Environment Canada issues warning on ice storm heading for southern Ontario

Environment Canada issues warning on ice storm heading for southern Ontario

"Significant icing and gusty winds are expected", the weather service said.

Coupled with wind gusts up to 80 kilometres per hour, it's enough to knock out power and down trees, Environment Canada said.

As a moisture-laden low pressure system moves over the lower Great Lakes this weekend, brisk northeasterly winds will bring in cold Arctic air and force temperatures below freezing Saturday morning (April 14).

Freezing rain is also expected overnight into Sunday before changing back to heavy rain as temperatures rise above 0.

The freezing rain could cause ice accumulations of up to 20 mm in some places. "Several centimetres of ice pellets are likely during the day". Freezing rain may also become mixed with or turn into ice pellets.

Flooding may become a threat in some areas by Sunday evening. The freezing rain will change to over to rain Sunday evening.

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The rain isn't expected to end until Monday.

Sunday is when the forecast gets ominously terse: "Periods of snow or freezing rain".

App users: Maps show zones of rain, freezing rain and snow Saturday and Sunday.

If you experience an outage or see downed power wires, you can report it by calling 1-800-867-5222.

Due to the icy weather conditions, both the Peel District School Board and Dufferin Peel Catholic District School Board have cancelled permits and weekend programs, including global language programs, and continuing/adult education classes for both Saturday, April 14 and Sunday, April 15.

Hydro One says it has crews ready to respond to outages 24/7, and additional resources are on standby this weekend.