WVIN31 VOMM 041340 VOMF SIGMET 02 VALID 041345/041945 VOMM- VOMF CHENNAI FIR VAERUPTION BARREN ISLAND PSN N1217 E09351 VA CLD OBS AT 040730Z SFC/FL060 WI N1222 E09356 - N1129 E09356 -N1143 E09316 - N1224 E09348 MOV S 05KT FCST AT 041800Z SFC/FL060 WI N1218 E09356 - N1134 E09338 - N1153 E09313 - N1223 E09349=