, water was splashed out of tanks, trees were reported to have swayed, and houses shook violently. The Prince Rupert paper stated that people were thrown to the ground. At Queen Charlotte City dishes were broken, clocks were stopped, and a foot tidal wave was reported. Nearby at Skidgate there was a tidal wave,and there were fissures on the beach. At Sandspit 500 feet of the beach was reported to have disappeared into the sea. Further south at Lockeport the crest of a hill was dislodged, and close by at Rose Harbour chimneys were toppled. From these reports it would appear that the major damage was along the east shore of the Queen Charlotte Islands, but this is probably because that was the only settled portion of the region. Certainly the epicentre must have been quite close to Queen Charlotte city and Skidegate, probably just west of Graham Island. Such origin is indicated on the map."
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
1929  26  42  51.00  131.00    7.00  Queen Charlotte City  B.C.  VII  MM       
MILNE - 1515 MILNE - 1515 - MILNE - 1515 MILNE - 1515 -

Underlying Source Material
Source ID Publication Pub Date Pub Details
1515  Milne, W.G., 1956, Seismic Activity in Canada, west of the 113th meridian 1841-1951: Canada Dominion Obs. Pub., V. 18, No. 7, pp. 119-146  1957   
Transcription: 1929 MAY 26. 2:42 p.m. VI-VII. phi = 51 degrees N; lambda = 131 degrees W; M = 7. G. The epicentre of this tremor was between 1 degree and 2 degrees south of the area of maximum damage, in a region that was not heavily populated. The earthquake was felt as far north as Ketchikan, Alaska, and Anyox, B.C. and to the east as far as Terrace, Skeena and Lakelse. Prince Rupert does not appear to have been in the area of maximum damage, but at Haysport, a short distance southeast of Prince Rupert, goods were knocked off shelves. Centres on the Queen Charlotte Islands suffered greatly. At Massett, water was splashed out of tanks, trees were reported to have swayed, and houses shook violently. The Prince Rupert paper stated that people were thrown to the ground. At Queen Charlotte City dishes were broken, clocks were stopped, and a foot tidal wave was reported. Nearby at Skidgate there was a tidal wave,and there were fissures on the beach. At Sandspit 500 feet of the beach was reported to have disappeared into the sea. Further south at Lockeport the crest of a hill was dislodged, and close by at Rose Harbour chimneys were toppled. From these reports it would appear that the major damage was along the east shore of the Queen Charlotte Islands, but this is probably because that was the only settled portion of the region. Certainly the epicentre must have been quite close to Queen Charlotte city and Skidegate, probably just west of Graham Island. Such origin is indicated on the map.
 


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