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Forecast – for Aug. 25, 2011

It looks like we’ll see at least one more week of warm summer conditions before we start to feel the first taste of fall. High pressure will dominate most of our weather during this forecast period, bringing with it plenty of sunshine and warm temperatures. On Thursday and Friday we’ll see a weak area of low pressure slide by to our north, which may bring a few clouds to central regions. By the weekend, high pressure will build in from the West behind this low. The combination of low pressure to our east and high pressure to our west will place us under a northwesterly flow on Thursday and Friday, resulting in slightly cooler weather. We should expect high temperatures on these days to be in the low 20s.

As the high pushes to our south and east we will see a return flow of warmer air develop on Saturday, with high temperatures over the weekend expected to be in the upper 20s. We’ll then have to keep our eyes on a developing area of low pressure to our west. The weather models are currently predicting it to move through southern and central regions of Manitoba late on Sunday and into Monday. Confidence in this system is not that high, but we’ll likely see thunderstorms develop with this system late on Sunday, which could develop into an area of general rain for Monday.

By the middle of next week the models develop a strong area of low pressure to our west and then track it through central and northern regions during the second half of the week. While this system will probably not bring any significant rain to southern areas, cooler air will move in on the backside of this system, bringing the first taste of fall.

Usual temperature range for this period: Highs:17 to 27 C.Lows:5 to 14 C.

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