Lightning Safety

Each year lightning kills approximately 10 Canadians and injures approximately 100 to 150 others. So, how do you keep yourself and your family safe when lightning strikes? Read the tips and information below and stay safe!

The first and most important thing to remember is that if you can hear thunder, you are within striking distance of lightning. Take shelter immediately, preferably in a house or all-metal automobile (not convertible top). If caught outside far from a safe shelter, stay away from tall objects, such as trees, poles, wires and fences. Take shelter in a low lying area.

Once indoors, stay away from electrical appliances and equipment, doors, windows, fireplaces, and anything else that will conduct electricity, such as sinks, tubs and showers. Avoid using a telephone that is connected to a landline.

If you are in your car during lightning, do not park under tall objects that could topple, and do not get out if there are downed power lines nearby. If you are caught outside, don’t stand near tall objects or anything made of metal, and avoid open water.

If caught on the water in a small boat with no cabin during thunder and lightning, quickly get to shore. Boats with cabins offer a safer environment, but it’s still not ideal.

Remember, there is no safe place outdoors during a thunderstorm. Once in a safe location, remain there for 30 minutes after the last rumble of thunder is heard before resuming your outdoor activities.

People who have been struck by lightning do not carry an electrical charge and can be safely handled, but victims may be suffering from burns or shock and should receive medical attention immediately. If you come across someone who has been struck, call for medical assistance immediately and, if breathing has stopped, administer mouth-to-mouth or cardio-pulmonary resuscitation (CPR).

Additional precautions to take during a lightning storm


If caught outdoors:

Avoid putting yourself above the surrounding landscape. Seek shelter in low-lying areas such as valleys, ditches and depressions but be aware of flooding.
Stay away from water. Don't go boating or swimming if a storm threatens, and get to land as quickly as possible if you are already on the water. Lightning can strike the water and travel a substantial distance from its point of contact.
Stay away from objects that conduct electricity, such as tractors, golf carts, golf clubs, metal fences, motorcycles, lawnmowers and bicycles.
Avoid being the highest point in an open area. Swinging a golf club, or holding an umbrella or fishing rod can make you the tallest object and a target for lightning.
You are safe inside a car during lightning, but be aware of downed power lines which may be touching your car. You are safe inside the car, but you may receive a shock if you step outside.
In a forest, seek shelter in a low-lying area under a thick growth of small trees or bushes.
Keep alert for flash floods, sometimes caused by heavy rainfall, if seeking shelter in a ditch or low-lying area.

Indoor Precautions:

Before the storm hits, disconnect electrical appliances including radios and television sets. Do not touch them during the storm.
Don't go outside unless absolutely necessary.
Keep as many walls as possible between you and the outside.
Don't handle electrical equipment or telephones. The electrical current from the lightning strike will travel through wires and cords and if you are directly connected with them, you could be struck. Use battery operated appliances only. Cordless telephones are safe however you could receive a very loud noise on the phone which may seem like a shock. This would be consistent with the house or somewhere nearby being struck by lightning.

Information on this page was a compilation of various sources mentioned below.

Recent Updates in Lightning Safety by William P. Roeder
Canada National Weather Service
Environment Canada