Southern Ontario including all of the Greater Toronto Area will feel the brunt of Hurricane Sandy and its collision with another storm system starting Monday night.

Just before 5 a.m. Environment Canada posted a wind warning that stretches from Windsor to Cornall and north to just south of Barrie. The warning is in effect starting Monday night.

Generally most areas can expect north winds of 40 to 60-kilometres an hour on Monday.   60 to 90 kilometres an hour and that's when damage can be expected, downed power lines, downed trees and damage to buildings. There are two parts of the province where the gusts could hit 100 kilometers an hour, being Niagara Region and Sarnia.

The size of the storm has pretty well crippled air travel throughout most of the northeastern U.S.   It's affecting thousands of flights including hundreds in and out of Pearson International. Over 400 flights are cancelled between Monday and Tuesday.
Many of those are to and from cities on the east coast, like Washington D.C., New York, Connecticut and Charlotte.

To see a list of cancellations at Pearson International, click here.

If you had a flight booked with Porter Airlines, you should check it's status, because all flights to and from Newark, Washington and Boston have been cancelled, and the company warns that the list of cancellations may grow.

To check your flight status with Porter Airlines, click here.

(Some files by D. Agar)