If we knew the answer to that, it wouldn't be so interesting! It's -2ºC at the airport, and the upper 850 temps won't fall below -6ºC - but as a couple of posts in the model thread have discussed the wet bulb temp in this cold front is marginal, but is better east compared to west. So make of that what you will - I'm not making a guess
I'll see if there's a forecaster about who can give a proper opinion.