Forecasters have been carefully watching the jet stream and pacific moisture as it moves across the U.S. that could develop into a messy Christmas Eve and Christmas Day from the U.S. Midwest to the Atlantic seaboard starting Tuesday, but as forecasters have a better idea of what this storm has, the forecast has changed somewhat for Sault Ste. Marie and Algoma.
Last week, it appeared the storm will hit directly over the Great Lakes, but current models now show most of the active weather will remain stateside causing travel nightmares right through to Boxing Day.
In the Sault, the question still remains what type of precipitation will fall. The latest forecast indicate rain to freezing rain for Wednesday. Light snow showers with very little accumulation is expected until Christmas Day.
Temperatures will actually be quite balmy for this time of year. Daytime highs are expected to reach 4c on Christmas Day with a wintery mix then changing to light snow for Christmas Day. That’s not to say we won’t see accumulating snows from possible lake effect flurries and squalls developing as winds switch back to a northerly flow. The bulk of the heavy lake effect snows are now expected to hit the U.P. of Michigan and the Parry Sound region off Georgian Bay.
Snowfall amounts are forecast to be minimal for Sault Ste. Marie with about 5 to 10cm at most for Christmas Day. Strong winds however might cause to low visibility at times. Temperatures fall back to normal values after Christmas and below normal heading into the New Year then temps rebound to above normal for the beginning of the New Year starting Thursday.