FTCN26 CWAO 181000 AAB TAF AMD CYAH 181213Z 1812/1821 26005KT 2 1/2SM -SHRA BR BKN005 OVC015 TEMPO 1812/1817 P6SM NSW OVC012 FM181700 27010KT P6SM OVC025 TEMPO 1817/1821 OVC012 BECMG 1817/1819 29012KT RMK FCST BASED ON AUTO OBS. NXT FCST BY 181800Z=