United States Earthquakes, 1966

By Carl A. Von Hake and William K. Cloud, 1968, U.S. Department of Commerce, Environmental Science Services Division, Coast and Geodetic Survey, U.S. Government Printing Office, p. 61.
	WASHINGTON AND OREGON
(120th MERIDIAN OR PACIFIC STANDARD TIME)

February 6: No time given. The follow-
	ing report was received from an observer
	2 miles south of Cherry Grove, Oreg. "A
	distinct earth shock was felt by my wife
	and me. I talked to no one else in this area
	who felt it. That made me wonder about
	the possibility of a sonic boom; however, it
	was a sustained tremor for a few seconds
	which felt much like a light shock."
June 6: No time given. III. Seattle, Wash.
	"I was just walking into the Food Circus
	Building when the ground shook and huge
	light string swayed, etc."
June 11: 09:34:30.3*. Epicenter 47 degrees 50'
	north, 122 degrees 33' west, about 4 miles south-
	east of Port Gamble, Wash., S. Magnitude
	3.7. IV. Felt by many at Gorst. Seemed like
	a thud, deep in ground under the house.
	Frightened few at Port Gamble. Windows
	rattled at Silverdale; one rapid shake. Felt
	by many and frightened few at Tracyton;
	windows rattled; rapid, very brief shock.
	Intensity I-III at Bremerton, Indianola,
	Kingston, and Poulsbo.
June 24: 09:45. Tacoma, Wash. Press re-
	ported a slight earthquake was felt, at Ta-
	coma and in surrounding areas to the north
	and south. No damage was reported. Uni-
	versity of Washington seismologists re-
	ported the tremor was so slight it just
	barely registered on the seismograph.
July 30: 10:02:38*. Epicenter 47.1 degrees
	north, 122.1 degrees west, Washington, W. Mag-
	nitude 3.4. IV. Press reported a slight
	tremor shook residents in the Tacoma-
	Auburn-Sumner area. Felt by all at Gra-
	ham; felt like one far-away blast. One rapid
	blast effect was noted 6 miles southeast
	of Orting; windows rattled. "I thought a
	blast had gone off under my house. Re-
	sembled a stump charge. "Windows rattled
	at Sumner; split-second shock accompanied
	by loud earth noises. At Wilkeson, win-
	dows rattled, walls creaked, and faint earth
	noises were heard. Intensity I-III at Car-
	bonado, Kapowsin, McMillin, Milton,
	Orting, and Puyallup.
November 1: 03:22:53.6*. Epicenter
	47.6 degrees north, 122.3 degrees west, Washington,
	S. Magnitude 3.0. Felt by few in Seattle area.
December 23: 21:02:11.5*. Epicenter
	47.9 degrees north, 121.8 degrees west, Snohomish
	County, Wash., S. Magnitude 3.2. Felt by
	very few near Sultan.


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