000 FTUS45 KVEF 181721 TAFLAS TAF KLAS 181721Z 1818/1924 04010KT P6SM BKN250 FM181900 09005KT P6SM BKN250 FM182200 16008KT P6SM BKN200 FM182300 21010G18KT P6SM BKN200 FM190300 20008KT P6SM FEW200 FM191200 VRB05KT P6SM SCT200=