TAF AMD WSD 171926Z 1719/1815 (1808/1904NZDT) 31015G25KT 0800 -SG BLSN SCT020 BKN060 BKN100 620604 QNH2830INS ALL WINDS GRID TEMPO 1721/1802 (1810/1815) 0200 SG BLSN BKN020 OVC060 620206