139 URNT12 KNHC 181212 VORTEX DATA MESSAGE AL042007 A. 18/11:51:20Z
P. AF304 0604A DEAN OB 03 MAX FL WIND 145 KT NE QUAD 11:48:40 Z SMALL HAIL INBOUND NE QUAD RADAR PRESENTATION EXCELLENT
Small hail is usually indicative of a storm trying to gain More intensity. Also unnerves the flight crew to some degree. Imagine hail hitting your car while traveling at 300 mph instead of 60mph.