1. A presentation
made by -
Subhrajyoti
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You

2. What Is It??
In meteorology, a cyclone is an area of closed, circular
fluid motion rotating in the same direction as
the Earth. This is usually characterized by inward
spiralling winds that rotate counter clockwise in
the Northern Hemisphere and clockwise in
the Southern Hemisphere of the Earth. Most large-
scale cyclonic circulations are cantered on areas of low
atmospheric pressure.

3. Naming Of An Cyclone
Cyclones derive their names through a systematic
procedure laid down by the World Meteorological
Organization (WMO)
 United Nations Economic and Social Commission
for Asia and the Pacific (ESCAP).
India Meteorological Department (IMD).
National disaster management authority (NMDA)
Eight north Indian Ocean countries - Bangladesh,
India, the Maldives, Myanmar, Oman, Pakistan, Sri
Lanka and Thailand - have prepared a list of 64
names.

4. How It Is Formed??
Tropical cyclones are "warm core"
storm systems, powered by enthalpy
of condensation of high moisture
air, which condense at higher
altitudes. These are initiated due to
a nearby upper trough, which after
the formation of the initial
disturbance, depend on a storm-
relative upper level high to maintain
and increase their strength. Thus
tropical cyclone formation can be
visualized as gigantic vertical heat
engines powered by Earth's gravity
and rotation.

5. Major Tropical Cyclone Disasters during the past 270 Years in terms of
Human Loss

6. PICTURES OF CYCLONE

7. Tip1
Precautions Of Cyclone
Strong cyclone happened when you were at home, and it is necessary for you to stay away
from doors, windows and houses outside the walls. The safest place are underground and
semi – basement. In addition, you had better promptly cut off power supply.
Tip2
If powerful cyclone happened, you were happened to do something at outside. You have to
find a nearest low – lying land volts on the ground, but you should stay away from trees,
poles so as not to be smashed, and electric shock.
Tip3
Generally speaking, early warning and timely evacuation can largely reduce the loss
resulted from cyclones. It is extremely important to enhance prevention technology to
predict the coming of the cyclone beforehand.
Tip4
Building more anti – cyclone buildings and houses to defend cyclones’ attack is most
urgent thing for costal countries where cyclones often happened. It is reported that more
casualty and property loss are resulted from unstable houses and buildings.