Lightning can strike a car: While the metal frame of a car can provide some protection from lightning strikes, it's not foolproof. Lightning can still strike a car, and if it does, the occupants could be injured or killed.
Potential for electrical shock: Even if lightning doesn't directly hit the car, the electrical surge can travel through the ground and into the car, potentially causing electrical shock to the occupants.
Danger of touching metal: The metal frame of the car can become electrified during a lightning strike. If you touch the metal parts of the car, you could be at risk of electrical shock.
Risk of flooding: Thunderstorms can bring heavy rain, which can lead to flooding. If your car is parked in a low-lying area or a flood-prone zone, it could become submerged in water, putting the occupants in danger.
Visibility issues: Heavy rain and strong winds associated with thunderstorms can significantly reduce visibility. Driving in these conditions can be hazardous and increase the risk of accidents.
Flooded roads can also lead to hydroplaning. Hydroplaning is the loss of traction that occurs when a vehicle's tires lose contact with the road and instead glide on top of a thin layer of water. Hydroplaning causes vehicles to lose control, which can lead to accidents.
For these reasons, it's important to avoid staying in a car during a thunderstorm. If you're caught in a thunderstorm while driving, pull over to the side of the road in a safe location and stay inside the car until the storm passes. If you're at home or work, stay indoors and follow any safety instructions provided by local authorities.