What to Do When a Thunderstorm Approaches Your Area
Stay tuned to your weather radio or local news station for the latest updates from the National Weather Service or go to the National Weather Service website.
Seek safe shelter when you first hear thunder, when you see dark threatening clouds developing overhead, or see lightning. Stay inside until 30 minutes after you last hear thunder or see lightning. Remember, lightning can strike more than 10 miles away from any rainfall.
"When thunder roars, go indoors!" When you hear thunder, run to the nearest large building or a fully enclosed vehicle (soft-topped convertibles are not safe). It is not safe anywhere outside.
If you are boating or swimming, get to land and seek shelter immediately.
Telephone lines and metal pipes can conduct electricity. Any item plugged into an electrical outlet may cause a hazard during a tornado or thunderstorm. Do not use corded (plug-in) telephones except in an emergency.