Lightning Safety in a Car: What Makes a Vehicle Safer
A fully enclosed hard-topped metal vehicle with closed windows can provide useful lightning shelter because current travels mainly through its outer metal shell. Tires are not the protection; avoid metal contact, remain inside, and wait 30 minutes after the last thunder.
Timeline
- At the first thunder or flash: Move immediately to a substantial building or, if none is available, a fully enclosed hard-topped metal vehicle.
- While sheltering in the vehicle: Close windows, keep fully inside, avoid metal and connected equipment, and monitor weather without leaving the vehicle.
- After the last thunder: Remain in shelter for at least 30 minutes before resuming outdoor activity, then inspect a struck vehicle before driving.
A substantial enclosed building is the preferred lightning shelter. When one is not available, the National Weather Service identifies a fully enclosed, hard-topped metal vehicle with its windows closed as a safer alternative. Protection comes mainly from the conductive outer shell carrying current around the occupants, not from rubber tires. Enter at the first thunder or visible lightning; waiting for rain to begin is unsafe because lightning can strike away from the storm's heaviest rain. [1][2][3]
Keep the windows up, doors closed and every person fully inside. Avoid touching metal connected to the vehicle's exterior, including door frames, handles, radio equipment or exposed hardware. Keep hands in the lap when practical and avoid using plugged-in or wired accessories. A mobile phone that is not physically connected to the vehicle can be used to receive emergency information, but attention should remain on immediate weather and roadway hazards. [1][2][4]
Not every vehicle offers the same protection. Convertibles, open cabs, golf carts, motorcycles, bicycles and soft-top or open vehicles do not provide the enclosing metal shell described by NWS guidance. A fiberglass-bodied vehicle also should not be assumed equivalent without authoritative manufacturer or safety guidance. If already in an unsuitable vehicle, reach a substantial enclosed building when that can be done before the storm arrives; never shelter under a tree, pavilion, carport or open garage. [2][3][4]
If driving conditions deteriorate, balance lightning shelter with traffic, wind, hail and flood hazards. Slow safely and, when needed, pull completely off the traveled lane in a legal location away from trees, power lines and rising water. Use hazard lights as conditions require. Do not stop beneath an overpass or drive through floodwater. Remaining inside a suitable vehicle may reduce lightning exposure, but it does not protect against a falling tree, moving water, tornado or collision. [1][2]
A lightning strike can damage the vehicle even when occupants are protected. NWS reports possible damage to antennas, electronics, rear-window defroster wiring and tires, and a strike can leave a vehicle inoperable or start a fire. If there is smoke, fire, shattered glass or another immediate danger, call emergency services and follow their instructions. After the storm, do not continue driving a struck vehicle until its tires, electrical systems and other damage have been assessed safely. [1]
Remain sheltered for at least 30 minutes after the last thunder. Do not step out during a temporary lull or because rain has stopped. Use official alerts and radar for context, while recognizing that thunder itself means the area remains within striking range. Plan outdoor events and travel routes around accessible buildings or suitable vehicles so everyone can reach protection quickly; a vehicle is a backup shelter, not a reason to stay outside longer during an approaching storm. [2][3][4]
If lightning strikes a person, it is safe to touch them because they do not retain an electrical charge. Call emergency services immediately, move the victim only when necessary for safety and begin CPR or rescue breathing according to dispatcher instructions and current training when needed. The practical vehicle rule is simple: choose a fully enclosed metal-topped vehicle, close it, avoid conductive contact, remain until 30 minutes after the last thunder and treat any strike damage or injury as an emergency. [2][3]
Sources
- National Weather Service — Lightning and Cars
- National Weather Service — Lightning Safety Social Media Resources
- CDC — Lightning Safety Guidelines
- National Weather Service — Weather Spotter Safety First