Residents of the town of Aguamansa clean the surroundings of their houses due to the proximity of the fire, as wildfires rage out of control on the island of Tenerife, Canary Islands. Reuters

The devastating fires in British Columbia and the Northwest Territories are just the latest in a summer of dramatic wildfires across the country that have left millions of acres scorched.

According to estimates, 19,000 people were evacuated from Yellowknife, the Northwest Territories' capital, over 48 hours, its environment minister Shane Thompson said. The city, home to some 20,000, was largely a ghost town following the largest ever evacuation from the region.

Meanwhile, an estimated 26,000 people may have been forced to flee a vast wildfire raging out of control in the Spanish holiday island of Tenerife, the emergency services said Saturday.

"Provisional estimates suggest that more than 26,000 people may have been evacuated," the emergency services wrote on X, formerly known as Twitter, citing census data.

In an update late on Friday, the authorities said some 4,500 people had been evacuated since the fire began on Tuesday night. But the flames spread following a difficult night of "severe weather" characterised by strong winds and higher than expected temperatures, forcing a wave of evacuations from five municipalities in the northern part of the island.

More than 2,000 kilometres south in British Columbia, fire also bore down on Kelowna, a city of 150,000 people in the Okanagan Valley.

Blazes have already destroyed several properties in West Kelowna, separated by Okanagan Lake from its larger, eponymous neighbour.

Among them is the Lake Okanagan Resort, according to local media, which is known for having hosted high-profile politicians such as British prime minister Margaret Thatcher.

Overall, the number of people under evacuation order in British Columbia was 15,000, Emergency Management Minister Bowinn Ma said, according to Canadian media.

Thousands in the area were ordered evacuated or told late on Thursday to be ready to leave at a moment's notice, while those on the University of British Columbia's Okanagan campus were ordered Friday to leave "immediately."

Officials described firefighters in the Kelowna area as being forced to pull back, with some becoming trapped behind lines while making "heroic efforts" to rescue area residents. "We fought hard last night to protect our community," local fire chief Jason Brolund told a briefing on Friday.

The blazes have caused "terrible loss," Prime Minister Justin Trudeau told reporters after meeting evacuees from Yellowknife as they arrived in Edmonton, Alberta, with no idea when they may return home.

Agence France-Presse