So you're sitting there, wind howling outside, and that old piece of advice pops into your head — "crack a window to let the pressure out." Makes sense on the surface, right? Except it's completely wrong. Like, dangerously wrong. Modern meteorologists and building engineers are pretty clear on this: opening windows during a hurricane or severe thunderstorm is asking for trouble. This piece digs into why that old advice doesn't hold up, what actually happens to your house, and what you should be doing instead. Here's the thing about your house — it's designed to be pretty airtight these days. When wind smacks into one side, you get high pressure on that windward side and low pressure on the opposite side and roof. Crack open a window on the windward side and all that wind rushes in. Now you've got internal pressure building up, working together with the wind outside to possibly lift your roof right off. Or blow out your walls. Open a window on the other side and it sucks air out, creating negative pressure that can do the same thing. Lose-lose, honestly. Yeah, that whole "open windows so your house doesn't explode" thing? Total myth. Probably came from some early storm safety pamphlets back when buildings leaked air like sieves. Maybe it made some kind of theoretical sense way back when. But modern construction? Different ballgame. Houses are sealed tight, built with stronger materials. The real threat during a wind storm isn't pressure — it's debris flying at your house at 100 mph. A chunk of wood or metal can shatter a closed window. If it's already open? That debris flies right in, maybe hits someone, definitely destroys your living room. Look, instead of messing with windows, you've got actual useful stuff to do. First thing — close everything. Lock them tight. Got storm shutters? Deploy them. Don't have any? Impact-resistant windows are worth considering, or just grab some plywood for the big ones. Move your valuable stuff away from windows. And figure out where you're hiding when things get bad — basement, interior closet, somewhere without windows. That's your safe room. Nope. Not even a little. Tornado winds are so insane that trying to equalize pressure is pointless. All you're doing is giving the tornado an open door. Seriously, just get to your basement or interior room immediately. Still bad. Opening a leeward window might seem smart — let air out, right? But it creates negative pressure that yanks on your roof and walls. Just as damaging as positive pressure. Keep everything shut. Don't. Even a tiny gap lets wind in and messes with internal pressure. Plus debris can fit through that crack. Or wind can rip the window right off its frame. Keep them closed, period. Air it out early, before things get hairy. Once the storm's on its way, shut everything tight. Use fans, crank the AC. Safety beats comfort here — a stuffy house beats a destroyed one.Should you open windows in a wind storm
Why opening windows is dangerous during a wind storm
According to the Federal Alliance for Safe Homes (FLASH) and the Insurance Institute for Business & Home Safety (IBHS), opening windows does not equalize pressure in a way that protects a structure. Instead, it introduces a pathway for wind and debris to enter, causing internal damage and potentially leading to catastrophic failure.
What about the old advice to open windows?
What should you do instead of opening windows?
Checklist: Preparing for a wind storm
Data: Wind damage and building pressure
Scenario
Internal Pressure
Risk of Roof Uplift
Risk of Debris Entry
Windows closed and secured
Stable, low
Low (if building is well-sealed)
Low (unless window is broken)
Window open on windward side
High positive pressure
High
Very high
Window open on leeward side
Low negative pressure
High
Moderate (debris can be sucked in)
Window broken by debris
Variable, rapid change
Moderate to High
High
Frequently Asked Questions
Does opening windows during a tornado help?
What about opening windows on the downwind side only?
Can I open windows just a crack to relieve pressure?
What if my house feels stuffy before the storm?
Expert insight
Dr. Timothy Reinhold, former Chief Engineer at IBHS, stated: "The idea that you should open windows to equalize pressure is one of the most persistent myths in storm safety. Modern building science has clearly shown that opening windows increases the likelihood of structural failure. The best way to protect your home is to keep it closed tight."
Short Summary
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