FTAS31 KWBC 081718 TAF TAF VAAH 081700Z 0818/0924 18009KT 3000 HZ SCT015 SCT020 OVC080 TEMPO 0819/0823 20010KT 1000 TSRA SCT010 SCT020 FEW025CB BKN080 BECMG 0901/0903 18004KT 2000 BR HZ FEW015 SCT020 BKN080 BECMG 0908/0910 23005KT 5000 BR HZ FEW020 SCT025 TEMPO 0909/0913 23010KT 2000 -TSRA FEW012 SCT018 FEW030CB BKN080 BECMG 0913/0915 18005KT 3000 BR FEW020 SCT025 BKN080 TEMPO 0918/0922 2500 RA FEW015 SCT020 BKN080=