Environment Canada has issued a severe thunder storm watch for Milton. Storms could cause wind gusts of up to 90km/hr and heavy rainfall this afternoon, and early evening. The office of the Fire Marshall, and Emergency Management advises people to take cover when there are signs of a storm. To report hydro outages call Milton Hydro at: 1-844-644-9376.. Environment Canada issues watches when Severe thunderstorm watches are issued when atmospheric conditions are favourable for the development of thunderstorms.