The cloudier conditions we are experiencing over south-central and southeastern Manitoba will clear out this afternoon. In Winnipeg, we will see clearing within the next 2 hours. There may be a few showers and rumbles of thunder before the skies clear out, however the best risk will be south of the city. Carman, Morden, Morris, Steinbach and Sprague areas could all see this isolated activity over the next few hours.
Behind the cloud cover, things will heat up into the low to mid thirties. Many ares are expected to rise between 32 and 34°C. Humidity will also be a little higher today, with dewpoints in the high teens and near 20°C in some cases. That will bring humidex values into the high thirties, approaching 40 this afternoon and early evening, if you are not under a thunderstorm of course.
Speaking of thunderstorms, there is a good risk of another severe thunderstorm outbreak in parts of southern and central Manitoba today. Using MIST (Moisture, Instability, Shear and Trigger), all these ingredients are in play today. A low pressure system will be pushing into the Interlake late afternoon and early evening, with a cold front south of this. This will be the trigger. Moisture will be sufficient with dews in the 17 to 20°C range, and instability will be good in the couple thousand J/kg. Shear is expected to be significant today, and that is a main reason why today may be another severe windstorm day. Due to this high shear, an isolated tornado cannot be ruled out in the early stages of thunderstorm formation, in western Manitoba and the Interlake.
There will be strong capping however, and this cap is expected to be quite strong along and south of the Trans-Canada. As a result, the best chance for storms and severe weather will be in western Manitoba, into the Interlake and east/southeastern Manitoba.
Stay tuned to the comment section below, and my thunder forecast tab for updates today. I may issue some moderate severe risk areas in the Interlake later today once I get a better idea at where storms will form.
Here's some photos of the storms and the damage they caused on Sunday. Keep in mind, today could feature some of the same conditions:
|Storm approaching Winnipeg - I took this pic.. my twitter @jjcwpg|
|Northwest of Winnipeg. Pic by Scott .. via twitter @steinbachwx|
|Taken by Jodi Hafenbrak in Winnipeg|
|Tree blocking traffic on St. Anne's Rd.. pic by Raymond St. Mars.. via twitter @raydawg189|