Mountain Weather Forecast

A trough of low pressure maintains unsettled conditions with light to moderate convective precipitation over the north while southern B.C. experiences dry and sunny conditions with a warming trend.

As the trough moves into Alberta on Monday, a lee low develops along with a cold front draped across central B.C. This cold front will generate flurries, a risk of thunderstorms and bring cooler temperatures and lower freezing levels as it traverses into southern B.C. Heavy snow will also develop lee of Rockies, south of BYK ranges Monday and Tuesday with this cold front.

A second cold front over northeastern B.C. will bring snow to the North Rockies ranges on Tuesday.

Clear and cool on Wednesday under a ridge of high pressure.

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An upper trough over the Gulf of Alaska will be the weather maker over the next three days. Today, it will move into northern B.C. and bring general instability to the area with scattered flurries. It broadens on Monday while settling over B.C., enlarging its area of influence. To the east, a mesoscale upper low will develop and produce snow to the north and northwest quadrant on Monday. To its southern edge, an upper cold front will develop between the boundaries of the two airmasses and produce flurries along the front over southern B.C. The cold air aloft will also bring about the risk of isolated thunderstorms across central B.C. on Monday.

By Tuesday, the upper trough begins its journey east. The cold pool of air now sitting over southern B.C. will bring about convective precipitation from the SW ranges to the Monashees. The southern Alberta Rockies will see heavy snow on Tuesday.

An upper ridge building offshore will act as a block to any incoming Pacific weather systems, thus establishing the beginnings of an Omega blocking pattern for the latter half of next week.