Winds are natural phenomena which occurs in different forms.
Different names can be heard for winds .Which are Hurricane, Cyclone, Typhoon etc.
These names mainly called based on the location.
Hurricane – Which is in North America and Caribbean.
Cyclone -is in Indian Ocean.
Typhoon- in Southeast Asia.
and Typhoons are called Willy Willies in Australia.
Cyclone occur much more often.
But few of them grow large and strong enough to become hurricanes or typhoons.
A tropical cyclone is a huge mass of clouds that gather in the sky and start rotating counter clock-wise due to very low air pressure.
The weekest version of a tropical cyclone is called a tropical depression.
It’s a similar swirling mass of clouds, usually accompanied by storms, but the force of winds in it is not very high.
When the winds are stronger than 39MPh, the cyclone is then called a tropical storm.
This is a more serious threat, because gust of wind might reach 72Mph.
And only if the wind gets even more powerful than that, then it can be called a hurricane or a typhoon.
If a severe tropical cyclone with wind Speed of over 75 mph occurs in the North Atlantic or North-East , its called hurricane.
If its in the North-West Pacific, then it’s a typhoon.
Typhoons are a bunch of clouds and thunderstorms that originate over tropical or subtropical ocean waters forming a closed circulation.
It’s a natural happening that occurs from time to time. It associate with phenomenon of violent winds, large waves, torrential rains and floods.
The biggest storm ever was Super Typhoon hit near micronesia in western pacific. Which is of 2200 Km wide and 305 Km/hr wind.
The causes of Typhoons are – >>>Pre existing weather disturbances>>> warm tropical oceans >>>> moisture >>>> relatively light winds.
We hear more about hurricane than typhoons because the Atlantic Ocean is warmer than the Pacific, and warm water acts like a fuel for cyclone.
Large and swirling storms . Produce winds of 119 Km per hour ( 74 mph ) or higher.
They form over warm ocean water .
Parts of Hurricanes :
Eye : The eye of the ‘hole’ of the centre of the storm . Winds are light in this area . Skies are parly cloudy and sometimes even waters.
Eyewall : The eyewall is a ring of thunderstorms . Theses storms swirl around the eye .
The wall is where winds are strongest and rain is heaviest.
Rain Bands : Bands of clouds and rain go far out from a hurricane’s eye wall .
These bands streatch fair hundreds of Miles . They contain thunderstorms and sometimes tornadoes.
Hurricane got the name from the God Huracan , the Mayan God of wind, storm and fire.
There are 5 categories of hurricanes according to the National Weather Service.
Category 1 is just slightly more intense than a tropical storm, and in some countries its still considered as such.
Category 2 is another story altogether. The wind blows at speed of up to 109 mph , and that’s where the real trouble starts.
When a hurricane grows to category 3 , its already a disaster.
First of all , it’s big . Secondly it’s powerful . The winds are reaching 129 mph , and catching such a gust is like being hit with a race car .
A category 4 major hurricane is something you don’t want to see with your own eyes .
With gusts of wind up to 157 mph , it can tear trees from the ground and hurl fairly large objects in the air , causing lots of damage .
And finally , a category 5 major hurricane is a thing to be avoided at all costs.
In other classifications it’s even called a super typhoon or a super cyclonic storm.
A Tornado is a Swirling funnel of air coming down from the sky. It appears during thunderstorms, and it’s rather a consequence than a reason for severe weather.
But despite its horrible power, a tornado is a very local event, and short-lived at that. The biggest one ever registered by scientists was just over 1.5 mi in diameter and lasted about an hour or so.
The centre, in its turn, is usually calm and windless – so calm, in fact , that its almost creepy.
It’s called the eye of the Tornado or the hurricane, and its the safest place to be when phenomenon comes to you.
- Biggest Cyclone Outbreaks in history are here mentioned below.
Hurricane Camille : 1969 August 14-22- United States.
Hurricane Mitch (1998) – October 22-November 9.- Central America.
Typhoon Nina (1975) – July 30 – August 6-China.
The Dust Bowl – 1930 s- USA and Canada.
Hurricane Katrina – ( 2005 ) August 23- 31 – Gulf Coasts of United States.
Bhola Cyclone – 1970 November 3 – 13 – India and East Pakistan
Iran Blizzard – ( 1972 ) February 3-9 – Iran
Tri-State Tornado – 1925 March 18 – Mid Western and South Western United States.
The great Galveston Hurricane – 1900 ( August 27 – September 17 ) – Galveston – Texas – USA.
Hurricane Mathew ( 2016 ) ( Sep 28 – Oct 10 ) – USA and Canada.
Cyclone Nagris ( 2005 ) April 27 – May 23 ) – Bangladesh, Myanmar, India, Srilanka.
Hurricane Sandy ( 2012 ) ( October 22 – November 2 ) – United States and Canada
The Coriolis Effect : In combination with an area of high preassure, causes the prevailing winds – the trade winds to move from east to west on both sides of the equator across this 60-degree “belt” .
The sinking air triggers the eastern trade winds and little precipitation , completing the cycle .
Doldrums is the popular nautical term that refers to the belt near the equator.
At equator where sailing ships sometimes get stuck on windless waters. Because the air circulates in an upward direction , there is often little surface wind in the ITCZ .
Westerlies :Westerlies are the Permanent winds that blow in the middle latitudes. They blow from the subtropical high-pressure belts towards sub-polar low-pressure belts.
The westerlies of the Southern hemisphere are more robust and constant than the westerlies of the Northern hemisphere.
Roaring Fourties : are strong westerly winds found in the Southern Hemisphere , generally between the latitude of 40 and 50 degrees .
The strong west-to-east air currents are caused by the combination of air being displaced from the equator towards the south pole , the earth’s rotation and the scarcity of landmasses to severe windbreaks.
Westerlies in southern hemisphere are stronger and persistent than in northern hemisphere .
Because Coriolis Force is higher in southern hemisphere as compared to Northern Hemisphere.