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Forecast – for May. 19, 2011

With strong high pressure firmly in place across the Prairies it looks like the first half of this forecast period will be sunny, dry and warm. A strong blocking ridge of high pressure that brought plenty of sunshine and fairly mild temperatures over the weekend and into the start of the work week will continue to dominate our weather over the next few days.

A large and deep area of low pressure is forecasted to form over the central U.S. during the second half of this week. This low will try to push to the northeast, but it currently looks like the ridge of high pressure in place over us will keep most, if not all, of this system to our south. We may see some high clouds from this system on Friday and Saturday, with southern regions possibly seeing a shower late on Saturday. Temperatures over the long weekend will depend upon how far north this low will push. Northern regions should stay mostly sunny, with highs continuing in the low 20s. Farther south, if the showers do move in, temperatures will be cooler, with highs in the mid-to upper teens.

A second area of low pressure is then forecast to develop in the same area to start off the following week. At the same time, a strong area of high pressure is forecast to develop to our north and push south. The weather models show this high winning out and keeping the southern low well to our south. This high looks like it will bring us plenty of sunshine for next week, but the week will begin with cool temperatures. I wouldn’t be surprised if we see some frosty mornings next week, but daytime highs should slowly warm back up toward the 20 C mark by the middle of the week.

Highs:15 to 25 C. Lows:2 to 11 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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