QT^ 



where 

 P 



Pn 

 P 



1 / V R 



+ fU (p - P ) — 



gr p \n 0/2 



a r 



R 



r 



(3-57) 



a 



U 



gT' 



Agreement 

 ricane is 



the pressure at a point located at a distance r from the 

 storm center 



the central pressure 



the pressure at the outskirts of the storm 



the density of air 



the gradient wlndspeed 



the Coriolis parameter 



between this model and the characteristics of a well-observed hur- 

 shown in Figure 3-42. The insert map gives the storm track; dots 



20 



kilometers 



40 60 



—I r— 



80 



— t— 



100 



— I 



20 



kilometers 



40 60 



— I 1 — 



80 



100 



750 r 



730 



720 



710 



^ + .U, = ^K-.)f,e-"A 



-I 160 



80 



- 60 



- 40 



Distance From Pressura C«nt«r (Statute Miles) 



Dlstanc* From Wind Csnier (Stotuta Milts) 



Hurricane on August 26-27, 1949 



a. Pressure profile. 



( from Harris , 1956) 



b. Wind Profile. 



Figure 3-42. Pressure and wind distribution in model hurricane. 

 (Plotted dots represent observations.) 



indicate the observed pressure at several stations in the vicinity of Lake 

 Okeechobee, Florida; the solid line (Fig. 3-42a) gives the theoretical 

 pressure profile fitted to three points within 80 kilometers (50 miles) of the 

 storm center. The corresponding theoretical wind profile is given by the 

 upper curve of Figure 3-42b. Observed winds at one station are indicated by 

 dots below this curve. A solid line has been drawn through these dots by eye 



3-82 



