Another bout of rain also appears on the radar from Friday morning meaning road users could be at risk for the rest of the week.
The Met Office said: “If you are caught out in thunder and lightning it is advised that you wind up the windows and stay inside your car.
“This is because in the vast majority of cars with a metal roof and frame, the frame will act as a conductive Faraday cage, passing the current around the passengers inside and on to the ground.”
Former Top Gear host Richard Hammond put the concept to the test back in 2004 as he sat in a Volkswagen Golf while it was hit by lightning.
The host of the iconic TV show admitted he could feel his hands tingling but was otherwise absolutely fine.
The vehicle was also left in good condition despite the 80,000 volts of electricity with the Golf even driven away by Richard moments later.
Specialists at the British Red Cross have also pointed out the benefits of camping out in a car if the weather turns.
They explained: “If you hear the rumble of thunder, you should immediately seek shelter.
“Hearing thunder is a warning that you are within striking distance of the storm so head to any enclosed building or a car with a hard-topped metal roof and windows wound up will offer protection.
“If there’s a thunderstorm warning in place, then make sure to plan your day around it. Don’t plan outdoor events and avoid activities like fishing or golf. If you’re traveling somewhere, delay the journey.”
