There is a web page that shows where the plows of the companies hired to maintain provincial highways are working – in real time. This means you can find and follow a plow when conditions are really bad.
The site also aggregates information from the Twitter feeds of the OPP and the MTO, weather radar, MTO cameras(i.e. Hwy 21 and the Dashwood Road) and Environment Canada Alerts for the displayed area. It would be nice if it also showed or linked to the MTO’s Road Conditions Report – Southwest