WSCG31 FCBB 250508 FCCC SIGMET A2 VALID 250530/250930 FCBB- FCCC BRAZZAVILLE FIR/UIR EMBD TS OBS AT 0500Z S OF LINE S0342 E01221 - S0332 E01347 W OF LINE N0332 E00900 - N0231 E00848 TOP FL400 MOV W 05KT WKN=