TAF KPTK 161720Z 1618/1718 20011G25KT P6SM SCT250 
  FM170500 21014KT P6SM BKN015 BKN150 WS020/23040KT 
  FM171000 24011KT P6SM OVC012 
  FM171700 28009KT P6SM BKN015 OVC025