TAF WSD 181503Z 1815/1915 (1904/2004NZDT) 27020G30KT 1200 SN BR BLSN FEW008 BKN025 BKN050 QNH2850INS ALL WINDS GRID BECMG 1903/1905 (1916/1918) 36010KT 3200 -SN BR BLSN SCT020 BKN030 QNH2860INS