Warm weather usually means fun in the sun, but summer heat also can bring severe weather.

Threatening thunderstorms often loom large on summer afternoons so it’s important to be prepared for downpours and accompanying lightning, which can strike outdoors or indoors. Consider the following suggestions when planning both outdoor and indoor events this summer to reduce the risk of a lightning strike.

  • Watch the weather. Pay attention to your local weather forecast before participating in outdoor activities. If there’s a chance of thunderstorms, consider rescheduling or moving events indoors. If that’s not possible, have an emergency plan in place in case a severe storm rolls in and designate a sufficient nearby structure as an emergency shelter.
  • Stay inside. If severe thunderstorms are imminent, go indoors and wait until they pass. Safe, enclosed shelters include homes, schools, offices, shopping malls and vehicles with hard tops and closed windows. Open structures and spaces do not provide adequate protection.
  • Duck and crouch. If you’re caught outside during a severe storm, it’s important to crouch low on the ground, tuck your head and cover your ears to help protect yourself from harm. Do not lie down; lightning strikes can produce extremely strong electrical currents that run along the top of the ground, and laying horizontally increases electrocution risk.
  • Turn off faucets. During a thunderstorm, lightning can sometimes be conducted through the plumbing. Avoid any type of contact with running water, including bathing, showering, and washing your hands, dishes, or clothes.
  • Turn off electronics. All electrical appliances—televisions, computers, laptops, gaming systems, stoves, and more—that are plugged into an electrical outlet could carry a current from a lightning strike. Surge protectors will reduce the risk of damaging electronics.
  • Stay away from windows. Not only is lightning a threat, but high winds and hail create flying debris that could be harmful during a thunderstorm. Close all windows and doors and keep away from them.