After 3 straight weeks of below normal temperatures, some milder weather is finally returning to southern MB next week as a milder Pacific flow spreads across the Prairies. Temperatures in Winnipeg have been below normal since Jan 24th when we hit a high of -2C. Since then, we've gone 22 straight days below normal, with an average temperature of -22C so far this month, over 8C below normal for February. Temperatures by Monday will be climbing towards the -1C mark, and should stay near or above normal through Thursday (normal highs now are -8C). This will mark our first spell of above normal weather since mid January. Other than that, temperatures have generally been below normal since early December over southern MB.
The milder weather will be ushered in by a warm front which will crossing southern MB Sunday night from the west. Ahead of the front, a band of snow will spread into southwest MB Sunday afternoon, reaching Winnipeg and the Red River valley Sunday evening. The band of snow will last about 6 hours and will drop between 4 and 8 cm of snow across southern MB, including Winnipeg. Snow may be moderate to heavy at times and will also be accompanied by strong southerly winds gusting to 60 or even 70 km/h up the Red River valley. This will lead to extensive blowing and drifting snow Sunday evening with poor visibilities especially in open areas where blizzard conditions are possible. Keep that in mind if you have travel plans in the Red River valley Sunday night. Once the band of snow passes overnight Sunday, winds will shift into the west, tapping milder air from Alberta for Monday.
Rob's Obs Snowfall forecast for Winnipeg: Sunday February 16
(updated 9 am Feb 16)
Start time: 6-8 pm
End time: 2-3 am (Feb 17)
Snowfall: 4-8 cm, but extensive drifting and blowing snow
Visibility: Generally 0.5-1.5 km, occasionally 400 metres or less in snow and blowing snow
Winds: South 40 gusting 60 km/h during snowfall
Temperature: Steady around -10C during snowfall