000 FTUS46 KSGX 171720 TAFSNA TAF KSNA 171720Z 1718/1818 VRB04KT P6SM FEW010 FEW250 FM171900 21009KT P6SM SKC FM180300 VRB04KT P6SM FEW010 FM180700 VRB04KT P6SM OVC008 FM181500 VRB04KT P6SM SCT010=