The 1949 Olympia earthquake occurred on April 13 at 11:55:44 local time with a moment magnitude of 6.7 and a maximum Mercalli Intensity of VIII (Severe).

The shock was located in the area between Olympia and Tacoma, and was felt throughout the state, as well as parts of Oregon, British Columbia, Idaho, and Montana.

[6] A 23-ton cradle on the east tower of the Tacoma Narrows Bridge fell 500 feet (150 m), injuring two men.

[7] Severe damage were recorded at schools in Adna and Napavine, and structural losses to buildings in Centralia's downtown district.

[8][9] Eight people were killed, including young crossing guard Marvin Klegman who shielded a second-grader from falling bricks.