641 FTAK31 PAFC 171730 TAFASN TAF PASN 171730Z 1718/1818 28011KT P6SM VCSH SCT025 BKN070 TEMPO 1718/1722 18015KT 4SM -SHSN BR OVC025 FM172200 14017KT 4SM -SHSN BR OVC025 FM180100 11022G32KT 1SM -SN OVC007 FM180900 08011KT 3SM -SHSN OVC025=