FAMX21 MMMX 050618 COR VALID 050618/060600 SYNOPSIS: JTST AXIS FL370 ALNG 32N119W 32N117W 29N108W 26N101W 26N095W MOV NE 15 KT MAX WIND 140 KT .. AFT 05/18Z ANOTHER JTST AXIS FL390 ALNG 29N119W 29N114W 28N110W MOV NE 12 KT MAX WIND 130 KT.. SIG WX: WI 40NM BTHSDS MMPG 25N098W 22N098W 20N097W LN BKN/OVC ST FL006/FL010 UP TO FL030 WITH ISOL FG ZNS BTN 05/09Z AND 05/15Z .. WI 40NM BTHSDS 18N095W 18N092W BKN STSC FL006/FL008 UP TO FL015 WITH ISOL BR ZNS BTN 05/09Z AND 05/15Z .. WI 60NM BTHSDS 33N117W 31N116W BKN CUSC FL006/FL010 UP TO FL030 TL 05/16Z .. WI 60NM BTHSDS 21N089W 19N088W LN BKN ST FL008/FL010 UP TO FL025 WITH ISOL BR ZNS BTN 05/09Z ADN 05/15Z .. AFT 05/18Z WI 90NM BTHSDS AXIS JTST FL390 BKN ASAC FL180 UP TO FL240 BKN CICS FL300 TL END OF PRD .. TURB: MOD/SEV WI 90NM BTHSDS JTST AXIS FL370 W 27N1103W BTN FL260/FL340 .. ICE: NIL.. FZ LVL: FL095/FL100 NW PRTN AREA RAISING GRDLY UP TO FL175/FL180 S AND SE PRTN AREA. SEE LATEST FZ LVL CHART.. VA: NIL. SEE LATEST SIGMET..