Docstoc

Blizzards and Extreme Heat and Cold

Document Sample
Blizzards and Extreme Heat and Cold Powered By Docstoc
					Blizzards and Extreme Heat and Cold




           Submitted to: Mr. Halpin
   Submitted by: Kara O’Kane, Laura Colella,
       Alyssa Thrasher, Emily McIntyre
        Date Submitted: April 8, 2005
 Causes of Blizzards!
A Blizzard occurs
because when a cold air
mass moves out of the
arctic into the
temperature zone. The
heavy cold air rises along
the boundary between the
two air masses. This
boundary is called a cold
front.
  When and Where do Blizzards
           Occur?
• Blizzards occur during the winter months
• Blizzards usually come from the North and South Poles,
  and arrive in Western Canada.
• Blizzards are not common in the US and are usually very
  dangerous because they are unprepared.
• Falling air pressure is a signal that a blizzard might be on
  the way.
• In order to predict a blizzard there will be snow with winds
  of 30 MPH and temperatures will remain below 20
  degrees.
                 History of Blizzards
•   The following picture indicates the
    blizzard which occurred in Halifax,
    Nova Scotia. This blizzard
    occurred on Feb 13-14. 62
    centimeters of snow smothered the
    province.
•   Two of these happened in the same
    year. The Blizzard of 1988
    paralyzed the Northeastern United
    States. In this blizzard, 400 people
    were killed, 200 ships were sunk,
    and snowdrifts towered 15 to 50
    feet high.
•   Earlier that year, the Great Plains
    states were struck by the
    Schoolhouse Blizzard that left
    children trapped in schoolhouses
    and killed 235 people.
            What to do During a
                Blizzard!
•   MAINTAIN A GOOD SUPPLY
    OF HEATING FUEL
•   ENSURE ANIMALS ARE
    SHELTERED
•   DON'T GO OUTSIDE.
•   WAIT OUT THE STORM
    INDOORS
•   BE PREPARED IN CASE OF
    POWER FAILURE.
•   BE ALERT FOR FIRE
    HAZARDS
•   USE CAUTION SHOVELLING
•   KEEP AN ADEQUATE SUPPLY
    OF PRESCRIPTION DRUGS ON
    HAND
        Potential for Destruction
• Blizzards have a major effect on transportation, leaving
  many people stranded.
• Blizzards cause many Hazards such as reduced visibility
  making it very hard to drive.
• Blizzards also cause many airports, schools, and bridges to
  close.
• Blizzards can cause major power outages.
• Blizzards cause a lot of damage which leaves the city
  having to pay for it.
        Super Duper Facts
• Over 3,000 people have died from past Blizzards
• The word blizzard is a modern one of unknown
  origin; but it is likely from the surname "Blizard." It
  was first widely used after the great American
  winter storm now known as the "Blizzard of 1880 ."
  Certain types of blizzards in the northeastern
  United States are colloquially known as
  Nor'easters . Some believe the origin of the word
  "blizzard" is from it's original use of scattered
  musket fire.
• In Blizzards winds can exceed up to 60 MPH.
• Visibility is reduced by 0.2KM during a blizzards

				
DOCUMENT INFO