Sunday Dec 21st 9:30am.. Welcome to winter. Winter officially begins at 7:03pm this evening here in the Maritimes but the weather is anything but. A large but rather weak area of high pressure located in Quebec this morning will slowly drift across the Maritimes over the next couple days maintaining a quiet weather pattern over the region. All eyes then shift to the Great Lakes as a very large and powerful storm system develops on Christmas Eve then tracks northward into Quebec. Strong southerly winds will usher in very mild temperatures for Christmas. An occluded front will then push across the Maritimes on Christmas Day bringing heavy rain to the region but details are still sketchy on amounts. The system pulls away early Friday but a secondary weaker low pressure system is then expected to pass north of the region on Saturday bringing another round of rain (or snow to northern areas).
Precipitation.. Chance of a flurrie over the next few days then rain associated with the big system over the Great Lakes begins later Christmas Eve (Wednesday) becoming heavy on Christmas Day ending near dawn on Boxing Day (Friday). Early rainfall projections of 30-50 mms possible but this will most likely change over the next couple days with updated data. Rain redevelops again late Friday night and continues on Saturday.
Temperatures.. Near normal (Maybe slightly above) today through Tuesday then the warm up begins on Wednesday with temps a few degrees above normal then the big warm-up occurs on Christmas Day when temps should climb into 8/10 range. Friday and Saturday cooler but still above normal. Temps should return to normal for the beginning of next week.
Wind.. Very light NE winds today and tomorrow shifting to SE on Tuesday then increase to brisk SE on Wednesday further increasing to strong SE on Christmas Day. Winds shifting and diminishing to brisk SW on Friday.
Watches/Warnings.. None for PEI at this time but I expect a special weather statement to be issued tomorrow or Tuesday for the upcoming weather event.
Today.. Mostly cloudy, very light NE winds, highs 0/-1
Tonight.. Mostly cloudy, calm winds, lows -2
Monday.. Mostly cloudy, very light NE winds, highs 0/-1
Tuesday.. Mix of sun and cloud, light E-SE winds, highs +1
Wednesday (Christmas Eve) .. Overcast, rain developing late, brisk SE winds developing, highs +3
Thursday (Christmas Day).. Rain at times heavy, strong south winds, highs 10 by evening.
Friday (Boxing Day).. Rain ending near dawn followed by sunny breaks. Rain redeveloping late, brisk SW winds, highs +4
Saturday.. Rain, SE winds, highs 5