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Public Information Statement
Latest Versions  [Current][-1]



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NOUS42 KCAE 031202
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PUBLIC INFORMATION STATEMENT
NATIONAL WEATHER SERVICE COLUMBIA, SC
805 AM EDT WED JUNE 3, 2015

...HURRICANE AWARENESS WEEK...

HURRICANES ARE PRODUCTS OF THE TROPICAL OCEAN AND ATMOSPHERE.  
POWERED BY HEAT FROM THE SEA, THEY ARE STEERED BY THE EASTERLY TRADE 
WINDS AND THE TEMPERATE WESTERLIES AS WELL AS BY THEIR OWN FEROCIOUS 
ENERGY.

TROPICAL CYCLONES ARE AN ORGANIZED SYSTEM OF STRONG THUNDERSTORMS 
WITH A DEFINED CIRCULATION AND MAXIMUM SUSTAINED WINDS OF 39 TO 73 
MPH.

A HURRICANE IS A TYPE OF A TROPICAL CYCLONE.  A HURRICANE BEGINS A
TROPICAL DEPRESSION - AN ORGANIZED SYSTEM OF CLOUDS AND THUNDERSTORMS
WITH A DEFINED CIRCULATION AND MAXIMUM SUSTAINED WINDS OF 38 MPH 
OR LESS. 

IF INTENSIFICATION CONTINUES, A TROPICAL DEPRESSION IS UPGRADED TO A 
TROPICAL STORM. WE HAVE ALREADY HAD OUR FIRST SYSTEM OF THE YEAR, 
NAMED ANDREA. THE NEXT SYSTEM WILL BE NAMED BARRY. 

ONCE THE WINDS IN A TROPICAL STORM EXCEED 73 MPH, THE SYSTEM IS 
UPGRADED TO A HURRICANE - AN INTENSE TROPICAL WEATHER SYSTEM WITH A 
WELL DEFINED CIRCULATION AND MAXIMUM SUSTAINED WINDS OF 74 MPH OR 
HIGHER.  IN THE WESTERN PACIFIC, HURRICANES ARE CALLED "TYPHOONS, 
AND SIMILAR STORMS IN THE INDIAN OCEAN ARE CALLED "CYCLONES."



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