A Tornado — Should You Close Interior Doors During

The persistence of the "open doors" advice is a case study in scientific lag.

— you should close all interior doors (and open only those leading to a designated shelter space, if necessary). Closing interior doors helps compartmentalize the house, reducing the risk of wind and debris spreading from room to room. However, the most critical action is getting to a safe, windowless interior space on the lowest floor (basement, bathroom, closet). should you close interior doors during a tornado

Closing interior doors acts as a second line of defense if your home’s outer shell—such as a window or garage door—is breached. Tornado Safety Rules - National Weather Service The persistence of the "open doors" advice is

Structural engineers have proven that the pressure differential inside vs. outside a home during a tornado is negligible—roughly equivalent to the pressure change experienced when ascending a few floors in an elevator. Homes do not explode due to air pressure. However, the most critical action is getting to

Wasting time running through the house to open doors or windows costs precious minutes that should be spent sheltering.