Welcome Back To Hot And Humid Weather!

The week ahead will be another hot one for people living in Southern Manitoba as another ridge of high pressure starts building into the province. Allowing for another significant heatwave to make headlines in the region.

An area of high pressure will build in this week, allowing for hotter weather to return

The week will start off fairly cool for the heatwave with temperatures in the high twenties to near or above thirty degrees in Southern Manitoba on Monday and on Tuesday. Humidity levels likely will remain low on these day's making conditions feel fairly hot and dry. As we get into the middle of the week on Wednesday temperatures will be in the low to mid thirties, with the humidity levels making it feel like 40C or hotter. As a result various regions could have humidex advisories issued by Environment Canada due to the possible 40C+ humidex temperatures that could be in place. Once we get into the late week period temperatures will be around the 30C mark with humidity values remaining fairly high, making it feel still quite tropical.

Potential Exists for Severe Storms On Wednesday Evening/Night in Winnipeg and The Red River Valley, as there will be 4000 J/Kg of CAPE available in the region during that timeframe. Image is provided by Wundermap from Wunderground

The presence of hot humid weather over the Southern Part of the province this week will allow the atmosphere to become very unstable, giving a risk of thunderstorms on many days. With an area of high pressure over our region it makes it difficult to forecast thunderstorms, as high pressure tends to reduce thunderstorm activity. According to one of the blog's I read today mentioned that "the ridge we will be under won't be that good at reducing thunderstorm activity." So in Turn we may be in for more unstable weather than the usual stable weather we see with high pressure. The best chances for thunderstorm activity in Southern Manitoba appears to be during the second half of the week, from Wednesday towards the weekend and the beginning of next week. During the time frame the atmosphere will be very unstable and there will be some weather systems moving our region that could trigger storms. The potential will exist for storms that could be severe at times due to the instability present in the atmosphere. There also could be slow moving storms at times bringing the threat of heavy rainfall and localized flooding, with upwards of 100mm if one storm sits over the same area for an hour or more. The storms will be scattered to numerous during the second half of the week, although they will not be widespread. I will keep everyone updated on the thunderstorm potential with posts on Wednesday and on Friday of this week.

Overall expect a beautiful week with hot temperatures and sunny conditions, with a few days of thunderstorm activity that we may have to contend with.