HAIL STORMS

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HAIL STORMS
HAIL STORMS
By Danielle Frost and Rachel Schwimmer
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Hail Vocab Before We Start

• Hailstorm storm consisting of hail
• Hail type of precipitation, balls of ice, type
  of snow
• Hailstone individual falling hail

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How are hailstorms produced?

• From thunderstorms
• Stronger updraft larger hail
• Go through areas of different temp. and humidity
  different types of ice build onto them
• Stones grow in same cloud

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Where and When?

• Common in mid-latitudes
• Can happen anywhere in U.S. ? mostly SE. Wyoming,
  W. Nebraska, E. Colorado
• Around the world Argentina, N. Italy, Kenya, S.
  Africa, Caucasus Region
• Localized events
• Spring, summer, fall months

This map shows the number of days hail is
observed. There is not a lot near Florida, but
there is in the Great Plains area.
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Hailstone Sizes

• Mostly smaller than an inch
• Normally pea sized
• Risky when it becomes golf ball and orange size
• Largest one 2.25 lbs. in Bangladesh 1986

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What damage can they cause?

• Damage greater with stronger winds
• Severe thunderstorm warning ? you, homes,
  property, pets
• Vehicles, windows, roofs, dent airplanes

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How do they relate to severe weather?

• Hailstones fall at at least 22 mph, can fall to
  100 mph
• Hail most destructive form of precipitation
• 1888 storm killed 250 people

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Marble Question!

• How does the layering affect of a hailstone
  happen?
• You have 40 seconds!

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The End

• Thank you for listening!