Parts of southern Ontario remain under a severe thunderstorm watch or warning as Environment Canada said Tuesday night an "intense" line of thunderstorms is making its way across the province.

The following areas are under the storm warning:

  • Algonquin
  • Barrie-Orillia-Midland
  • Dufferin-Innisfil
  • Haliburton
  • Parry Sound-Muskoka

Environment Canada has also issued a storm watch for:

  • Burk's Falls-Bayfield Inlet
  • Grey-Bruce
  • Huron-Perth
  • Water-Wellington

A rainfall warning has been issued for:

  • Brockville-Leeds and Grenville
  • Ottawa
  • Cornwall-Morrisburg
  • Kingston-Prince Edward
  • Prescott and Russell
  • Smiths Falls-Lanark-Sharbot Lake
  • Stirling-Tweed-South Frontenac