Unsettled weather to start, then sunny and mild

Issued: Monday, September 14, 2015 – Covering: September 16 – September 23, 2015

Reading Time: 2 minutes

Published: September 18, 2015

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This issue’s map shows the total amount of precipitation that fell across the Prairies during the 30 days ending Sept. 10. This period “catches” most of the heavy rainfall events that we’ve seen over the last part of summer. This map looks much like one from earlier this year, with most of the heavy rains falling in an arc around southwestern Saskatchewan. A couple of exceptions are northwestern Alberta and south-central Manitoba, which were quite dry.

After a very warm weekend, in which most locations across southern and central Manitoba came close to or even broke a few record-high temperatures, it looks like things will cool down a little bit for this forecast period. That said, it still looks like it’ll be fairly nice for the middle of September.

This forecast period will start off a little on the unsettled side, as an area of low pressure tracks along the U.S. border on Thursday. It will bring plenty of clouds along with a good chance of showers. Currently, it looks like this system will be fairly fast moving and should be off into northern Ontario by Friday. The coolest air with this system should stay to our north as winds become westerly on the back side of the system. Combine this with an area of high pressure to our south and the weekend looks to be pretty nice, with plenty of sunshine along with daytime highs in the low to possibly mid-20s.

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Weekly weather map as JPEG.

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Our weather next week will be dominated by a large area of low pressure that is forecast to develop over Alaska, then deepen as it tracks across northern Canada. This system will be similar to the system that brought the very warm conditions to our region last weekend. A southerly flow ahead of this low will help pull up nice warm air ahead of it early next week, but a cold front will bring cooler air into our region sometime on Tuesday. Again, like last week’s system, it doesn’t look like there will be any rainfall accompanying this cold front. High pressure is then forecast to build in, bringing more sunshine and seasonable temperatures to end off next week.

Usual temperature range for this period: Highs: 12 to 22 C; lows, 1 to 9 C.

About the author

Daniel Bezte

Daniel Bezte

Co-operator contributor

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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