FTSA41 KWBC 050521 TAF SEMT 050500Z 0506/0606 05003KT 9999 BKN020 BECMG 0514/0516 27008KT SCT023 BKN090 BECMG 0519/0521 FEW023 SCT100 BECMG 0600/0602 19006KT SCT020 SCT100 TX30/0520Z TN24/0510Z=