Monday, August 27, 2012

Heat To Dominate The Week Ahead

More hot weather will be welcomed this week as August comes to a close, we might get the hottest weather we have ever had this summer in southern Manitoba!
The NAM is hinting at temperatures in the high 30's if we don't experience much in the way of humid weather (Top Left). It may not be as hot on Wednesday if we get more humidity as what the GFS is saying (Top Right).

Another significant ridge of high pressure will build over Manitoba this week, bringing more possible hot weather back to the province. Tuesday will be a nice day in Southern Manitoba, where temperatures will climb up to and around 30C South, West and East of Winnipeg. Areas in the interlakes and in the parklands region may not get quite as hot, only getting near 28C. Altogether humidity levels should be quite low. The real heat and possible humidity will come on Wednesday as it could potentially be the warmest day of the year so far. With most temperatures reaching 34C+ feeling like the mid 40's,  in Southern Manitoba. Although things may get fairly hot if moisture content drops throughout the afternoon. To get a better idea of temperatures in one region (Winnipeg) here is a look at what some of the models are predicting...
  • GEM-REG: 32C feeling like 42C
  • NAM: 37C with low humidity
  • GFS: 31C feeling like 42C
  • ECMWF: 32C
Based on recent weather models and forecast frontal positions I would pick the GFS, as there appears to be a warm front sitting over Southern Manitoba on Wednesday ahead of another cold front. This means that our temperatures would feel closer to 40C with the humidity, and humidex advisories may have to be issued. However if the GFS turns out being the wrong solution, we may see the real heat as per what the NAM is predicting (meaning temperatures in the high 30's.) It all depends on moisture content, the more moisture you have the less the air can be heated, its the opposite if you have less moisture that would allow for hotter weather. I will be providing updates on twitter letting everyone know what we can really expect for temperatures on Wednesday. It is too early to tell at this point. I will also have a for sure answer on Wednesday's Post.

Sunny Conditions should be in place throughout Wednesday with little in the way of cloudcover. Things will start deteriorating in the evening hours as a cold front nears and passes, thunderstorms will be likely given the heat and or humidity that will be in place. Severe weather would be possible as it is still the summer season. Cooler Weather will be on the way for Thursday and Friday with temperatures in the mid to high 20's, behind the cold front. Get out there and enjoy it!

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