Cold storage like that is pretty common in the North (as are raccoon proof locks ;) ), and many people run outdoor woodstoves which require going outside to keep them running at least once every two days or so.
Snowstorms are rare enough, even in Northern Canada that you can usually wait it out. If it lasts for days then that's a different story, but I only recall one multi-day blizzard over the five years that I was there.
How often are people going in their freezer??? I barely use mine. You grab something, cook up a week's worth of food. If you run out during a snowstorm, you just cook pantry food.
