Extreme Summer Heat Continues with a surprise in Store!

 Manitoba continues to experience extreme summer heat particularly in southern Manitoba as a large broad upper Ridge continues to move over the prairie provinces. Find out when this heat will end in southern regions. 

Southern Manitoba will experience a short term heat wave as we head into the second half of the week , this will bring with it a risk for thunderstorms and humid conditions. 

Wednesday: The day will start off nice in the southwest and southeast regions. In the morning and afternoon hours there will be a risk for thunderstorms in central portions of Manitoba heading into the eastern regions of the province as well as the interlakes. There is a chance some storms could be severe. Otherwise expect sunny skies to prevail for the day . I would also expect it to be the hottest day of the week with high temperatures soaring into the high twenty degree range and low thirty degree range. Also of note will be the possibility of humidex values soaring into the high 30’s and low 40’s which will make it unbearable to be outside in . So much for sun tanning lol. I expect a high temperature of 34C for the city of Brandon (humidex 40C) and a high of 33C for Winnipeg (humidex 39C) . 

Wednesday Night: I would expect an increase in cloud cover towards the evening as an approaching trough moves into Manitoba, there will be a small risk for thunderstorms in the evening and overnight hours some of these storms may be severe however they are not expected to be widespread , mostly will be isolated and scattered. If storms don’t occur expect clear to partly cloudy skies. Overnight lows are expected to drop into the mid to high teens with Winnipeg only getting down to 19C and Brandon 16C. 

Thursday: Ongoing showers or thunderstorms in isolated sections are possible during the morning and early afternoon . Sunny skies are expected for the remainder of the day with a mix of sun and cloud. High temperatures on Thursday are expected to be in the high 20s to mid 30s, a high temperature of 33C with a humidex of 38C is expected for Winnipeg and a high temperature of 32°C with a humidex of 37C is expected for Brandon. 

Thursday Night: Increasing amounts of cloud cover look to enter southern regions of the province with partly to mostly cloudy skies expected around sunrise. Low temperatures are expected to drop to the high teens except for the interlake regions where you’ll see lows in the mid teens . A low of 17C is expected for Winnipeg and a low of 16C for Brandon. 

Friday (Here is your Surprise End to the heatwave!): An area of low pressure will be moving towards southern Manitoba, likely  entering the province by early to mid afternoon there will be a increasing risk of showers and thunderstorms by the afternoon into the evening hours. There are some model disagreements at the moment on timing and location of precipitation. The RDPS and GDPS seems to have the system located over southern Manitoba with a broad threat area for showers and thunderstorms whereas the NAM has the system located over the interlake portions of the province with a small area of showers and thunderstorms moving through in the morning and in the evening hours mainly impacting the interlake regions with a smaller threat further south . Based on model consensus I would say there is a possibility for thunderstorms some severe given current model trends show CAPE over 1,500J/Kg towards 2,500 J/Kg. Thunderstorms if they develop could pose a risk for hail, strong wind gusts and flash flooding . I would expect a high temperature of 27C for Winnipeg and a high of 26C for Brandon. 

The weekend: There be multiple chances for thunderstorms as a couple of impulses look to ripple across the ridge on the weekend. Temperatures look to continue to be quite warm but not as hot as it has been over the past couple of days high temperatures will moderate into the mid to high twenties.