Issued: Monday, December 7, 2009 Covering: December 9 –December 16

Last week’s forecast played out not too badly. We did see an Alberta Clipper during the first half of the week. The clipper did move a little further south than originally expected, bringing the season’s first significant snow to extreme southern areas. The Alberta Clipper forecasted to graze southwestern Manitoba over the weekend did form but it dove nearly straight south and gave Alberta some miserable weather. Finally the projected cold air outbreak did occur and that feature will dominate this forecast period.

Arctic high pressure combined with a large area of low pressure over Eastern Canada will keep our region in a predominately northwesterly flow for nearly all this forecast period. We will see reinforcing shots of cold air during the first half of this forecast period which will eventually cool us down to the low end of the usual temperature range for this time of the year.

The forecast for next week is a little uncertain at this time. Some of the models are leaning towards a return of milder weather, while other models are keeping the cold air around. I’m going to go with a return to milder conditions. If we do see this, there will be a chance of some snow on Tuesday or Wednesday as the warm air pushes in. Currently it does not look like there would be much snow. In fact looking out to almost Christmas the models are not showing any really good chances for significant snowfall.

Usual temperature range for this period: Highs: -17 to -2C Lows: -27 to -11C

About the author

Co-operator contributor

Daniel Bezte

Daniel Bezte is a teacher by profession with a BA (Hon.) in geography, specializing in climatology, from the U of W. He operates a computerized weather station near Birds Hill Park.



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