Ontario could see the worst of a mega-storm as it closes in on Canada.

Hurricane Sandy is expected to combine with a winter storm system & a blast of Arctic air to create what forecasters are calling a "Frankenstorm".

For Ontario, it could mean 50mm-100mm late Monday & early Tuesday, though experts are still fine tuning those rainfall predictions.

Forecasters also say winds could also whip into gusts of up 100 km/h by Monday night.

Many US states along the east coast have declared states of emergency.  The Canadian Hurricane Centre says damage here won't be anything like what Americans will see.

The storm is comparable in size to the so-called "Perfect Storm" of 1991, which remained off the coast of New England, pushing huge waves & causing $200-million in damage.