Heat and humidity With a chance for thunderstorms

Southern Manitoba is expected to continue in the above normal temperature pattern for this weekend heading into next week, multiple chances for storms will also occur as we experience the heat and influx of humidity from the United States . Read more below... 

Southern Manitoba is expected to enter a prolonged period of heat and humidity for this weekend, its  already started this will continue into early to mid next week. Multiple low pressure systems are expected to move through Central Manitoba Bringing a southerly flow with a warm and humid air mass in from the southern United States. 

  For the rest of the day today expect high temperatures in the southwest portion of the province to be in the low to mid 30s with humidity values feeling closer to 40C. As well areas in the southeast can expect temperature in the high 20s to low 30s with some areas experiencing humidex values surpassing 38C. A cold front will gradually lift northeast throughout the evening sparking off thunderstorms, some may be severe areas  will be From the Sask border by Melita and the USA border northeast to The interlakes. As far as east as Carberry.

 The night ahead thunderstorms will occur in the southwest, ML CAPE values will be in the 2000 J per kilogram range. As that is in place there is a risk for severe thunderstorms this evening into Western  in portions of Manitoba and the Interlake regions. Moderate size hail , strong winds and frequent lightning are a possibility. A possibility of thunderstorms exists in the red river valley but the  chance is very slim .  Tonight expect temperature to not really drop much with overnight lows only getting into The low 20s for much of the southern portion of the province a few regions by the parklands may only be in the 15 to 20° range. A low temperature of 21 Celsius as expected for Winnipeg, with a low temperature of 19 Celsius is expected for Brandon. 

Sunday will be a hot one, temperatures will soar into the low to mid-30s for the majority of southern Manitoba on Sunday, humidex values will also climb into the high  30s to lows 40s on the day. In the evening a cold front approaching from the united states will slide north and allow for Severe Thunderstorms to develop in the southwest portion of the province. as MLCAPE values will be in the 3000 J per kilogram range expect hail from the size of toonies to golf balls,  winds in excess of 100 km an hour and frequent lightning. Thunderstorms will move north east throughout the evening areas will be impacted by these thunderstorms as far east as Portage la Prairie. overnight lows on Sunday will only drop into the high teens to mid 20s. And overnight low of 19 Celsius can be expected in Brandon and a low of 21 Celsius in Winnipeg. Winds will also continue to be gusty out of the south.  There may be a chance that some of the thunderstorms that occur in the south west portion of the province travel, east into the red river valley areas that chances are slim though as most activity or weaken by the time it gets the portage la prairie. The reason for the warm overnight lows will be the high dew points temperatures, they will be hanging around 16 to 20 Celsius. 

The day on Monday looks like a severe weather threat will initialize in the evening hours high temperatures on Monday will be extremely warm reaching into the high 20’s and low 30’s once again. A high of 32C expected for Winnipeg and a high of 31C for Brandon. Dew points in the 18-23C range will supply MLCAPE values  in excess of 4000 J per kilogram in the southwest part of Manitoba.  A cold front will gradually move east north east throughout the afternoon and evening .   

A concern will be areas in the South western portion of Manitoba Which may receive multiple rounds of thunderstorms over the coming days that may  give regions more rainfall than they need. Areas from the parklands into Southwestern Manitoba may receive more than 50 to over 100 mm of rain.  Areas east of these fronts specifically western red river valley into eastern Manitoba will not be impacted by these thunderstorms so the heat will be a concern over the weekend into early next week heading into see late next week which will put a lot of peoples health at risk for heat strokes and breathing issues. For more information on how the heat impacts people particularly elderly and children Visit http://www.manitoba.ca/health/publichealth/environmentalhealth/heat.html

The Heat will continue This weekend into late next week when a brief reprieve will occur with thunderstorms possible on Tuesday and Wednesday. It will continue into the end of next week throughout much of the Central and Southern regions of Manitoba.