It's not entirely within the control of the landlord.
A little over 2 years ago, we had a massive snowstorm in our area; a tree was uprooted and fell onto the house in such a way that the front door was entirely blocked. The only way to enter or exit the house was to walk around the house (there is no paved path) and enter or exit through the kitchen slider. We were classified as an emergency because of the door being blocked. But so many other people had trees down that between getting the insurance company to inspect (which had to be done before the tree could come down) and getting onto the contractor's schedule, that EVEN CLASSIFIED AS AN EMERGENCY and being put at the top of the list because of that, it was STILL a month before that tree came down.
Now granted, this is July, not February; you don't have to deal with nearly three feet of snow getting in the way of the operation. But I can tell you what's NOT reasonable, and that's expecting that a tree that came down Sunday would be gone by Tuesday.

