The long-standing belief that opening windows "equalizes pressure" and prevents a house from exploding is a dangerous myth. In reality, taking the time to open windows puts you at extreme risk of being hit by flying glass and debris—the primary cause of tornado-related injuries. Why the "Pressure" Rule is a Myth
The primary cause of home destruction during a tornado is high wind speeds and flying debris, not air pressure. Opening a window allows these violent winds to enter your home directly, where they can lift roofs from the inside and cause walls to collapse. should you open a window during a tornado
If a Tornado Warning is issued for your area, stop what you are doing and seek shelter immediately: Tornado Safety - National Weather Service Opening a window allows these violent winds to
Tornado Safety Post: Should You Open Your Windows? not air pressure.