WAUS44 KKCI 210845 WA4S DFWS WA 210845 AIRMET SIERRA UPDT 1 FOR IFR AND MTN OBSCN VALID UNTIL 211500 . NO SGFNT IFR EXP OUTSIDE OF CNVTV ACT. . OTLK VALID 1500-2100Z...MTN OBSCN TN KY BOUNDED BY HNN-HMV-GQO-40WSW GQO-50W LOZ-40NNE LOZ-40WSW HNN-HNN MTNS OBSC BY CLDS/PCPN/BR. CONDS DVLPG AFT 15Z. CONDS CONTG THRU 21Z. ....