PORT TOWNSEND — A minor earthquake centered under the Strait of Juan de Fuca only three miles north of here was felt both on and off the North Olympic Peninsula on Wednesday night.

The magnitude 3.6 quake — upgraded from the initial 3.0 reported by the Pacific Northwest Seismic Network at the University of Washington shortly after the quake struck at 10:02 p.m. — was felt in Everett, Snohomish, Seattle and southern Vancouver Island, according to police and media reports Thursday.

No damage was reported.

A Port Townsend resident said the three-second jolt felt like a truck going down the street.

A Sequim man, a patient at Olympic Medical Center in Port Angeles, said he wasn’t sure at the time whether it was a quake or someone in his room in the older part of the hospital.

On Vancouver Island, the quake was felt in Sidney, Victoria, Langford, Esquimalt, Metchosin and Brentwood Bay, the Victoria Times-Colonist reported.

The seismology network said the quake’s epicenter was three miles north-northeast of Port Townsend, and it struck 34.7 miles below the bottom of the Strait.