Sandy is expected to make an unprecedented hook into the northeastern U.S. coast -- but the location of that hook will have a lot to do with a disturbance on the coast of British Columbia.
A low pressure system that's causing rain on the west coast is digging down and tracking towards the U.S.
It will eventually intersect with Sandy -- and that will determine when and where the storm makes its left-hand turn.
Computer models are starting to cluster around the storm's possible outcome, but there are still a range of possible scenarios.
There are even a few models that think the storm could track further north and make contact with Nova Scotia.
Whatever the case, this is going to be a big system, which means Canada will feel some of the Sandy's impact.
By late Monday and early Tuesday, southern Ontario, Quebec and the Maritimes could see heavy rain and strong winds.
While the storm will be most severe in the U.S., Sandy will definitely be something to keep an eye on in the days to come.
For live updates and analysis tune to The Weather Network on TV and track Sandy’s progress here on the web.