Tuesday, September 13, 2011
Falling temperatures, lake effect precipitation and frost.. fall weather pushing into southern Manitoba today..
A cold front through central Manitoba this morning will push south today, ushering in a flow of unseasonably cold air from Northern Manitoba southward. This front will be accompanied by a few showers as it moves across southern Manitoba around midday today, followed by gusty northerly winds and falling temperatures this afternoon. The flow of colder air over the warm lake waters of the Manitoba lakes will likely set up some heavier bands of rainshowers off Lake Winnipeg and Lake Manitoba later today into tonight, with narrow bands of locally heavy precipitation possible mainly east and west of Winnipeg. Strong northerly winds of 50-70 km/h will also cause large waves and rising water levels along the south shores of the lakes today into tonight. Things should settle down Wednesday as high pressure drifts across southern Manitoba easing winds and weakening lake effect precipitation. This area of high pressure however will likely produce the season's first widespread frost across southern Manitoba Thursday morning with temperatures of 0 to -3C likely in many areas including the Red River valley.
Posted by rob at 10:32 AM