Heat and Humidity increasing , potential chances of showers and thunderstorms

This week in southern Manitoba will experience one of the warmest rounds of weather we have seen in at least a few weeks, a ridge will move in over our area. A southerly to southwesterly flow will move into our region, boosting temperatures as we move towards the middle of the week. 

However today a trough of low pressure will be moving  out of our region bringing in a northwesterly flow aloft, earlier today showers and some heavy rainfall moved through as the trough sat over our area. Cloudy skies are likely in areas of south central and southeastern Manitoba today, with sunny skies in the southwest part of Manitoba. Temperatures today will only sit in the 19-21C range to low 20’s, with the warmer air in the western half of Manitoba. Overnight low temperatures tonight will be cooler, just below or around 10C in forested regions of southeast Manitoba. Temperatures elsewhere will drop into the low to mid teens. For the rest of the week, there’s a good chance of some beautiful warm weather moving in. How warm???!! 

Temperatures on Tuesday will jump into the mid to high 20’s, then on Wednesday we will finally start seeing highs in the mid to high 20’s, on Thursday temperatures in the high 20’s to low 30’s maybe mid 30’s. Dewpoint temperatures will also sit in the mid to high teens, which may increase the overall humidex to the low to mid 30’s then on Thursday into the high 30’s. Overnight lows this week will drop into the low to mid teens on Tuesday night and on Wednesday night into the high teens to low 20’s in the parklands. There’s likely going to be an increased risk of potential thunderstorms on Wednesday and Thursday  as a low pressure system with a cold front moves in from northern Saskatchewan.

(Above Wednesday and Thursday data for storm instability).  Whether severe storms will happen is dependant on how much moisture and instability arrives. Capping may be an issue but this far out is hard to say for sure. We will monitor it. This weather will be quite warm for the month of September our average is 21C this time of year in Winnipeg. 

Have a great week everyone!