The final days of July will be marked with some humid and unsettled weather across southern Ontario.
That’s as a cold front makes its way through on Tuesday, sparking thunderstorms across parts of the region and sending temperatures back to more seasonal values for the start of August.
We take a look at the storm threat and biggest risk areas on Tuesday, plus a sneak peek at a glorious August long weekend shaping up.
Severe storms fired up across parts of southern Ontario on Monday, with the rising heat and humidity being a key ingredient in fuelling those storms. Most of them had died down by sunset or at least fallen below the severe threshold, but with enough lingering energy in the atmosphere, the storm threat lingered right into the evening and overnight for more easterly parts of the region, while widespread rain showers pushed into the Greater Toronto Area.
As the low-pressure centre moves north into James Bay, this active cold front, moving slowly toward the Lower Great Lakes, will bring another day of spotty storms for parts of the region, including Niagara, parts of the GTA, and southeastern Ontario.
The threat for rain showers and mostly non-severe thunderstorms will persist through the afternoon hours on Tuesday, although with a risk for severe storms to develop across parts of eastern Ontario and southern Quebec ahead of the cold front. Heavy rain and strong winds will be the biggest threats associated with the thunderstorms.
The widespread heat warnings that kicked off this final week of July have ended as the cold front helps to cut back on the humidity as it ushers in some drier air from northern Ontario.
Temperatures across the board are expected to be right around the seasonal mark of 27°C as we head into the new month of August on Wednesday. Abundant sunshine and lower humidity will also make for some ideal summer days heading into the upcoming August long weekend