PART V — SEVERE STORMS 



radar detection and visual spotting, warning is a function of the spacing is needed on "steering methods" for 



usually performed by volunteers. of the spotters. tornadoes once they are known to 



This gives uneven results at best, exist. No work at all has been done 



since the ability of the spotter is as To be of maximum value a warning to determine how long a tornado will 



much a function of his zeal as any- should be as specific as possible with be in contact with the ground once 



thing else. The timeliness of the regard to area and time. More work it has been detected. 



148 



