Environment Canada has issued a special weather statement warning of a fall storm in all of southern Ontario with rain and strong winds.
The storm should arrive by Tuesday evening or Wednesday morning and is a developing storm over the American Midwest that is expected to merge with moisture from the remnants of hurricane Patricia.
Rainfall associated with this storm is forecast to spread into Southwestern Ontario late Tuesday night and reach the Golden Horseshoe area by Wednesday morning.
The rain will continue all day Wednesday and will be heavy at times with a few thunderstorms also possible.
Total rainfall amounts are still uncertain, but between 25 and 40 mm are likely for most locales by the time the rain tapers to scattered showers from west to east Wednesday night through Thursday.
Some regions close to Lake Erie and Lake Ontario shorelines, could see rainfall approaching Environment Canada’s rainfall warning criterion of 50 mm within 24 hours.
The storm will also bring strong and gusty southwesterly winds over Southwestern Ontario. Wind gusts to 70 km/h are likely, with even stronger winds possible near the eastern ends of Lake Erie and Lake Ontario.