LYTTON, British Columbia – A massive heat dome sprawled across the Pacific Northwest and British Columbia has not only shattered daily records, but for Canada , tied the hottest temperature the nation has ever recorded in September.

A thermometer in Lytton, British Columbia, recorded a max temperature of 104 degrees Fahrenheit (40.0 degrees Celsius) on Tuesday , setting the September heat provincial record for British Columbia and matching only two other times a Canadian city reported such heat this late in the year, according to Canada's The Weather Network .

The other instances were at Morden, Manitoba, in 1906 and in 1940 in Lost River, Saskatchewan, The Weather Network said.

WHAT IS A HEAT DOME?

The forecast is even a touch hotter for Wednesday, threatening to break the national re

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