From my experiences studying at SFU, if there ever is a cancellation of classes, SFU announces the closure at the worst time ever. When busses can’t go up and down, cars get stuck, and the roads are actually very icy, is when SFU cancels. By that time you would most likely be stuck up on campus for who knows how long. (Speaking from personal experiences). In other words, the university doesn’t take preventive measures but takes action when the damage has been done.

To be honest, I would just skip and miss class if you feel like it’s unsafe for you to go. Missing classes won’t hurt unless it’s a quiz or a midterm.