After sunset, air near the earth's surface begins to cool, restoring atmospheric stability and reducing the threat of tornado occurrence. Any time unseasonably warm and humid conditions exist, the possibility of tornadoes increases. Monitoring television and radio weather bulletins and watching the sky for approaching thunderstorms are two ways to keep abreast of weather conditions. Tornadoes are classified based on a scale of comparative force. It should be emphasized that all tornadoes are potentially deadly, no matter what their category.
Tornadoes generally move from west to east, and most frequently travel southwest to northeast.
The exact path of any tornado is extremely unpredictable. Because of the diversity of their movement and the speeds at which they move, tornadoes demand alertness, especially after a warning has been issued for your area. Refrain from driving to locate family or friends. Make phone calls to notify those who may have missed the tornado warning broadcast, but keep an alert eye on the sky. Tornadoes often form near the area of strongest updraft, usually the southwest corner of a thunderstorm.