WSTR31 UTAK 161930 UTAK SIGMET 1 VALID 162000/162400 UTAK- UTAK TURKMENBASHI FIR EMBD TS FCST AND OBS ON LINE UTAK-UBBB UTAK-UTAA UTAK-UTAT UTAK-UTAN FIR TOP FL300/350 MOV NE 25KT NC=