Heat wave to spread from B.C.

Ontario on fringe’ of system centred in northern California and expanding north and east

Sweltering temperatures stretching from British Columbia to the Ontario border has prompted hundreds of heat warnings, but it's not as intense as the deadly 2021 heat dome in B.C., says a national warning preparedness meteorologist.

Jennifer Smith with Environment and Climate Change Canada told a news conference Monday that while the "epicentre" of the heat is located in northern California, it is expanding north and east this week, where it is expected to linger.

An unrelated heat wave has meanwhile sent temperatures into the 30s in Atlantic Canada.