Slightly cooler weather with Showers and Thunderstorms

 Southern sections of Manitoba will likely experience a period of unsettled weather over the next 24 to 48 hours, a low pressure system will be moving into southern Manitoba bringing with it another round of unsettled weather with showers and potential thunderstorms. Find out when and where in this weeks blog. 

Wednesday: This is when the pattern begins to change, a low pressure system will be off to our southwest in Montana, ahead of it a large area of cloud cover will filter into the region bringing with it a moist airmass. There will be partly cloudy to mostly cloudy skies as the system approaches, there also will be a large area of showers moving through the central parts of Manitoba in through the interlakes and western Manitoba including southwestern Manitoba. There’s a smaller chance for showers south of the Manitoba lakes. Amounts of 5-10mm is likely in the areas that receive rainfall. Temperatures on the day Wednesday will reach the mid to high teens with areas closer to the American border along and south of highway 1 seeing highs in the low 20’s. 

Wednesday night (Above simulated radar, lightning density, and rainfall amounts in inches for Wednesday Night): This is where the weather gets interesting, by early evening a large area of warm air will move north as a warm front sits just to the south of the border. This will allow thunderstorms to develop over southwestern Manitoba moving into the red river valley and eastern Manitoba. As these sit over the same area with the warm front staying just south of the border there’s the  likelihood of them training and moving over the same area for long periods of time, the reason being the flow will be west to east and the warm air advection will not move much further north than just south of the lakes. This may increase the risk for flash flooding potential. I will monitor this as more data comes in. Temperatures will drop into the high single digits to the low teens, on Wednesday night. 

Thursday and Friday: Calmer weather will arrive , there will be mostly cloudy skies expected on the day Thursday. There will also be cooler temperatures with highs on Thursday reaching the mid teens. Thursday night much of the same with low temperatures reaching the low teens and high single digits. Friday will only see highs in the low teens.