170 leO 140 100 60 40 30 



^--' LEGEND 



_4_ COLD FRONT 

 .M- WARM FRONT 

 m^ OCCLUDED FRONT 



ISOBARS 



/ WIND DIRECTION AND 

 VELOCITY 



ei» towoiTuot 



Fig. 6.-Weather conditions prevailing at 6:30 A.M., C.S.T.. November 3, 1955; shown are pressure areas, isobars, fronts, 

 and wind directions and velocities as reported by the United States Weather Bureau. 



17 



