000 WAUS42 KKCI 120845 WA2S MIAS WA 120845 AIRMET SIERRA UPDT 1 FOR IFR AND MTN OBSCN VALID UNTIL 121500 . NO SGFNT IFR EXP OUTSIDE OF CNVTV ACT. . AIRMET MTN OBSCN...NC GA FROM HMV TO 40S PSK TO 20W SPA TO 30SSE ODF TO 20ENE ATL TO 30ENE GQO TO HMV MTNS OBSC BY CLDS/PCPN/BR. CONDS ENDG BY 12Z. ....