You're a long way from home then??
I had a couple of narrow escapes on ride home from barbers a bit earlier.......... 20mm road tyres aren't that good on compacted snow, especially when the back one's fairly well 'squared off' with mileage!
Hitting the raised white lines is a bit interesting to say the least!?!?
(20s' are all I can get on that frame, & still use mudguards)