646 FTUS41 KPBZ 140521 TAFPIT TAF KPIT 140521Z 1406/1512 15005KT P6SM BKN200 FM141500 18015G25KT P6SM BKN150 FM150500 21015G25KT P6SM -SHRA OVC050 PROB30 1505/1507 5SM TSRA OVC035CB FM150900 23015G25KT P6SM BKN025=