FTHV31 DFFD 151702 TAF DFFD 151700Z 1518/1624 06010KT 8000 NSC TEMPO 1518/1521 4000 HZ BECMG 1606/1608 3500 DU= TAF DFOO 151700Z 1518/1618 06010KT 8000 NSC TEMPO 1606/1610 3500 DU=