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Are you prepared?

Severe Thunderstorms

Every thunderstorm produces lightning, which is extremely dangerous. Though lightning fatalities have decreased over the past 30 years, lightning continues to be one of the top three storm-related killers in the United States. Although most lightning victims survive, people struck by lightning often report a variety of long-term, debilitating symptoms.

Other associated dangers of thunderstorms include tornadoes, strong winds, hail and flash flooding. Flash flooding is responsible for more fatalities—more than 140 every year—than any other thunderstorm-associated hazard. Dry thunderstorms that do not produce rain that reaches the ground are most prevalent in the western United States. Falling raindrops evaporate, but lightning can still reach the ground and can start wildfires.


Before a Thunderstorm and Lightning

To prepare for a thunderstorm, you should do the following:

  • Build an emergency kit and make a family communications plan.

  • Remove dead or rotting trees and branches that could fall and cause injury or damage during a severe thunderstorm

  • Postpone outdoor activities

  • Remember the 30/30 Lightning Safety Rule: Go indoors if, after seeing lightning, you cannot count to 30 before hearing thunder. Stay indoors for 30 minutes after hearing the last clap of thunder.

  •  Secure outdoor objects that could blow away or cause damage.

  • Get inside a home, building or hard top automobile (not a convertible). Although you may be injured if lightning strikes your car, you are much safer inside a vehicle than outside.

  •  Remember, rubber-soled shoes and rubber tires provide NO protection from lightning. However, the steel frame of a hard-topped vehicle provides increased protection if you are not touching metal.

  •  Shutter windows and secure outside doors. If shutters are not available, close window blinds, shades     or curtains.

  •  Unplug any electronic equipment before the storm arrives.


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Facts about Lightning

  •  Lightning’s unpredictability increases the risk to individuals and property.

  • Lightning often strikes outside of heavy rain and may occur as far as 10 miles away from any rainfall.

  •  “Heat lightning” is actually lightning from a thunderstorm too far away for thunder to be heard. However, the storm may be moving in your direction.

  • Most lightning deaths and injuries occur when people are caught outdoors in the summer months during the afternoon and evening.

  •  Your chances of being struck by lightning are estimated to be 1 in 600,000, but could be reduced even further by following safety precautions.

  • Lightning strike victims carry no electrical charge and should be attended to immediately.