• Tune in to your radio to stay informed of approaching storms.
• If you see a tornado or hear a tornado warning, don't try to outrun it. View tornado driving safety tips.
• Turn on your headlights (low beams) and slow down. Many states require the use of headlights during rain.
• Allow extra distance for braking.
• Do not drive unless necessary.
• Pull safely onto the shoulder of the road away from any trees that could fall on the vehicle.
• Stay in the car and turn on the emergency flashers until the heavy rains subside.
• An automobile provides better insulation against lightning than being in the open.
• Avoid contact with any metal conducting surfaces either inside your car or outside.
• Avoid flooded roadways.
• Avoid downed power lines.
• Check your windshield wipers and tires regularly to insure that they are ready for severe weather.
• Approach intersections with caution
• Treat traffic lights at intersections as stop signs.
• How to deal with a hail storm.
• Visit our flood safety tips for how to deal with flooding.

Source: FEMA.gov