UAUS31 KWBC 182345 ARP UAL798 3412N 09710W 2330 F350 234/029KT TB LGT CHOP IC= ARP UAL1856 3544N 08753W 2340 F310 MS31 223/034KT TB SMTH= ARP UAL1875 3729N 08840W 2339 F320 220/052KT TB CONT LGT CHOP OCNL MOD CHOP IC RM A319 OV 3729N08840W ATC REPORTS BAD RIDES ABOVE FL270=