More Rain in Niagara after damaging floods 

Between July 27 and Aug. 3, the city of St. Catharine's received over 250 mm of rainfall--and that was just from two storms! This caused widespread damage and flooding to thousands of homes, prompting the city to declare a state of emergency and seek provincial and federal aid.

For good reason, many locals have been on edge about what the next rainfall will bring. Current forecast models are predicting the bulk of Friday and Saturday's rainfall will stay south near Lake Erie, but we could see some locally heavy showers spill north.Warm, humid, and unsettled conditions are expected in Ontario as we head into the weekend

Friday: Widespread rains dampen southern, northeastern Ontario

Widespread rainfall, at times heavy, is possible through Friday morning into the early afternoon in areas including London, Hamilton, Niagara, and parts of the western Greater Toronto Area (GTA). This rain can exacerbate flood-related issues for areas still grappling with unprecedented floods from last week.

Saturday: Strong low with additional thunderstorm risk

Higher uncertainty exists surrounding Saturday's storm risk. Some heavy rain will track east through the GTA on Saturday morning. This area of precipitation may evolve into strong to severe thunderstorms as it approaches Kingston and Ottawa.

This system may carry upper-level wildfire smoke from British Columbia and Washington state, adding to the complexity of the forecast.

Environment Canada

Severe storm currently going on

@Narper

We are also getting hit hard and its heading to Grimsby /St Catherine, they dont need any more rain.

Its rotting the black cherries , Red haven Peaches and Bartlett Pears.

@sgtdjones

I cant believe it now....bright sunshine😀

 Two tornado reports across the region

Residents spotted at least two tornadoes across southern Ontario on Saturday as severe thunderstorms pushed across the region.

The first tornado reports came in shortly after 1:00 p.m. just north of Lindsay, about a 30-minute drive west of Peterborough. Officials with the Northern Tornadoes Project (NTP) confirmed on social media that a touchdown occurred near Lindsay.

The second tornado report came in near the community of Woodstock around 3:30 p.m., resulting in some damage reports and scattered power outages across the area. Experts with the NTP will survey the damage to assess whether or not a tornado occurred here.

Environment supported development of some rotation

A muggy airmass parked over southern Ontario provided a rich environment to fuel widespread thunderstorms throughout the region during the day Saturday. A cold front pushing in from the west, along with multiple lake-breeze boundaries, served as the triggers to kickstart storm development.

Some of those storms turned severe, capable of producing high winds, hail, and very heavy rainfall. Environment supported development of some rotation

A muggy airmass parked over southern Ontario provided a rich environment to fuel widespread thunderstorms throughout the region during the day Saturday. A cold front pushing in from the west, along with multiple lake-breeze boundaries, served as the triggers to kickstart storm development.

Some of those storms turned severe, capable of producing high winds, hail, and very heavy rainfall. A few of the thunderstorms latched onto those lake-breeze boundaries and began to rotate, prompting several tornado warnings.

A muggy airmass parked over southern Ontario provided a rich environment to fuel widespread thunderstorms throughout the region during the day Saturday. A cold front pushing in from the west, along with multiple lake-breeze boundaries, served as the triggers to kickstart storm development.

Environment Canada

@Narper

Its been a crazy half summer to date some vicious storms with nasty downpours.😳

@sgtdjones

Since morning bright sunshine with light breeze here...26 C feeling like 30C from now till tonight....adult pool party already in full swing in my neighbour's backyard.