1926 1936 



YEARS 



1966 



1976 



(from Neumann et al., 1978) 



Figure 4-14. 



Annual distribution of the 761 recorded Atlantic tropical 

 cyclones reaching at least tropical storm strength (open bar) 

 and the 448 reaching hurricane strength (solid bar), 1886 

 through 1977. (The average number of such storms is 8.3 and 

 4.9, respectively.) 



100 

 90 

 80 

 70 

 60 

 50 

 40 

 30 

 20 

 10 

 



I I I I I 11 I I I I I 



I I I II I I I I I II I 



■ ■ • ■ I ,..,,. 



t-T 



10 20 30 

 MAY I JUNE 



10 



I I I 

 20 30 

 JULY I AUGUST I SEPTEMBER I OCTOBER | NOVEMBER I DECEMBER I 



-TilOO 

 -90 

 -80 

 -70 

 -60 

 -50 

 -40 

 -30 

 -20 

 -10 

 



(from Neumann et al., 1978) 



Figure 4-15. 



Number of tropical storms and hurricanes (open bar) and hurri- 

 canes alone (solid bar) observed on each day (smoothed by a 9- 

 day moving average). May 1-December 30, 1886 through 1977. 



4-34 



