(as can be shown graphically), although there is a wide range of scatter 

 of the points. However, it appears from this relationship that R has 

 a tendency to decrease for increasing storm intensity (lower values of 

 CPI). The forward speed, the rate of movement of the hurricane eye, is 

 apparently independent of both B and CPI. Values of R range from about 

 11 to 35 nautical miles; Vp values range from h to 28 knots. If only 

 the integer values of the parameters in the ranges given above are used, 

 25 X 25 or 625 combinations could be formed. Based on this fact, Graham 

 and Nunn (1959) reduced the niimber of values to be considered for de- 

 veloping the SPH surge by specifying three values each for Vp and R. The 

 forward speeds were designated as slow (SV-p), mediixm (MV-p), and high (HVp] 

 the radius of maximum winds were classified as small (SR), medium (MR), 

 and large (LR). This notation, shown on Figure 2, indicates computed 

 surge heights for locations given on the coast and various Vp - R com- 

 binations. Table 2 shows the values of R, Vp, and CPI for the respective 

 locations indicated along the Texas Coast, and as originally given by 

 Graham and Nunn, The values given by the table show that CPI and R vary 

 throughout spatial range while prescribed values of Vp are independent 

 of position. 



TABLE 2 



Location 



BETA HURRICANE PARAMETERS 



(in, Hg) 



SR 



MR 



LR 



Forward Speed (knots. 



SV^ 



MV^ 



HV. 



Slow Mediiom High 



Port Arthur 27,5^ 

 Galveston 27,52 

 Bay City 27-^9 

 San Antonio Bay 27-^5 

 Sarita 27.38 

 Brownsville 27-28 



7 



Ik 



27 



1+ 



11 



28 



7 



Ik 



26 



k 



11 



28 



6 



13 



25 



k 



11 



28 



6 



13 



2I4 



k 



11 



28 



6 



12 



23 



k 



11 



28 



6 



11 



20 



k 



11 



28 



