blizzards tornadoes typhoons Livy Liv SherryP8

							                By
Livy Ashburne, Sherry Gilronan, and
           Liv Markham
What are blizzards?
– Blizzards are large amounts of falling or blowing
  snow with winds in excess of 35 mph and
  visibilities of less than ¼ mile for at least 3 hours
– Heavy snowfalls and cold temperatures often
  accompany a blizzard, but are not required.
– “Blizzard Warning” or “Winter Storm Watch”
•
     DANGER
  Whiteouts
• Wind chill factor  makes it feel even colder
• Hypothermia/frostbite possible
• Heavy snow can accumulate on telephone
  lines and bring them down
• Power outages
How Blizzards Happen
• Needs below freezing temperatures in clouds and
  near the ground, moisture to form precipitation
  (wind blowing over lake or ocean), and lift (warm air
  colliding with cold and forcing the cold air to rise).
            Blizzard Safety Tips:
• Do not eat snow—it lowers your body temperature
• Cover all exposed parts of your body
• Build a snow cave if you need shelter
• Keep blood circulating by exercising fingers, toes, feet,
  arms
• Be prepared with extra food, water, a radio, a flashlight
  with extra batteries, a heating source, and a first aid kit
• Wear loose-fitting, lightweight clothing in several layers
  and a hat—half your body heat can be lost from your
  head
 Global Warming & Blizzards
• Global warming would cause fewer but more
  severe blizzards
• Greater frequency of severe storms and
  extreme weather events, including blizzards
  and hurricanes
• Temperature must be near
  or below 10° Fahrenheit
                         Tornados
   • Where are tornados normally?
    They are normally in Minnesota, Dakota, Iowa,
     Nebraska, Colorado, Kansas, Oklahoma, Texas.




http://www.oar.noaa.gov/spotlite
/archive/spot_climatology.html
               How do tornados form
• There is air that rises from the ground into the
  bottom of the thunderstorm cloud.
• The wind speeds and wind directions can cause the
  rising air to rotate vertically and this creates a
  vortex
• Sometimes the tornadoes develop in the cloud base
  to the ground.
• http://www.educypedia.be/education/climateanim
  ations.htm
•

•   The picture website http://www.mesoscale.ws/pic2004/040612-17.jpg
                 Safety Tips
• When you are out doors some safety tips are
  to find shelter and never stay in your car. Use
  your arms to protect your head and neck on
  the ground.
• When you are at a house and a tornado is
  happening the safest place to be is in the
  basement. If you have a concrete shelter in
  your house that would be the first place you
  would go.
        Safety tips continued
• One place you don’t go when a tornado is
  underneath a bridge
• A good website to see what happens is
  http://www.usatoday.com/weather/graphics/t
  ornadoes/flash.htm
                 Climate
• Scientists are not 100% sure but they think
  global warming increases the chances of
  tornados.
• http://www.tornadochaser.net/globalwarming
  .html
                                   Hurricanes
•   http://www.classzone.com/books/earth_science/terc/content/visualizations/es2008/es2008page01.cfm?c
    hapter_no=visualization

• Hurricanes are large tropical storms with heavy winds
• Hurricanes rotate in a counter-clockwise direction
  around an "eye”
• Hurricanes begin as tropical storms over the warm
  moist waters of the Atlantic and Pacific Oceans near
  the equator
• The eye is the calmest part of the Hurricane
• Once the winds reach 74 miles ph its clarified as a
  Hurricane
  How Climate affects Hurricanes

• No one is really sure what is going to happen when the
  climate goes up, but people estimate that global
  warming may cause Hurricanes to become worse
• There would also be a higher risk of flooding because
  the glaciers are melting
• They think that there may be a great risk of more
  Hurricanes of the climate goes up if the climate goes
  down it would not be able to form because Hurricanes
  need a warm moist water
                    Typhoons

• A violent cyclone that occurs in the northwest Pacific
  Ocean
• Inside a typhoon, strong winds blow around an area of
  low pressure at the storm's center, called the eye
• Form over warm water
• Typhoons rotate in the opposite direction that
  Hurricanes do
• http://news.bbc.co.uk/2/hi/science/nature/4183344.stm
    What is the difference between
     Hurricanes and Typhoons?
• Typhoons generally tend to be stronger than
  hurricanes
• In the Atlantic Ocean, Caribbean and eastern
  Pacific Ocean its called Hurricanes.
• But once you get to the Western Pacific Ocean,
  its called typhoons.
• Both are huge thunderstorms with lots of wind
• Both Spin wind
        Other useful websites
• http://esminfo.prenhall.com/science/geoanim
  ations/animations/Tornadoes.html

• http://www.tornadochaser.net/globalwarming
  .html
                   Websites Used…
•   http://www.ussartf.org/blizzards.htm
•   http://www.marshall.org/article.php?id=79
•   http://www.encyclopedia.com/doc/1G1-67662856.html
•   http://www.weather.com/glossary/b.html
•   http:\answers.yahoo.com/question/index?qid=200811004090554AANJzw
•   http:/www.fema.gov/kids/hurr.htm
•   http:/www.cotf.edu/ete/modules/sevweath/swhoware.html
•   http:/www.educypedia.be/education/climateanimations.htm
•   http://www.educypedia.be/education/climateanimations.htmhttp://
•   www.usatoday.com/weather/graphics/tornadoes/flash.htm
•   http://www.tornadochaser.net/globalwarming.html