United States Earthquakes, 1950

By Leonard M. Murphy and Franklin P. Ulrich, 1952, U.S. Department of Commerce, Coast and Geodetic Survey, Serial Number 755, U.S. Government Printing Office, pp. 16-17.
WASHINGTON AND OREGON
(120th MERIDIAN OR PACIFIC STANDARD TIME)

March 7: 22:25. Entiat, Wash. IV. Sharp, blast-like shock felt by two persons.
April 14: 03:03:48*. Epicenter 48 degrees north, 122 1/2 degrees west, about 8 miles southwest of Langley,
	Wash., W. Felt over an area of about 7,000 square miles in northwestern Washington from Belling-
	ham southeast to Rockport, southwest to North Bend and Eatonville, northwest to Quilcene and
	Port Angeles, Eastsound, and Bellingham. See map. Press reported the shock was also felt in
	Vancouver, British Columbia. Maximum intensity in the United States was VI.
 1950 Isoseismal Map
  INTENSITY VI:
  Coupeville.-Felt by, awakened, and frightened all in home. Sounded like distant, heavy
	explosion. Everything shook.
  Langley.-Awakened many in community. Slight roaring sound. Plaster cracked and fell,
	hanging objects swung, small objects shifted and overturned. Trees and bushes shaken strongly.
  Port Townsend.-Felt by, awakened, and frightened all. A few plaster cracks. Pendulum
	clocks stopped, windows and doors rattled.
  INTENSITY V: Bellingham, Concrete, Darrington, Eastsound, Everett, Monroe, North Bend
	Ranger Station, Port Angeles, Port Gamble, Possession, Sedro-Woolley, and Tacoma.
  INTENSITY IV: Ariel, Buckley, Carbonado, Cle Elum, Eatonville, near Landsburg, Puyallup,
	Quilcene (2 miles south of), Rockport, and Seattle.
  INTENSITY III: Tillicum.
  Negative reports were received from 5 places adjacent to the felt area and from 7 other places.
May 16: 23:36. Whatcom and Skagit Counties, Wash. III. Slight shock felt by several.
	No particular locality given.
June 25: 15:45. Cheney, Wash. IV. "A small earthquake was felt in Cheney. . . .   The
	shock was said to have been quite sharp and followed by noticeable swaying."-(BSSA, October, 1950.)
December 2: Mukilteo, Wash. V. "Residents of this Puget Sound town felt sharp earth
	tremors from 5:57 to 6:05 p. m., P. S. T. Stovepipes were shaken loose and dishes were broken."-
	(BSSA, January, 1951.)


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