WSPF21 NTAA 300438 NTTT SIGMET A2 VALID 300500/300800 NTAA- NTTT TAHITI FIR/UIR EMBD TS FCST WI S1415 W15700 - S0500 W15700 - S0500 W14800 - S1115 W14800 - S1415 W15700 TOP FL530 STNR NC=