- Issued at
- 04:00 PDT/PST
- Created by
- Kenabatic and Forecaster M
Cold Air Intrusion Intercepted
In the wake of the frontal disturbance as the Arctic front invades, occasional flurries and locally blowing snow over the southern third of the interior. Specifically near/south of Naksup. However, behind the front, drier and clear conditions will prevail with locally breezy conditions. The primary hazard however will be frigid arctic air engulfing our province over the weekend and early next week. Alpine temperatures should fall to as low as -25°C by Sunday morning.
The eastern Pacific high pressure system begins to break down on Monday allowing milder air to move in. At first, it will affect White Pass and the NW ranges before slowly working its way into the rest of the province towards mid-week.
An upper ridge of high pressure will continue to build towards Alaska today, keeping Pacific weather systems at bay. This will allow colder air from the Northwest Territories to further invade the province. An upper cold front associated with an upper shortwave trough will reside from Sparwood to Bella Bella this morning, then track into the states by this afternoon bringing flurries this morning followed by frigid air trailing in behind.
Alpine temperatures will be between -20°C and -30°C across the Rockies by Sunday morning.
The upper ridge begins to collapse on Monday. The first frontal system will move onto the Alaskan Panhandle spreading snow to White Pass. Alpine temperatures will warm to near -10°C across the NW ranges by Monday.
As the upper level ridge over the Pacific waters continues to weaken, flurries will develop over the Cariboos Monday afternoon/evening and persist for multiple days as the upper trough offshore swings towards the province.