The severe thunderstorm warnings that were in place for the GTA were called off this afternoon.
The heavy rain and lightning the region received was small in comparison to the damage caused in the Muskoka region.
Environment Canada had issued tornado warnings for areas including Huntsville and Parry Sound.
Some severe damage has been reported in the area.
Photos on social media show 100-year-old trees snapped, and downed by the heavy winds.
Heavy thunderstorms downed trees and power lines in parts of Muskoka.
Hydro One tells News talk 1010 more than 19,000 customers are without power.
those areas include Hunstville, Orleans, Bracebridge, Brockville and Bowmanville.
Hydro One is working to restore all power to the affected areas, but some may not get their power back until Saturday.
For those who have mobile access, you're asked to check the Hydro One app for updates.