By: Callie Tobin

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By Callie Tobin
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These are some pictures of hail laying on the
roads
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This is what Hail looks like
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What is Hail?

• Hail is precipitation that is formed when
  updrafts in thunderstorms carry raindrops upward
  into really cold areas of the atmosphere and
  freezes into ice. Hailstones grow by colliding
  with cold water drops. Thunderstorms that have a
  strong updraft keep lifting the hailstones up to
  the top of the cloud so they will keep on
  growing. The hail falls when the thunderstorm's
  updraft can no longer hold the weight of the ice.
  The stronger the updraft, the larger the
  hailstone can be.

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Size Chart (diameter)

• Pea 0.25
• Penny/dime 0.75
• Quarter 1.00
• Half dollar 1.25
• Golf ball 1.75
• Tennis ball 2.50
• Baseball 2.75
• Grapefruit 4.00

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Hail Damage
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How and Why Does Hail Form?
If you split hail in half there will be layers.
There can be up to 25 layers.
How fast is Hail?
Think of a baseball dropping from the sky at
30,000 ft. Imagine many baseballs, reaching
speeds of 120 mph, falling on and around you.
This is what a hail storm would be like.
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This is how Hail forms
The rain falls. Then there are large updrafts of
wind (red arrow). After it gets up into the cloud
it forms into hail and falls.
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This is what Hail looks Like
 Hail is formed in tremendously large
cumulonimbus clouds.
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This is what hail looks like the day after the
hail storm.
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The Largest Hailstone

• The largest hailstone discovered in the
  U.S. fell in Aurora, NE on June 22, 2003 with a
  diameter of 7 inches and a circumference of 1.75
  inches. Since it was not weighed the hailstone
  that fell on Coffeyville, KS in 1970 remains the
  largest on record at 5.7 inches and 1.67 pounds,
  with a circumference of 17.5 inches.

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The End !!!