Transcript Blizzards

Blizzards
Cera Thomason, Rachel Trieschmann, Brian Hebbeln
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A mass of polar air meets a mass of warm air.
Polar air pushes warm air up and settles in
the atmosphere where water vapor forms
snow clouds.
Winds and low temperatures combine with
the snow to create a blizzard.
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Measured by: wind speed, barometric
pressure, inches
Conditions of a North America blizzard:
◦ At least 25 mph wind speeds
◦ Heavy snow fall and low visibility
◦ Last at least 3 hours
Where: Northeastern U.S., Canada, Northern
Europe, and Northern Asia
Warning Signs: Strong winds, blinding winddriven snow and dangerous wind chills are
expected. Best to stay updated with news
reports.
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January 12- Blizzards hit
Dakota Territory, the states
of Montana, Minnesota,
Nebraska, Kansas and Texas.
 235 dead, mostly children on
their way home from school
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March 11- “The Great
Blizzard of ‘88” begins
along the eastern
seaboard of the U.S.,
shutting down commerce
and killing more than 400.
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Seek shelter immediately
Keep emergency supplies inside trunk and keep
gas tank full for emergency use.
If possible, let someone know your destination,
route and expected arrival.
Cell phones are great, but keep a limited use to
avoid overloading the cellular system.
◦ Approximately:
 70% of deaths are due to automobile accidents
 25% are caught out in the storm
 20% are at home
The End
Rachel Trieschmann, Cera Thomason, Brian Hebbeln