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One last shot of arctic air

Issued: Monday, Mar. 2, 2015 – Covering: Mar. 4 – Mar. 11, 2015

weather map western Canada

It looks like this forecast period will be a transition period, as the weather models have been showing a switch in our weather pattern towards a much more spring-like one.

This forecast period will start off much like all the forecasts for the last month, with an area of arctic high pressure dropping southeastward. This high will bring plenty of sunshine along with cool conditions. The high will push through our region on Wednesday and will be to our southeast on Thursday and Friday. This means Wednesday will be the coldest day, with temperatures moderating on Thursday and Friday as our winds become southwesterly.

Over the weekend, the weather models show a small area of low pressure sliding across our region. The exact path and strength of this system is uncertain, but a few locations might see a couple of centimetres of snow. Otherwise, expect a mix of sun and clouds with maybe the odd flurry, along with high temperatures in the -4 C range.

Weak high pressure will follow this low — and while the high’s origins are in the Arctic, it doesn’t have a lot of cold air with it. We might see temperatures drop off a couple of degrees on Monday and Tuesday, but with plenty of sunshine and light winds it will feel pretty nice.

This area of high pressure is then forecast to strengthen as it moves over the Great Lakes. At the same time, a large area of low pressure is forecast to move in off of the Pacific into northwestern Canada. This will help to create a fairly large southerly flow across western and central North America by next Wednesday, which should push temperatures in our region above the 0 C mark for the first time since January.

Usual temperature range for this period: Highs, -11 to +2 C; lows, -25 to -8 C.

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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