TAF KGRF 211300Z 2113/2219 12006KT 9999 SKC QNH2994INS 
  BECMG 2117/2118 30009KT 9999 FEW220 QNH2988INS 
  BECMG 2203/2204 13006KT 9999 BKN220 QNH2991INS 
  BECMG 2215/2216 22009KT 9999 BKN140 QNH2991INS TX30/2200Z TN10/2113Z