WCMX33 MMZT 082120 MMZT SIGMET 4 VALID 082116/090316 MMMX- MMFO MAZATLAN OCEANICA FIR/UIR TC EMILIA OBS N1124 W10730 AT 2116Z OCNL TS TOPS FL530 WI 200NM OF CENTRE MOV WNW AT 13KT INTSF. FCST 090000 N1136 W10806 090600 N1206 W10924 091200 N1224 W11024 091800 N1242 W11124=