Environment Canada has issued a severe thunderstorm watch issued for North Bay-West Nipissing, Greater Sudbury and New Liskeard-Temagami.
"Conditions are favourable for the development of severe thunderstorms this afternoon," the Environment Canada (EC) thunderstorm watch stated.
"Primary threats from these thunderstorms include wind gusts up to 100 km/h and hail size up to quarter size.
"Strong wind gusts can toss loose objects, damage weak buildings, break branches off trees and overturn large vehicles. Intense lightning is likely with any thunderstorm that develops."
The release reminds residents that lightning kills and injures Canadians every year.
"Remember, when thunder roars, go indoors," EC stated.
"The Office of the Fire Marshal and Emergency Management recommends that you take cover immediately if threatening weather approaches."
Severe thunderstorm watches are issued when atmospheric conditions are favourable for the development of thunderstorms that could produce one or more of the following: large hail, damaging winds, torrential rainfall.