1. The History, Structure, Development, and Destruction
HURRICANES
The History, Structure, Development, and Destruction
Source:

3. Location

4. Hurricane Sandy
Hurricane Sandy was the largest Atlantic hurricane on record, as well as the second costliest Atlantic hurricane, (only surpassed by Hurricane Katrina in 2005)

5. Tracking Hurricane Sandy

6. Sandy Cost???
Sandy is estimated to surpass $50 billion . It would make it the second-costliest Atlantic hurricane in history, behind only Hurricane Katrina.

7. What is a hurricane?
Violent cyclonic storm that develops in the tropical region
Wind speeds are > 74 mph
Source:
Newsroom/NewImages/images.php3?img_id=680

8. How do Hurricanes Form?
Instant Egghead- How do Hurricanes Form?

9. Rotation and Pressure In which direction does a hurricane rotate?
COUNTERCLOCKWISE
Is the barometric pressure inside the hurricane high or low?
LOW

10. When is Hurricane Season?
June 1st
through
November
31st

11. What conditions must be present for a hurricane to develop?
Warm ocean temperatures (>80˚ F) up to 60m deep
Little to no wind shear
Low pressure system at least 5˚ North or South of Equator
Rotation caused by winds
Source:
gov/oa/reports/fran/fran.html

12. What is the major source of energy fueling a hurricane?
Heat Energy evaporating from the ocean surface
Source:

13. Hurricane Anatomy
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14. Comparison of Terms Tropical Wave Tropical Depression Tropical Storm
lack of circulation, winds <25 mph and every direction
Tropical Depression
closed circulation,disorganized, winds >25 mph
Tropical Storm
Shower and thunderstorm moves over closed circulation, winds greater than 39 mph
Hurricane
Eye is developed, winds > 74 mph

15. Compare the Following
Source:

16. By what two factors is hurricane strength measured?
Wind Speed
Barometric Pressure

17. What is the Scale Used to Categorize Hurricanes?
Saffir-Simpson Scale
Category
Max Wind Speed
(mph)
Min. Surface Pressure (mb)
Storm Surge m (ft) 1
74-96
> 980
1-1.7 (3-5) 2
97-111
(6-8) 3
(9-12) 4
(13-18) 5
> 155
< 920
> 5.7 (>19)
Source:

18. What causes the damage in a hurricane?
Winds
Flooding
Storm Surge

19. What is a storm surge?
Large wall or dome of water that rushes into the coastline as a result of a hurricane making landfall
To the right are the areas affected by high storm surges
Souce:

20. What destroys/ stops a hurricane?
Strong vertical winds
Cold water
Movement over land
Friction
Lack of moisture

21. What are the costliest hurricanes in the United States?

22. Explain why the majority of the costliest storms are relatively recent
Damage is a result of development
There are more developed areas and possessions than in the past
Source:

23. What are the deadliest hurricanes in the United States?

24. Explain why the deadliest storms were longer ago.
Lack of instrumentation to predict and track storms
People were not warned of the incoming danger
Results of the Galveston Hurricane
Source:

25. The Three You Remember…
Haiyan: 295 mph

26. Hainyan: 1200 miles

28. Haiyan: 30 feet

31. Haiyan: 10,000 estimate

33. Haiyan: Category 5

34. Largest North American Hurricanes
Hurricane Camile made landfall with wind speeds of ~165 kts or 190 mph (Category 5)

Hurricane Andrew made landfall with wind speeds of ~143 kts or 165 mph (Category 5)

Hurricane Hugo made landfall with wind speeds of ~118 kts or 136 mph (Category 4)

Hurricane Katrina made landfall with wind speeds of ~110 kts or 125 mph. (Category 3)
Hurricane Haiyan made landfall with wind speeds of ~110 kts or 125 mph. (Category 5)

35. How did hurricane Sandy affected you personally?
Damage to your house from wind?
Damage from flooding?
Destroyed vacation house?
Damage to family members’ homes?

37. Protection Listen to warnings Take all warnings seriously
Follow evacuations
Prepare Food and Water for extensive power outages

38. THE END
Source:

39. HAIYAN: A SUPER TYPHOON
Dockside
Tar River
Estates

40. Advance Evacuations
800,000 people were evacuated to emergency shelters.
RATED AS PROBABLY THE STRONGEST TYPHOON EVER TO STRIKE THE PHILIPPINES

41. FOUR HOURS OF FEAR AND DESTRUCTION
Winds flattened hundreds of homes,
Heavy rainfall triggered mudslides and flash flooding.
A storm surge with waves of up to 10 m (30 feet) destroyed everything, sweeping people away and drowning thousands.
Authorities said almost 800,000 people were evacuated to emergency shelters.

42. DESTRUCTION EVERYWHERE

43. DESTRUCTION EVERYWHERE

44. DESTRUCTION EVERYWHERE

45. Tacloban Airport

46. INITIAL IMPACTS IN THE PHILIPPINES
Wide spread flooding and power outages
Winds of 380 kph (290 mph)
TACLOBAN hit very hard by the storm surge with many deaths
Tacloban’s airport destroyed

47. INITIAL IMPACTS IN THE PHILIPPINES
Loss of communication
An estimated 10,000 people dead; EVEN HIGHER TOLL POSSIBLE
Economic losses in the billions

48. SURVIVOR NEEDS
Survivors are in desperate need of clean drinking water and food
Survivors temporarily cut off from aid, and from their families in the Philippines as well as in other countries (e.g., 3 million in the USA)

49. MORE DEVASTATION AHEAD
ANOTHER TYPHOON RATED AS A HEAVY RAINMAKER WITH APPROXIMATELY THE SAME PATH IS EXPECTED IN 3-4 DAYS