Tomorrow, Sunday or late next week. Would be a good day to check and see if your bees are alive.
Look to see if the bees are doing cleansing flights. There will be dead bees in the snow outside the hive. This is normal.
No bees flying? Are they at the top hole entrance? Nothing yet? Rap on the side of the hive any buzzing? Nothing yet?
Sometimes if the hive was very heavy with honey the bees could still be down deep in the hive. Put a veil on and open the top covers and look down deep between the frames. Do you see the bees moving down deep in the hive?
If the colony is dead close it up and order some packages. If it is alive, great news.
This is a video I did a couple years ago. Checking for hive, alive or dead and checking on food stores.