The force of a tornado can rip through a structure, whether windows are open or not. Opening windows could actually make the situation worse. A Tornado Tornadoes appear suddenly and strike randomly. Your best defense is to be alert during times of severe weather. However, tornadoes can form any time of the year.
Tornadoes can and do occur in every state in the country.
Tornadoes usually accompany thunderstorms, but not always. A tornado may be in close proximity of sunshine, or it may be totally enshrouded in heavy rain. Large hail and tornadoes can be produced by the same thunderstorm. However, many hailstorms are not accompanied by tornadoes and vice versa. While many tornadoes move from a southwest direction, they can also travel from other directions such as west or northwest.