A magnitude 6.4 earthquake has struck off the northwest coast of Vancouver Island, officials at the Pacific Geoscience Centre have confirmed, but there are no reports of damage or tsunami warnings. 4 x! z) u$ T3 p( p( y9 t 8 F- v) K" l3 a; Y! FInitial reports estimated the quake was as large as magnitude 6.8, but those estimates were later downgraded to 6.4. 5 m# ~! b5 S$ D9 h; A2 y / U- k* R! o) y Q5 sPeople report buildings swaying for several minutes from the Fraser Valley to Campbell River at around 12:41 PT p.m., but there are no reports of damage.