A tornado warning has been issued for Savant Lake and Sturgeon Lake in northwestern Ontario. Here's the latest from Environment and Climate Change Canada on how to stay safe.

A line of severe thunderstorms crossed the border and made a mess in southwestern Ontario on Saturday, blocking streets with downed trees and knocking out power to thousands. The storms pushed through Windsor around 1:30 to 2:00 p.m. local time, arriving with strong wind gusts and heavy rainfall.

WEATHER ALERT ENVIRONMENT CANADA *************************************** Tornado warning - issued for: Temiskaming Shores - Temagami

A tornado warning has been issued for several municipalities in eastern Ontario. Shortly before 3:30 p.m. this afternoon, Environment Canada announced that a warning is in effect for Merrickville-Wolford-Kemptville,

Localized flooding and strong wind gusts will be the predominant threats Sunday—but some rotation can’t be ruled out

A severe thunderstorm is possibly producing a tornado in eastern Ontario. Environment Canada has issued a tornado warning for communities such as Morrisburg and Spencerville. As of 3:47 p.m., the storm was north of Spencerville and moving east.

Summer in Ontario may bring with it warm weather, but last week's tornado in Lucan is a reminder that it’s also tornado season.

Severe weather warnings and watches were issued for parts of southern Ontario Wednesday afternoon. Just after 2:30 p.m., Environment Canada said meteorologists were tracking a severe thunderstorm capable of producing up to nickel-sized hail and heavy rain.

3:21 p.m. EDT - A tornado watch is in effect across portions of northern Ontario amid a severe storm threat on Saturday afternoon. A tornado watch means that conditions are favourable for the development of tornadoes.