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Hurricanes Why do we care about hurricanes? What was the biggest hurricane you heard about recently? Where did it make landfall? What damage occurred as.

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Presentation on theme: "Hurricanes Why do we care about hurricanes? What was the biggest hurricane you heard about recently? Where did it make landfall? What damage occurred as."— Presentation transcript:

1 Hurricanes Why do we care about hurricanes? What was the biggest hurricane you heard about recently? Where did it make landfall? What damage occurred as a result? What causes the damage?

2 http://woodshole.er.usgs.gov/project-pages/coast-enviro/sediment/images/991006.jpg http://chl.wes.army.mil/shore/72fireisland/images/134-Moriches%20Inlet.jpg What are these water features called? Can you think how the may be created?

3 History Lesson: 1938 Hurricane Long Island  700 deaths, 708 injured  4,500 homes, cottages, farms destroyed; 15,000 damaged  26,000 destroyed automobiles  20,000 miles of electrical power and telephone lines downed  $2,610,000 worth of fishing boats, equipment, docks, and shore plants damaged or destroyed  Created the Shinnecock Inlet (Hampton Bays, NY)

4 What is a Hurricane?  A strong storm of tropical origin, with sustained winds exceeding 74 mi/hr (119 km/hr)  Also known as Typhoon in North Pacific, Cyclone in India, and Tropical Cyclone in Australia  Have an intensity scale to associate wind speed with damage. What can you tell me about this scale?

5 Saffir Simpson Scale  Tropical Depression --- 25 mph to 38 mph  Tropical Storm --- 39 – 73 mph  Category 1 Hurricane — 74 - 95 mph  Category 2 Hurricane — 96 -110 mph  Category 3 Hurricane — 111 - 130 mph  Category 4 Hurricane — 131 - 155 mph  Category 5 Hurricane — 156 mph and up Faster winds = greater damage Question: What is the most dangerous part of the storm other than the winds????

6 2005 Hurricane Season Video

7 What is needed for hurricane formation? 1.Humid air 2.Warm ocean water 3.Weak Jet Stream – strong causes shearing, which hurts development 4.Line of thunderstorms - tropical wave that can merge together and form a series of convection cells (weather systems)

8

9 2005 Worst Hurricane Season on Record!!!! But Why????  Record 28 tropical and subtropical storms formed tropicalsubtropicaltropicalsubtropical  Record 15 became hurricanes  Record-tying 5 became Category 4 hurricanes  Record four reached Category 5 strength (the highest possible)

10 Video in Mississippi of Hurricane Katrina

11 Do Now (on index card)  Put answers to homework on one side (pg 129 – 130 #70 - 77)  Answer the following questions on the other side (using your book and notes): 1.How do hurricanes get their energy? 2. Why do we care about hurricanes? 3.What is necessary for hurricane formation? 4.Was the storm that passed a hurricane why or why not?

12 More about Hurricanes and Storms

13 Describe what is happening in this weather map

14 2-14-07 How did it change?

15 Animation: Wind Around Low Pressure

16 How a Noreaster Develops

17 What is the difference between a Noreaster and Hurricane?  Hurricane - A strong storm of tropical origin (low pressure) with sustained winds exceeding 74 mi/hr (119 km/hr)  Noreaster – Coastal storm (low pressure) caused by a arctic high pressure meeting a warm low pressure system, usually has E to NE winds

18 Noreasters and Port Jeff How could a Noreaster affect the area of Port Jeff? Hint: Think about what hurricanes do to the South Shore of Long Island

19 What could I use to make a scale model to show what storm surge is? Storm Surge – wind piling water up on coastal areas causing flooding

20 What does storm surge do?

21 How do we prepare for Hurricanes or Noreasters?  Having emergency supplies of water, food, lighting, heat, and back up power  Evacuate the coastal areas – move inland  Move to higher ground or to the second floor Why would be going in the basement be a bad idea???

22 What did you learn?  What is the difference between a hurricane and a Noreaster? VS.


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