Both the focal mechanism and lack of sizable aftershocks are typical of Benioff Zone earthquakes. The July 3 UTC earthquake was felt throughout most of western Washington and northwest Oregon, and in parts of southwest British Columbia, Canada. The strongest shaking corresponded to a level of about VI on the Modified Mercalli Intensity scale. Structural damage included cracked chimneys and broken windows. The three-story Grays Harbor County Courthouse, built in 1910 and located in Montesano, suffered extensive structural damage to its cupola.
Interior walls wer e also cracked.
The Montesano fire station, built around 1979, also suffered structural damage. In Aberdeen, some structural cracks of walls and beams were reported. In addition, power outages and water main breaks occurred. The wood-framed roof of a furniture store collapsed. Data from eighteen other sites, operated by various groups, were not available until much later.