Nice today.. colder Friday

Should be a nice day today with partly sunny skies and a mild westerly breeze pushing temperatures close to the 10 degree mark this afternoon over southern Manitoba, especially over snowfree areas. But the mild weather will be short lived as an Arctic airmass over northern MB pushes south on Friday. A sharp cold front is marking the leading edge of this airmass which is producing very cold temperatures of -20 to -30C over northern MB today. This cold front will push through central MB this evening and southern MB on Friday, although the core of the cold air will stay over the north as the cold front weakens somewhat. Nonetheless, I don't expect temperatures to climb much above freezing Friday over most of southern MB, along with occasional light snow as the colder air moves in.