Environment Canada said the weather system shattered more than 100 heat records across British Columbia, Alberta, Yukon and Northwest Territories.
Much of Siberia this year has had unseasonably high temperatures, leading to sizable wildfires.
Wildfires are still burning in Quebec's northern zone, with 11 fires still considered out of control early Tuesday morning. However, the provincial forest fire prevention agency, SOPFEU, said rain since Sunday and rising humidity have helped stabilize the flames for the time being.
The B.C. Wildfire Service says the cold front in northern B.C. is expected to generate strong winds, thunderstorms and the potential for dry lightning in the region plagued by drought.
The temperature in Verkhoyansk hit 38 degrees Celsius on Saturday, according to Pogoda i Klimat, a website that compiles Russian meteorological data.
Frigid north winds blow down from the Arctic Ocean, freeze saltwater and push sea ice south. The ice normally prevents waves from forming and locks onto beaches, walling off villages. But not this year.
The science director for Cook Inletkeeper, a nonprofit organization that monitors the health of Cook Inlet, wrote a paper two years ago on what salmon streams might be like in the future with climate change.
Robert Prescott, of the Wellfleet Bay Wildlife Sanctuary, believes a warming trend allowed the turtles to delay their migration south.
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