Reply To: URGENT Hurricane Irma: What happens if your window breaks?

The problem with open windows/doors isn’t really the wind blowing in the house, it’s the pressure differential created by the wind going over your roof and around the corners of your home. If your door is open the incoming air also creates high pressure inside that can tear the roof off. Once the roof is gone, the walls are not as structurally sound because they are now only attached on 3 sides instead of 4, so they can more easily collapse, as well. That’s why homes designed for high velocity hurricane zones should have doors that open out from the structure. Good luck and good Shabbos!