FATO40 NFFN 201500 TONGA AREA FORECAST VALID FROM APRIL 201700 TO 210800 UTC 2026. SITUATION: A TROUGH OF LOW PRESSURE LIES SLOW MOVING OVER TONGA. WINDS: [SPEED IN KNOTS] FL240 27035M15 FL180 30035M06 FL140 29025P02 FL100 30020 FL070 33015 FL050 35015 FL020 02020 SIGWX: OCNL SHRA & ISOL TSRA/+SHRA. VIS: 40KM, 10KM-15KM IN -SHRA, 5000M-10KM IN SHRA, LESS THAN 5000M IN TSRA/+SHRA. CLOUD: FEW-SCT CU 015-030, TOPS 100-180, BKN IN SIGWX. ISOL CB 015-025, TOPS 320-480. SCT-BKN SC 030-050. SCT-BKN ACAS ABV FL100 IN SIGWX. TAF NFTV 201126Z 2012/2112 07007KT 9999 SCT015 BKN100 PROB30 TEMPO 2015/2106 5000 TSRA BKN015 FEW018CB= TAF NFTL 192308Z 2000/2012 07009KT 9999 SCT017 BKN040 PROB40 TEMPO 2006/2012 5000 TSRA BKN015 FEW017CB= TAF NFTF 201124Z 2012/2112 03009KT 9999 SCT016 BKN100 PROB40 TEMPO 2012/2106 3000 +TSRA BKN012 SCT015CB=