WSZA21 FAOR 170831 FACA SIGMET A01 VALID 171000/171200 FAOR- FACA CAPE TOWN FIR EMBD TS FCST WI S3046 E02801 - S3156 E03006 - S3224 E03008 - S3207 E02537 - S3108 E02506 - S3057 E02619 TOP FL320=