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. # `8 s: q' w: V - Z/ J F k" e1 F! zInitial reports estimated the quake was as large as magnitude 6.8, but those estimates were later downgraded to 6.4. # P' V% l; I" ? U+ M( C * T" y* p B m5 V: C7 H4 UPeople 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.