Tornadoes are nature's most violent storms and can occur with very little warning. Pennsylvania is not located in "Tornado Alley," however that does not mean tornadoes don't occur here. In fact, every U.S. state is at risk.
Tornadoes generally occur on the trailing edge of a thunderstorm. It is not uncommon to see clear, sunlit skies behind a tornado. Other environmental signs of a developing tornado may include:
- A dark or green-colored sky
- A large, dark, low-lying cloud
- Large hail
- A loud roar that sounds like a freight train
If you notice these conditions, take cover immediately and stay updated by listening to local TV or radio station reports.
Go to the innermost part of the building, away from windows and glass.
Close all doors; crouch near the floor or under a sturdy object and cover your head.
If outside, lie flat in the nearest ditch or another low area and cover your head.
Tornado Warning App
Go one step further to prepare by downloading the free Tornado Warning App from the American Red Cross. This app includes simple step-by-step instructions and warning features in the event of a tornado. The app is able to operate without cell phone or internet connectivity. Learn more.