Saturday, March 21, 2009
Rain moving in Sunday.. more on the way Tuesday..
Models are coming in line that southern MB will be seeing two waves of precipitation starting tomorrow. On Sunday, a band of showers and possible thunderstorms will develop along the MB/SK border and progress eastward through the day, likely reaching Winnipeg and the Red River valley by late afternoon. Rainfall could be heavy at times, with amounts of 15-25 mm possible Sunday night over the Red River valley. This band of rain will move off by Monday morning, with little additional rainfall expected Monday into Monday evening. However another wave of precipitation is expected to move into southern MB overnight Monday into Tuesday as a storm system moves up over the Dakotas. This system is forecast to give another 15-25 mm of rain over southern MB, likely changing to snow over western MB Tuesday as colder air wraps on the backside of the storm. This colder air will likely change any lingering rain to snow over the Red River valley Tuesday night into Wednesday, with accumulations of 10 cm possible. All in all, it looks like a prolonged period of unsettled weather moving in between Sunday and Wednesday, with significant precipitation amounts that will elevate flooding concerns throughout southern MB. Stay tuned..
Posted by rob at 9:11 AM