How many volts is the average lightning strike?

The average lightning strike carries a potential of about 100 million volts, although the voltage can range from as low as 10 million volts to as high as one billion volts. The exact voltage of a lightning strike depends on various factors such as the length and intensity of the discharge, the electric field in the atmosphere, and the distance between the cloud and the ground. The current in a typical lightning bolt can be as high as 30,000 amperes, and the temperature of the lightning channel can reach up to 30,000 degrees Celsius (54,000 degrees Fahrenheit), making lightning a powerful and dangerous natural phenomenon.

​What happens when lightning hits my house?

When lightning strikes a house, it can cause various types of damage depending on the strength of the strike and the design and construction of the building. Some possible effects of a lightning strike on a house include:

1. Fire: Lightning can cause fires by igniting flammable materials such as wood, gas, and insulation. A lightning strike can start a fire in the attic, roof, walls, or other parts of the house.
   
2. Power surge: Lightning can cause power surges that can damage or destroy electrical appliances, electronics, and other devices that are plugged in or connected to the house's electrical system.
   
3. Structural damage: A lightning strike can cause structural damage to the house by cracking or shattering masonry, concrete, or bricks. The force of the strike can also damage roof tiles, gutters, and chimney caps.
   
4. Shock waves: Lightning generates shock waves that can cause damage to the walls, ceilings, and windows of a house. These shock waves can also knock down trees, poles, and other structures in the vicinity.
   
5. Electromagnetic interference: Lightning can create electromagnetic fields that can interfere with electronic devices such as televisions, radios, and telephones. This interference can cause static, noise, or other disruptions to the device's normal operation.
   

If you suspect that your house has been struck by lightning, it is important to call the fire department immediately to ensure that there is no risk of fire or other hazards. It is also advisable to have a professional Electrician inspect your house for any damage and to take steps to protect your electrical and electronic devices from power surges and other effects of the strike.