UAUS31 KWBC 141439 ARP UAL18 4700N 05002W 1421 F360 194/056KT TB LGT OCNL MOD IC RM B772 OV 4700N05002W FL320 REPORTED SMOOTH= ARP UAL37 4825N 05659W 1421 F340 179/077KT TB CONT LGT CHOP OCNL MOD CHOP IC=