After a brutally cold weekend that saw temperatures drop to the minus 30C mark and windchills of -40 or lower, southern MB awoke to a different world this morning as temperatures soared into the minus single digits by 8 am.. a difference of +25C from 24 hours earlier. In Winnipeg, the temperature at 8 am was -4C, after being -30C at 8 am Sunday, the 18th greatest temperature rise within 24 hours in Winnipeg since 1953. Southwest winds ushered in a milder Pacific airmass over southern Manitoba overnight, flushing out the Arctic air that had been entrenched over the area since Dec 9th. And the good news is the above normal temperatures should continue the rest of the week, allowing for a pleasant lead up to the Christmas holidays. A couple of fast moving clipper systems will bring an occasional coating of snow (2-4 cm) both today and Wednesday, but overall, no major system are expected to impact southern Manitoba this week.
|Greatest temperature rises within 24 hrs in Winnipeg since 1953
Data courtesy of @jjcwpg
Potential winter storm for Christmas Day/Boxing Day?
The benign weather pattern may come to end over the Christmas holiday weekend as long range models are indicating the potential for a strong winter storm to move across the northern Plain states and/or northern Minnesota by Christmas Day or Boxing Day. It's much too early to say if this storm will impact southern Manitoba and how badly, but there's growing consensus that a major storm system will be tracking across the northern Plains sometime over the Christmas/Boxing Day period. At this point, all we can say is to keep an eye on this potential winter storm that could be impacting holiday travel in southern MB (especially RRV and SE MB) depending on how it tracks. Realize however that models will be jumping around on the possible solutions on this storm system over the next few days until they get a clearer picture of where this storm will track. Stay tuned..