VICTORIA, British Columbia, — Each day, more deaths are being linked to the heat wave that struck the Pacific Northwest this past week, with medical staff who treated people overwhelmed by temperatures well above 38 Celsius saying the toll from the extreme weather will keep creeping up. Hundreds of deaths were being investigated as heat related in Oregon, Washington state and British Columbia. The dangerous heat began June 25 and only began to subside in some areas on Tuesday. The death toll in Oregon alone has reached at least 79, the state medical examiner said, with most occurring in Multnomah County, which encompasses Portland. The deaths include an Guatemalan immigrant who collapsed as he worked at a plant nursery in a rural Oregon town during the soaring heat. In Canada, British Columbia’s chief coroner, Lisa Lapointe, said her office received reports of at least 486 “sudden and unexpected deaths” between June 25 and Wednesday. Normally, she said about 165 people would die in the province over a five-day period. She said it was too soon to confirm how many deaths were heat related but that it was likely behind most of them. Washington state authorities have linked about 30 deaths to the heat, with more reports coming in each day this week. “I think, over time, we will understand that the numbers are only going to climb," said Dr. Steve Mitchell, director of Harborview Medical Centre"s Emergency Medicine Department in Seattle. "I know, in my experience, that I’m expecting to see much larger numbers than what we are currently able to report because of talking to EMS colleagues who were experiencing twice as many calls for help that day.” There were 1,792 emergency room visits for suspected heat-related illness since June 25, the Washington state Department of Health said Thursday. Of those visits, 21% required people to be admitted to the hospital. Monday had the most emergency room visits, with 702, the health department said. It was the hottest day of the heat wave in many areas, with Seattle, Portland, Oregon, and other cities smashing all-time heat records. It reached 42 Celsius in Seattle, and 47 Celsius in Oregon"s largest city. “With this latest heat emergency, when we were dealing with it, the only thing comparable at Harborview and in the region that we’ve experienced recently was actually the early days of COVID," Mitchell said. Forecasters blamed the temperatures that spiked more than 30 degrees Celsius above normal on a “heat dome” that parked a strong high pressure system over the region. Temperatures cooled considerably in western Washington and Oregon by Tuesday, though a heat warning was still in effect for parts of the interior Northwest and Canada. Experts say the hot weather is a harbinger of things to come as climate change affects global weather patterns. The extraordinary heat wave stretched into the upper reaches of California, where several wildfires erupted in the hot, dry conditions, making it difficult for firefighters trying to beat back the flames that have driven thousands from their homes in mountain communities and burned several residences. Meanwhile, a forest fire that began after three days of record-breaking temperatures has destroyed most of the small western Canadian town of Lytton, as government officials issued fresh evacuation orders on Thursday as more wildfires tore through the province. More than 1,000 people in and around Lytton, in central British Columbia, were evacuated late on Wednesday after the fast-moving fire engulfed the community, catching residents by surprise. The cause of the fire was being investigated, B.C Premier John Horgan told reporters. — Euronews