WSZA21 FAOR 011834 FAJO SIGMET J01 VALID 011812/012200 FAOR- FAJO JOHANNESBURG OCEANIC FIR SEV TURB FCST WI S4359 W01000 - S4703 E00510 - S4851 E00630 - S4945 E00452 - S4938 W01000 FL065/300=