TAF AMD SDM 081816Z 0818/0915 (0907/1004NZDT) VRB06KT 9000 -SN BR SCT005 OVC010 QNH2912INS ALL WINDS GRID TEMPO 0818/0821 (0907/0910) 1600 -SN BECMG 0820/0822 (0909/0911) 23008KT 1200 -SN BR SCT005 BKN010 OVC030 QNH2910INS AMD 081817