飓----风优秀PPT.ppt

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1、概念经过影响起源Hurricane Betsy飓 风 温长华概 念 Hurricane Betsy was an intense and destructive tropical cyclone that brought widespread damage to areas of Florida,Mississippi,louisiana and the central United States Gulf Coast in September 1965.起 源 The origins of Hurricane Betsy can be traced back to an area of di

2、sturbed weather southwest of Cape Verde that first identified via TIROS satellite imagery，which concluded that the disturbance had become a tropical cyclone of moderate intensity on August 23.Hurricane Betsy north Hurricane Betsy north of the Bahamas from of the Bahamas from TIROS VII on TIROS VII o

3、n September 4,1965September 4,1965 Track map of Hurricane Betsy经 过 Betsy antecedent to being upgraded to hurricane intensity on August 29.An upper-level trough centered a short distance north of the tropical storm enhanced outflow conditions and speed divergence.Surface Surface Surface Surface weath

4、er weather weather weather analysis analysis analysis analysis map map map map of of of of Betsy Betsy Betsy Betsy onononon September 8September 8September 8September 8 However,on September 5,a blocking ridge of high pressure situated over the Eastern United States forced Betsy to make a tight,clock

5、wise loop and track in an unusual southwesterly path,redirecting it towards Florida and The Bahamas.Without much change in strength,the intense hurricane quickly traversed the Upper Keys and Florida Bay before emerging midday on September 8 into the Gulf of Mexico.Situated in the warm waters of the

6、Gulf of Mexico on September 8 Betsy began to strengthen and accelerate towards the west and then northwest,At roughly the same time,Betsy lashed Louisiana.影 响Track map of Hurricane BetsyRainfall totals in the United Rainfall totals in the United StatesStates影响The effects of Hurricane Betsy were of far-reaching and unprecedented severity.The final,Betsy killed more than$1 billion in damage,making it was nicknamed Billion Dollar Betsy.And also Betsy lashed Florida,Mississippi and Louisiana,causing the deaths of 74 people.Street flooding in Key West