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Lightning, heavy or torrential rain and snowstorm


If you are indoors

  • Stay well away from windows doors, chimneys, radiators, electrical appliances, metal pipes, telephone, fireplaces and anything that could conduct electricity, such as sinks, bathtubs and showers.
  • Before a thunderstorm, unplug radios and televisions sets and any computers.
  • Do not go outside to take in the laundry from the clothesline; it can conduct electricity.
  • Avoid using telephones that have a landline connection.

If you are outdoors

  • Take shelter immediately in a building or a low-lying piece of ground. NEVER shelter under a tree, and do not cycle or travel by motorcycle or golf cart.
  • Avoid holding any object that conducts electricity, such as a shovel or golf club.
  • Get to shore if you are in the water or in a boat.
  • If you are in a car, stay inside it, but distance yourself from any trees. Wait at least 30 minutes after the last sound of thunder before exiting the vehicle.
  • If you are without shelter, do not lie down. Squat down and tuck your head down.
  • In a forest, take shelter under dense vegetation made up of small trees or bushes.
  • Be aware of the flash floods sometimes caused by heavy rains when you try to take shelter in a ditch or on low-lying terrain.

Persons hit by lightning do not carry an electrical charge; they can be touched without danger. However, victims may suffer from burns and shock and must receive medical care immediately. If you happen upon a person who has been struck by lightning, request medical assistance immediately and, if the person has stopped breathing, administer mouth-to-mouth or cardio-pulmonary resuscitation (CPR). 

To consult maps about the most recent lightning activity, go to the website Canadian Lightning Danger Map - Canada.

Torrential rain

  • Avoid driving on flooded roads and passing under road bridges.


  • If you stop your car, stay inside.
  • Keep your gas tank full and have a reserve supply of window-washing fluid and antifreeze.


Environnement Canada

Severe storm