WSZA21 FAOR 201759 FAJA SIGMET B02 VALID 201800/202200 FAOR- FAJA JOHANNESBURG FIR EMBD TS FCST WI S2812 E03257 - S2912 E03411 - S3101 E03308 - S3047 E03236 - S3024 E03139 - S2812 E03257 TOP FL320=