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Forecast – for Sep. 15, 2011

After a week of some truly amazing weather we are back down to reality this week as fall weather tries to take hold. A large region of cool arctic high pressure will dominate our weather for the first half of this forecast period. The centre of this large area of high pressure is forecasted to be over top of us by Wednesday. Even though we should see a fair bit of sun, temperatures will be cool, with highs near the low end of the usual temperature range for this time of the year. Combine a couple of really cool days on Wednesday and Thursday with clear skies and light winds at night, and we could be in for the first frost of the fall. Overnight temperatures will be really close to freezing, and I wouldn t be surprised if we do get a widespread frost.

By the weekend the high will have pushed off to the southeast, placing us in a return southerly flow on the backside of the high. This should help temperatures to warm back up into the low 20s on both Saturday and Sunday.

To start next week, the weather models are showing a rather large area of low pressure tracking through central and northern regions of Manitoba. It currently looks like most of the precipitation with this system will stay over northern regions, but the odd shower can t be ruled out. Temperatures should be fairly mild, but a lot will depend on the amount of sunshine that we get. The weather pattern continues to look active into the second part of next week, as a second area of low pressure is currently being forecast to develop to our west and then slowly move eastwards.

Usual temperature range for this period Highs:12 to 22 C Lows:1 to 9 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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