WCMX31 MMID 150920 MMID SIGMET 2 VALID 150910/151510 MMMX- MMFO MAZATLAN OCEANICA FIR/UIR TC KRISTY OBS N2148 W11436 AT 0900Z OCNL TS TOPS FL500 WI 200NM OF CENTRE MOV NW 8KT NC. FCST 151200 N2206 W11454=