Thunderstorms can be very dangerous because they produce lightning. If you hear thunder, then lightning is near. Be careful, especially if you are outdoors.

A Thunderstorm Watch means a thunderstorm might form. A Thunderstorm Warning means a thunderstorm is certain.

If you're outside...

• Watch the sky. Notice darkening skies, lightning, or increased wind. If you hear thunder, go to a safe place immediately. Don't wait for it to start raining, because lightning often comes before rain.
• The safest shelter is a sturdy building or a car. Avoid sheds, picnic areas, baseball dugouts and bleachers.
• If you can't find shelter, stay away from trees. A good rule of thumb is to keep twice as far away from a tree as it is tall. Crouch down in the open, with your feet together, and place your hands over your ears to protect your hearing.
• If you're with a group of people, stay about 15 feet from each other.
• Get out of the water — it conducts electricity. Don't swim, and don't even stand in a puddle.
• Don't touch metal. Stay away from clotheslines and fences. Drop your backpack, since most have metal parts.
• Wait at least 30 minutes after the last observed lightning strike or thunder before you start outdoor activity again.

If you're inside...

• Avoid water, since it conducts electricity. Don't shower, wash your hands, wash dishes or do laundry. (For once, you have a good excuse not to do those chores!)
• Don't use a corded telephone. Lightning can strike phone lines.
• Don't use electric equipment (such as a computer) during a storm.
• Stay away from windows and doors, and stay off porches.

If someone is struck by lighting, call 9-1-1 or send for help right away. A person who has been struck by lightning does not carry an electrical charge, so it is okay to touch them.