000 WAUS41 KKCI 162045 WA1S BOSS WA 162045 AIRMET SIERRA UPDT 3 FOR IFR AND MTN OBSCN VALID UNTIL 170300 . NO SGFNT IFR EXP OUTSIDE OF CNVTV ACT. . OTLK VALID 0300-0900Z...MTN OBSCN WV VA BOUNDED BY 40ENE EKN-20NE LYH-40SSE HMV-20NNE BKW-40ENE EKN MTNS OBSC BY CLDS/BR. CONDS DVLPG 06-09Z. CONDS CONTG THRU 09Z. ....