The American Red Cross offers these suggestions for what to do during and after a severe thunderstorm.

When a storm approaches:

-- Find shelter in a building or car. Keep car windows closed and avoid convertibles.

-- Telephone lines and metal pipes can conduct electricity. Unplug appliances. Avoid using the phone or any electrical appliances. (Leaving electric lights on, however, does not increase the chances of your home being struck by lightning.)

-- Avoid taking a bath or shower or running water for any other purpose.

-- Turn off the air conditioner. Power surges can overload the compressor, resulting in costly repairs.

-- Draw blinds and shades over windows. If windows break, the shades will prevent glass from shattering into the room.

If caught outside:

-- If you are in the woods, take shelter under the shorter trees.

-- If you are boating or swimming, get to land and find shelter immediately.

Protecting Yourself Outside:

-- Go to a low-lying, open place away from trees, poles or metal objects. Make sure the place you pick is not subject to flooding.

-- Be a very small target. Squat low to the ground, place your hands on your knees with your head between them.

After the Storm passes:

-- Stay away from storm-damaged areas.

-- Listen to the radio for information and instructions.