WSNU20 TNCC 281525 TNCF SIGMET 1 VALID 281530/281800 TNCC TNCF CURACAO FIR EMBD TS OBS AT 1525Z WI AREA N1538 W07323 - N1508 W07344 - N1347 W07250 - N1456 W07213 - N1557 W07314 - N1538 W07323 MOV N INTSF=