WCPF21 NTAA 080551
NTTT SIGMET B02 VALID 080600/081200 NTAA-
NTTT TAHITI FIR/UIR TC NAT PSN S1857 W15001 CB FCST WI 30NM OF TC
CENTRE TOP BLW FL450 NC  FCST AT 1200Z TC CENTRE PSN S1857 W14918=