TAF KSVN 240900Z 2409/2515 23009KT 9999 FEW070 QNH2987INS 
  TEMPO 2421/2502 21010G15KT 8000 -TSRA BKN050CB 
  BECMG 2503/2504 20009KT 9999 BKN070 QNH2989INS 
  BECMG 2509/2510 27009KT 9999 SKC QNH2988INS TX36/2418Z TN26/2509Z