Sunday, August 9th 2020, 6:00 pm - Severe storms have moved out of southern Manitoba and will continue to move east through northwestern Ontario in the evening, with a slim tornado potential.
Two days after the strong tornado that killed two people in Manitoba Friday, the risk returned to Manitoba Sunday, this time in the southeast. Severe storms that fired up in the afternoon have now moved into northwestern Ontario, where they will continue tracking through the evening before winding down overnight. The risk for a tornado, albeit a low one, lingers with the storms in northwestern Ontario. There's a chance of funnel clouds for more northern areas of Manitoba and Saskatchewan while, further west, Alberta eyes the return of colder temperatures. A closer look, below.
- Severe storms moves through northwestern Ontario Sunday evening, wind down in the overnight
- Some chance of funnel clouds in northern Manitoba and Saskatchewan
- Major cooldown for Alberta early next week
- Keep an eye on weather ALERTS in your area
SUNDAY: SEVERE STORM POTENTIAL FOR NORTHWESTERN ONTARIO
The risk for severe storms has eased off in southern Manitoba as storms have moved into northwestern Ontario Sunday evening. The storms will continue tracking east through the latter before weakening and dissipating in the overnight hours. There is still a slight risk of a tornado with the storms moving through northwestern Ontario.
Forecasters are particularly wary of the risk of one or two tornadoes in northwestern Ontario because of abundant atmospheric shear -- differences in wind velocity and direction with altitude -- increasing the possibility of rotation in thunderstorms.
Somewhat west, parts of northern Manitoba and Saskatchewan are at risk of seeing funnel clouds, with a cool upper low also providing some rotation. Funnel clouds are typically harmless, and though they may sometimes touchdown to form weak landspout tornadoes, the risk Sunday looks to be low.
BEYOND: COOLDOWN BEGINS FOR ALBERTA
Severe weather risk subsides somewhat to open up the work week, with mostly seasonal temperatures across the board.
That will change in short order for Alberta, however. Tuesday sees cooler air flood the province, ushered in by an upper trough, such that Tuesday's daytime highs will struggle to reach 20°C in a lot of places, though warmth holds on longest in extreme southern areas.
That chill looks to continue through the rest of the week, punctuated by the occasional shower, and it's not until next weekend where Alberta looks to claw its way back to something closer to seasonal.
Check back on the forecast as the week progresses.