CYCLONES

Presented by
Mashakgomo T.C
University of Johannesburg
What is a Cyclone?

•

Defined as a violent storm that is characterized
by high winds which rotates at a calm center of
lo...
How a cyclone is formed!!

• A cyclone is a storm that involves the movement of

warm, high-pressure air and cooler, low-p...
Diagram of a cyclone!!!
Countries that are effected by Cyclones!!!

•
•
•
•
•
•
•
•
•

The countries in the map
which are filled with
yellow color...
INDIAN CYCLONES
•
•
•
•
•
•
•
•

The coastal areas are subjected to severe wind storms and cyclonic storms.
A full-grown c...
Mid-latitude Storms

• Unlike mid latitude storms that derive their energy from

the contrast between warm and cold air ma...
Cyclones in Pakistan.!!

• Since Pakistan was created 2 cyclones have hit the sindh
coast. The first was in August 1948 an...
prepared by CT.Lakshmanan

9
Photos of Cyclone!!!
HURRICANES
The History, Structure, Development, and Destruction
What is a hurricane?

Violent cyclonic
storm that
develops in the
tropical region
Wind speeds are >
74 mph
What causes the damage in a
hurricane?

Winds
Flooding
Storm Surge
Flooding of Tar River as result of
Hurricanes Dennis and Floyd

Tar River
Estates

Mrs. Parker’s
Old House

Dockside

Fina...
Rotation and Pressure
In which direction does a hurricane rotate?
Counterclockwise

Is the barometric pressure inside the ...
Difference between Cyclone and
Hurricane!!!!!
• Hurricane: a violent wind which has a circular movement,
especially found ...
prepared by CT.Lakshmanan

17
Bibliography
•

MaHmOoD aShFaQ

http://www.slideshare.net/mahmoodjan71?
utm_campaign=profiletracking&utm_medium=sssite&utm...
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Tropicalcyclones

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Tropicalcyclones

  1. 1. CYCLONES Presented by Mashakgomo T.C University of Johannesburg
  2. 2. What is a Cyclone? • Defined as a violent storm that is characterized by high winds which rotates at a calm center of low atmospheric pressure. • The center has velocity of 50km an hour. prepared by CT.Lakshmanan 2
  3. 3. How a cyclone is formed!! • A cyclone is a storm that involves the movement of warm, high-pressure air and cooler, low-pressure air. This movement of air causes a rotation that picks up speed and creates a funnel.
  4. 4. Diagram of a cyclone!!!
  5. 5. Countries that are effected by Cyclones!!! • • • • • • • • • The countries in the map which are filled with yellow color are mostly effected by Cyclones. That are Bangladesh, India, Thai land, Malaysia, Indonesia Sri lanka, and much more near to the Indian ocean.
  6. 6. INDIAN CYCLONES • • • • • • • • The coastal areas are subjected to severe wind storms and cyclonic storms. A full-grown cyclone is a violent whirl in the atmosphere 150 to 1000 km across, 10 to 15 km high. Gale winds of 150 to 250 kmph or more spiral around the center of very low pressure area. Torrential rains, occasional thunder and lightning flashes - join these under an overcast black canopy. Through these churned chaotic sea and atmosphere, the cyclone moves 300 to 500 km, in a day to hit or skirt along a coast, bringing with it storm surges as high as 3 to 12 metres, as if splashing a part of the sea sometimes up to 30 km inland leaving behind death and destructions. A storm surge is the sudden abnormal rise in the sea level caused by cyclone. The sea water flows across the coast as well as inland and then recedes back to the sea. Great loss of life and property takes place in the process. prepared by CT.Lakshmanan 6
  7. 7. Mid-latitude Storms • Unlike mid latitude storms that derive their energy from the contrast between warm and cold air masses. Tropical Cyclones oceans as water evaporates from the ocean surface.
  8. 8. Cyclones in Pakistan.!! • Since Pakistan was created 2 cyclones have hit the sindh coast. The first was in August 1948 and the 2nd in May 1999. This cyclone was about 80 km east of Karachi . In Karachi some refugees’ tents were blown drown but there was no other damages.
  9. 9. prepared by CT.Lakshmanan 9
  10. 10. Photos of Cyclone!!!
  11. 11. HURRICANES The History, Structure, Development, and Destruction
  12. 12. What is a hurricane? Violent cyclonic storm that develops in the tropical region Wind speeds are > 74 mph
  13. 13. What causes the damage in a hurricane? Winds Flooding Storm Surge
  14. 14. Flooding of Tar River as result of Hurricanes Dennis and Floyd Tar River Estates Mrs. Parker’s Old House Dockside Final Water Level
  15. 15. Rotation and Pressure In which direction does a hurricane rotate? Counterclockwise Is the barometric pressure inside the hurricane high or low? Low
  16. 16. Difference between Cyclone and Hurricane!!!!! • Hurricane: a violent wind which has a circular movement, especially found in the West Atlantic Ocean. A hurricane is actually a violent storm formed with water which causes heavy rains and fierce winds and they can cause flooding of streets and homes. • Cyclone: a violent tropical storm or wind in which the air moves very fast in a circular direction. They can be formed over tropical water, bar the Southeast Pacific and the South Atlantic Oceans.
  17. 17. prepared by CT.Lakshmanan 17
  18. 18. Bibliography • MaHmOoD aShFaQ http://www.slideshare.net/mahmoodjan71? utm_campaign=profiletracking&utm_medium=sssite&utm_source=ssslideview • Ashley Proctor, Samone Proctor, Chelsea Addison http://www.slideshare.net/jmrosenb? utm_campaign=profiletracking&utm_medium=sssite&utm_source=ssslideview • CT. Lakshmanan B.Arch., M.C.P.SRM School of Architecture, RM University http://www.slideshare.net/ctlachu? utm_campaign=profiletracking&utm_medium=sssite&utm_source=ssslideview • Chritiano Felix, http://www.slideshare.net/liano8? utm_campaign=profiletracking&utm_medium=sssite&utm_source=ssslideview

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