Hail Storm

Kierra MLaShai S

Josephine O

Formation of hail storms

• Water droplets freeze into an ice nucleus

• The faster the updraft on the ice balls the bigger they grow

Cause of hail storm

• Raindrops lift up into the atmosphere during a thunderstorm super cooled by temperatures below freezing.

• The size of hail can be as small as a pea or as big as a grapefruit.

Conditionsof hail

Hailstorm very lightly

Hail balls as big as grapefruit

Temperature of hailstorms to occur

• Hail growth becomes invisibly small once the air temperature falls below -22 degrees Fahrenheit. The damage at a particular location depends on the frequency and severity intensity of hail fall.

Risks of hailstorms

• Nine people were killed do to a 20 minute hail storm in southern India causing devastating financial implications for residents.

Damages the roof and crops

History: FUN FACTS

• The deadliest hail storm of SAN MACROS, TEXAS was on April 21st, 2006. The average size of hail were not less than 10cm.

• ARUORA, NEBRASKA faced seven inches of hail size which was one of the largest hailstones recorded in history. 7inches in diameter and 18.75inches in circumference.

http://www.youtube.com/watch?v=Q4RszUIXXTA&safe=active

Types

• Hail sized varies as from .50inches to 4.50inches on average.

Quarter MarbleWalnut Grapefruit Softball