|GDPS model showing -35C|
cold core at 850 mb over
southern MB Sunday
Thursday, January 02, 2014
Clipper system to bring in snow and milder temperatures Friday.. but turning frigid again for weekend. Brutal windchills Sunday into Tuesday..
The brutal cold snap which has been locked over southern Manitoba since last weekend will ease for one day Friday as an Alberta clipper system tracks into North Dakota. This system will spread some snow across southern Manitoba tonight with 2 to 5 cm possible by Friday morning, especially north of Winnipeg. On Friday snow will intensify with 5 to 10 cm possible across a wide swath of southern MB including Winnipeg. Some areas such as around the Riding Mountains and Whiteshell may even see 15 cm by the time the snow tapers off Friday evening. In addition the system will be bringing in gusty south winds overnight and into Friday morning that will give blowing and drifting snow, with poor visibilities in open areas. Highway conditions will not be ideal Friday morning so be prepared to take some extra time to get your destination if travelling. The good news is that temperatures will finally moderate to above average values Friday afternoon with highs near -10C in Winnipeg and -5C along the US border. Unfortunately, the respite will be short lived as winds shift into the north behind the clipper system Friday evening and bring a return of Arctic air across southern MB for the weekend into next week. Gusty north winds Friday night and falling tempertaures will result in blowing snow and poor visibilities across the Red River valley, especially towards the US border.
Frigid air will return for the weekend, and in fact, conditions look even worse than the past week as northwest winds will be increasing out of the northwest to 30 km/h with gusts to 50 by Sunday and Monday.. combining with -30C temperatures to produce wind chills in the minus 45 to minus 50 range. As a result, this next Arctic outbreak will feel even colder than the past week when winds have been relatively light.. so be prepared for brutal wind chills this weekend into early next week. Frigid conditions will continue much of next week, although long range models are finally hinting at the Arctic pattern breaking down later in the week into next weekend with milder conditions moving in across the Prairies. Let's hope they're right!
Posted by rob at 4:31 PM