WASHINGTON AND OREGON (120th MERIDIAN OR PACIFIC STANDARD TIME) January 5: 16:00. Longmire, Wash. IV. Felt by many in home and community. Walls creaked. Slow motion. "Many thought the earthquake was snow sliding from roofs." April 12: 14:37:11*. Epicenter 48 degrees north, 120 degrees west, north-central Washington, about 8 miles south- west of Pateros, W. Felt over an area of approximately 8,000 square miles. (See map, page 27.) Maxi- mum intensity (damage), VI. Damage slight: few reports of plaster cracking; few windows, and dishes broken. Rocks fell on roads near Chelan.
INTENSITY (DAMAGE) VI:
Ardenvoir.-Felt by all. Cans fell. Rapid motion, lasting about 6 seconds.
Chelan and Pateros areas.-Felt by all. Windows and dishes broken in some homes; lights swayed in wide
arc. State Highway Patrol reported rocks fell on U.S. Highway No. 97 and a considerable amount fell along
one section south of a tunnel which spans the road near Chelan. Rapid motion from east, lasting 15 seconds;
moderate earth noises from east heard 3 seconds before shock; at Pateros, noise sounded like furniture being
pushed across bare boards.
Chelan Falls.-Felt by all; frightened many; awakened observer. Rapid motion, lasting several seconds;
loud earth noises heard by many. One observer reported it seemed as if the whole house was going to fold up.
Entiat.-Felt by all. Small objects shifted. Trees, bushes shaken moderately. Rapid motion, lasting 10
seconds; moderate earth noises heard by few.
Methow.-Felt by many. Plaster cracked. Entire building rattled. Rapid, motion from north-south,
lasting 30 seconds; loud earth noises heard by many.
Orondo.-Felt by all; frightened few. Plaster cracked. Small objects shifted. Two distinct shocks; rapid
motion from east, lasting 30 seconds; loud earth noises heard by many 2 seconds before shock.
Winthrop.-Felt by many; frightened few. Damage slight. Dishes broken. Small objects and furnishings
shifted; bases and small objects overturned; knickknacks fell. Some said rapid motion; others, slow; duration
from few seconds to 30 seconds; faint to moderate earth noises from east 2-3 seconds before shock.
INTENSITY (DAMAGE) V: Carlton, Manson, Stevens Pass (Merritt Cafe on Highway 2).
INTENSITY (DAMAGE) IV: Almira, Azwell, Brewster, Bridgeport, Cashmere, Creston, Conconully,
Coulee Dam, Douglas, Electric City, Farmer, Govan, Grand Coulee, Hartline, Keller, Leavenworth, Malott,
Monse, Nespelem, Omak (1 mile northeast of), Synarop, Tonasket, Twisp, Waterville, Wenatchee, and
Withrow.
INTENSITY (DAMAGE) I TO III: Disautel, Dryden, East Wenatchee, Mansfield, Marblemount, Monitor,
Oroville, Palisades (1 1/2 miles from, in Moses Coulee), and South Wenatchee.
April 12: 17:00 or 18:00 (about). Electric City. Some reported a shock was felt with about the
same effects as the shock at 14:37:11*.
May 22: 12:13. Skagit River area, Wash. IV. Reported as strongest at Diablo Dam and New-
halem. Houses creaked; tools swayed against boards. Felt at Ross Dam Powerhouse. Also felt at
Victoria, B. C., where seismographic station reported the epicenter of this shock was in Canada.
July 12: 17:42. Western Washington. Felt over an area of approximately 300 square miles of the
Puget Sound region. IV. At Battle Point on Bainbridge Island, felt like a heavy object hit house; whole
house shook; frame creaked. Rapid motion from east, lasting 1 second. Felt by all in home at Bremerton,
where windows, doors, and dishes rattled; vases and small objects shook east-west; rapid motion, lasting
10-15 seconds; loud roaring earth noises from east heard 2-3 seconds before shock. Also felt by several at
Post Office. Felt by all one mile east of Port Orchard; frame creaked. Distant rumbling noise, 2-3 seconds
before shock, increasing in volume, until a sudden lurch was felt in the house; ended with sensation of house
being picked up and dropped; rapid motion, lasting about 3 seconds. At Retsil, felt by all. At Veterans
Home (Retsil), three very sudden and strong shocks from northwest-southwest, with light upward lift.
Also felt at Annapolis, Hansville, Kingston, Kitsap Lake (west of Bremerton), and Tracyton.
August 22: 21:00 (about). Eastsound, Wash. (Orcas Island). V. Felt by several (some outdoors;
active). Small objects and furnishings shifted; windows, doors, and dishes rattled; house creaked. Brief
duration; moderate earth noises heard 5 seconds before shock.
September 21: 23:35. Ashford, Wash. IV. Felt by and awakened several in community. Doors
rattled. Rapid motion.
October 6: 21:07:52*. Epicenter 46 degrees 43' north, 124 degrees 02' west, north end of Willapa Bay, Washington,
S. Felt over a land area of approximately 1,800 square miles of Grays Harbor and Pacific Counties in
western Washington. Maximum intensity (damage) VI at Tokeland, where patio around motel was
cracked in several places.
INTENSITY (DAMAGE) VI:
Tokeland (north end of Willapa Bay).-Felt by all; awakened many and frightened few in community.
Patio around motel cracked in several places. Rapid motion from west-east, lasting several seconds; moderate
earth noises heard by several.
INTENSITY (DAMAGE) V: Aberdeen, Bay Center, Grayland, Menlo, Nahcotta, North Cove, and South
Bend.
INTENSITY (DAMAGE) IV: Hoquiam, Ocean Park, Oysterville, Porter, Raymond, and Westport.
INTENSITY (DAMAGE) I TO III: Cosmopolis, Frances, Ocean City, and Satsop (1 mile northeast of).
November 18: 14:15. Gresham, Oreg. Shock reported felt only at Gresham.
UW Dept. of Earth and Space Sciences ..... . PNW EARTHQUAKES