WVAG31 SAME 192102 SAMF SIGMET 6 VALID 192102/200302 SAME- SAMF MENDOZA FIR VA ERUPTION MT COPAHUE PSN S3750 W07110 VA CLD OBS AT 2010Z WI S3750 W07109 - S3819 W07032 - S3844 W06945 - S3855 W06950 - S3825 W07046 - S3750 W07109 SFC/FL100 MOV SE 20KT VA CLD FCST AT 0210Z WI S3752 W07109 - S3813 W07049 - S3851 W06953 - S3858 W07008 - S3816 W07101 - S3752 W07109 SFC/FL100=