Wednesday, January 24, 2007

Colder air set to return by Friday

850 mb prog - 6 am Friday morning

Enjoy the relatively mild weather today and tomorrow.. because things are going to get colder again starting Friday. A storm system moving across the northern Prairies over the next couple of days will sweep a cold front across southern Manitoba early Friday morning. Gusty northwest winds behind the front will draw colder Arctic air across the region, with temperatures falling Friday into the minus teens by afternoon. The cold air will become well entrenched over the weekend with highs only around minus 20 and lows in the minus 30s. Temperatures are expected to remain below normal next week into early February as a strong upper ridge over the West Coast gives mild weather over the west while a deep upper trough over Eastern Canada maintains cold air over central and eastern Canada.


  1. That cold air was delayed in its arival today.. with northwest winds tapping some of that western warmth from yesterday. We'll gradually get colder tonight and through the weekend, then near normal temps for the start of the new week. Long range guidance is hinting at another Arctic outbreak over the Prairies by late next week with well below normal temperatures over southern MB.

  2. Despite very warm air aloft, it did not mix down to the surface at Winnipeg. But in areas downslope of the escarpment like Morden, Portage, etc, the warm air always transfers down efficiently. Its as close to a "banana belt" as we'll get in Manitoba ;-)