Costly Hail Storms in the U.S. Hail No. By: Sarah Arnold Criminology and Political Science College of Arts and Sciences. Hail Formation. More Updraft More Rings Larger Hailstones. Types of Hail Damage. Crop Damage. Automobile Damage. Building Damage.
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Costly Hail Storms in the U.S. Hail No By: Sarah Arnold Criminology and Political Science College of Arts and Sciences
Hail Formation More Updraft More Rings Larger Hailstones
Types of Hail Damage Crop Damage Automobile Damage Building Damage
Factors that Affect Hail Damage • Hail Characteristics • the size of hailstones • number of hailstones that fall per unit area • strength of winds during a hail fall • Target Characteristics • Crop Characteristics • Property Characteristics
Property Damage by Hail Size • Quarter-size (1 inch) • Damage to shingles • Golf ball (1.75 inches) • Dents on Car • Baseball (2.75 inches) • Windshields smashed • Softball (4.5 inches) • Holes in roofs
Cold Mountain Updrafts Hail Alley Dry Warm Air Moist Warm Air
Dallas Hailstorm:3rd Costliest Hailstorm in U.S. History • 5 May, 1995 • Hail up to softball size • 70 mph winds • Flash flooding
Total Cost of Damage: $1.1 billion
St. Louis Hailstorm:2ndcostliest Hail storm in U.S. History • April 28, 2012 • 2 waves of supercell thunderstorms • Hail up to softball size • 50-60 mph winds
Total Cost of Damage: $1.6 billion
Kansas City Hail Storm:Costliest Hail Storm in U.S. History • April 10, 2001 • Long-lived high-precipitation supercell thunderstorm • Winds over 70 mph • 9 weak tornados
Total Cost of Damage: $1.9 billion
Main Points • Hail Formation • Types of Hail Damage • Crop Damage, Automobile Damage, Building Damage • Trends • Hail occurs most often in the Summer • Hail occurs most often in the great plains • The number of severe hail storms annually is increasing • Costliest Hail Storms in U.S. History • $1.1 billion: Dallas 1995 • $1.6 billion: St. Louis 2012 • $1.9 billion: Kansas City 2001
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