Monday, May 9, 2022

Chance of showers and thunderstorms for the week

Much of southern Manitoba has been soaked with rain and thunderstorms over the past week, this pattern looks to continue, unfortunately. Another area of low pressure is forecast to move into our region on the day


(Above): Green is light rain, yellow is heavy rainfall. During this afternoon a batch of showers and embedded thunderstorms will continue to impact southern Manitoba regions with a lot of rain with it, environment Canada has already issued a special weather statement for much of southern Manitoba in regards to this event. Consensus shows there will be a initial batch of precipitation today with some embedded  thunderstorms non severe mainly. 


Then as the low moves into the red river valley with a dry slot another round of possible convection could arrive by evening. 15 to 25mm likely this afternoon with another 5-10mm overnight. A general 20 to 40mm of rain is possible with higher amounts falling, in total. This is a huge concern as areas south of Winnipeg around highway 75 are dealing with serious flooding, the setup weather wise will just increase the flood waters and damage already caused (as noted above with the flash flooding risk map created by the national weather service in the states). 

Temperatures for today will warm into low to mid teens, in southeastern Manitoba while areas in the southwest will only get into the mid to high single digits or the low teens. The low should start moving out of Manitoba by the evening to overnight hours, with showers possible into the overnight period. Temperatures tonight will drop into the mid to high single digits, for most. 

Heading into the rest of the first half of the week calmer weather should move in as a high pressure system builds in, temperatures will rise into the mid to high teens on Tuesday and Wednesday with overnight lows on both days dropping into the low to mid single digits.

Second half of the week: More unsettled weather is possible with another few areas of low pressure forecast to move into our region, on Thursday and Friday. I will be watching closely as more rain and thunderstorms could create a risk of more flood potential. The risk of severe weather is still yet to be determined. Temperatures will continue to be a little more cooler than average with high temperatures in the low to mid teens with some days in the high teens towards the weekend, with overnight lows miss nights dropping into the seasonal averages of the mid to high single digits with some overnight lows especially in the southeast where lows could stay above 10C in the low teens. 


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