Title: 1946 Vancouver Island earthquake
Content:  The 1946 Vancouver Island earthquake struck Vancouver Island on the coast of British Columbia, Canada, on June 23 at 10:15 a.m. with a magnitude estimated at 7.0 and 7.5. The main shock epicenter occurred in the Forbidden Plateau area northwest of Courtenay. While most of the large earthquakes in the Vancouver area occur at tectonic plate boundaries, the 1946 Vancouver Island earthquake was a crustal event. Shaking was felt from Portland, Oregon, to Prince Rupert, British Columbia. This is one of the most damaging earthquakes in the history of British Columbia, but damage was restricted because there were no heavily populated areas near the epicentre, where severe shaking occurred. This earthquake is Canada's largest historic onshore earthquake. However, the greatest earthquake in Canadian history recorded by seismometers was the 1949 Queen Charlotte earthquake, an interplate earthquake that occurred on the ocean bottom just off the rugged coast of Graham Island, which reached magnitude 8.1 on the moment magnitude scale.
Title: Vancouver Island
Content:  Plate has fully subducted beneath it and the remnants of the Farallon Plate, the Juan de Fuca Plate, are now subducting below the island. This process has led to Vancouver Island being one of the most seismically active regions in Canada. The subduction zone off the coast of the island forms a section of the Ring of Fire. The area has been known to host megathrust earthquakes in the past, the last being the Cascadia earthquake of 1700. The Forbidden Plateau, in the east of the Vancouver Island Ranges, was the epicentre of the 1946 Vancouver Island earthquake that registered 7.3 on the moment magnitude scale, the strongest ever recorded on land in Canada. Vancouver Island was the location of the observation of the episodic tremor and slip (ETS) seismic phenomenon.
Title: Courtenay, British Columbia
Content:  On 14 June 1946, a 7.3 magnitude earthquake struck just west of Courtenay, with the epicentre located at Forbidden Plateau. The earthquake was felt as far north as Prince Rupert and as far south as Portland, Oregon. Many of the town's chimneys were destroyed, and there was significant damage to the post office and what is now Courtenay Elementary School. This was the largest earthquake to hit Vancouver Island, and the largest onshore earthquake in Canada on record. There were only two reported deaths: one Seattle man died of a heart attack and another drowned when his boat capsized due to a resulting wave.
Title: 1918 Vancouver Island earthquake
Content:  The 1918 Vancouver Island earthquake occurred in British Columbia, Canada at 12:41 a.m. Pacific Standard Time on December 6. The earthquake was most likely of the strike-slip type, and was estimated to have a maximum perceived intensity of VII (Very strong) on the Mercalli intensity scale. The epicenter was located east of the Stewardson inlet on the west coast of Vancouver Island, with damage occurring at the Estevan Point lighthouse on the Hesquiat Peninsula. The event registered 7.2 on the moment magnitude scale and was felt as far as northern Washington state and the interior of British Columbia. The earthquake took place in the vicinity of the Cascadia subduction zone where the Juan de Fuca Plate and the Explorer Plate are being subducted under the North American Plate at a rate of 4 cm and less than 2 cm per year respectively, but the event was a crustal intraplate earthquake and was produced from the complicated interaction between the plates in the area. The source of the earthquake was the Nootka transform fault, which separates the Juan de Fuca and Explorer plates and has been the origin of at least five additional moderate to large events since 1918.
Title: Geology of the Pacific Northwest
Content:  The Pacific Northwest is seismically active. The Juan de Fuca Plate is capable of producing megathrust earthquakes of moment magnitude 9: the last such earthquake was the 1700 Cascadia earthquake, which produced a tsunami in Japan, and may have temporarily blocked the Columbia River with the Bonneville Slide. More recently, in 2001, the Nisqually earthquake (magnitude 6.8) struck 10 mi northeast of Olympia, Washington, causing some structural damage and panic. In addition, eleven volcanoes in Canada have had seismic activity since 1975, including: the Silverthrone Caldera, Mount Meager massif, Wells Gray-Clearwater volcanic field, Mount Garibaldi, Mount Cayley massif, Castle Rock, The Volcano, Mount Edziza volcanic complex, Hoodoo Mountain, Crow Lagoon and Nazko Cone.
Title: Mount Cayley volcanic field
Content:  recent, the 1700 Cascadia earthquake, was recorded in the oral traditions of the First Nations people on Vancouver Island. It caused considerable tremors and a massive tsunami that traveled across the Pacific Ocean. The significant shaking associated with this earthquake demolished houses of the Cowichan Tribes on Vancouver Island and caused several landslides. Shaking due to this earthquake made it too difficult for the Cowichan people to stand, and the tremors were so lengthy that they were sickened. The tsunami created by the earthquake ultimately devastated a winter village at Pachena Bay, killing all the people that lived there. The 1700 Cascadia earthquake caused near-shore subsidence, submerging marshes and forests on the coast that were later buried under more recent debris.
Title: 1946 Vancouver Island earthquake
Content:  The tectonics that caused the 1946 Vancouver Island earthquake are poorly known. No surface expression of the offset was noticed, most likely because the epicenter area is very remote and densely forested. A comprehensive examination and computer interpretation of seismic data from over 50 stations have shown that a possible explanation of the earthquake includes a strike-slip fault corresponding to the lengthy axis of Vancouver Island, known as the Beaufort Range Fault. A fault running across Vancouver Island, corresponding to the projection of the underwater Nootka Fault on the British Columbia Coast, is also a possibility but an unlikely one because the earthquake showed no evidence of offsets along with a series of highways that follows much of the eastern coastline of Vancouver Island, called Island Highway, and other roads between Courtenay and Campbell River. The estimated depth of the earthquake places it within the continental crust, not at the margin with the Cascadia subduction zone, and certainly not inside the subduction zone itself. Specifically, the earthquake's epicenter was positioned somewhere in the Forbidden Plateau region, in central Vancouver Island.
Title: Forbidden Plateau
Content:  The plateau was the epicentre of the 1946 Vancouver Island earthquake that registered 7.3 on the Richter magnitude scale, the strongest ever recorded on land in Canada.
Title: Vancouver, Washington
Content:  nearby Vanport, Oregon. Other unusual storms include the Columbus Day windstorm of 1962 and an April 5, 1972, tornado which rated F3 on the Fujita scale, striking a local school. An EF1 tornado struck on January 10, 2008, just after noon, causing moderate damage along a 2 mi path from Vancouver Lake to the unincorporated Hazel Dell area. Because many Vancouver residents work in Portland, there is typically significant rush-hour traffic congestion on two bridges that cross the Columbia River – the Interstate Bridge and the Glenn Jackson Bridge. In 2017 there were 297,932 weekday vehicle crossings on the two bridges.
Title: Pachena Bay
Content:  On 26 January 1700, an earthquake, one of the largest earthquakes on record, ruptured the Cascadia subduction zone offshore from Vancouver Island to northern California, creating a tsunami that wiped out the village of Pachena Bay leaving no survivors. ""First Nations from Vancouver Island to Northern California describe the earthquake and tsunami in similar legends and artwork involving a life-and-death struggle between a thunderbird and a whale that caused the earth to shake violently and the seas to wash away their people and homes...[T]he ancient quake and tsunami devastated the western shores of Vancouver Island and the eastern coast of Japan." - Meissner 2015 An estimate of how 

Question: when was the last time vancouver had an earthquake?
Answer: 1946.