WSTU31 LTFM 211157
LTBB SIGMET 6 VALID 211150/211450 LTFM-
LTBB ISTANBUL FIR EMBD TS OBS AT 1150Z E OF LINE
N4206 E02854 - N3925 E02619 - N3629 E02823 - N3606 E02957
TOP FL330 MOV NE 20KT NC=