A snowfall warning has been issued for Parry Sound and Muskoka. Environment Canada says 15 to 20cm of the white stuff is expected to come down across the region starting tonight and continuing through until tomorrow night. The snow is expected to slowly spread westward across the regions tonight then become heavy at times and continue through tomorrow before starting to slowly ease off tomorrow night. Driving conditions will quickly deteriorate as the snow arrives tonight and this snow storm is expected to have a significant impact on the commute to and from work or school tomorrow.