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Why Worry About Thunderstorms?

  • Causes an average of 55-60 fatalities and 400 injuries each year
  • Occurs with all thunderstorms
  • Costs more than $1 billion in insured losses each year
  • There is no safe place outdoors when a thunderstorm is nearby

  • Causes an average of 60-65 fatalities and 1,500 injuries each year
  • Can produce wind speeds in excess of 200 mph
  • Can be 1 mile wide and stay on the ground over 50 miles
  • Can occur at any time of day, any day of the year

Straight-line Winds...
  • Can exceed 125 mph
  • Can cause destruction equal to a tornado
  • Are extremely dangerous to aviation

Flash Floods and Floods...
  • Are the #1 cause of deaths associated with thunderstorms, more than 90 fatalities each year
  • More than half of all flood-related drownings occur when a vehicle is driven into hazardous flood water. "Turn Around, Don't Drown."
  • 6 inches of fast-moving water can knock you off of your feet
  • 2 feet of rushing water can carry away most vehicles, including SUVs and pickups

  • Can be larger than a softball (5 inches in diameter)
  • Causes more than $1 billion in crop and property damage each year
  • Hail is larger than sleet and forms only in thunderstorms and can fall at speeds faster than 100 mph



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