FATO40 NFFN 032200 TONGA AREA FORECAST VALID FROM MAY 040000 TO 041200 UTC 2024. SITUATION: A TROUGH OF LOW PRESSURE AFFECTS TONGA. WINDS: [SPEED IN KNOTS] FL240 32045M15 FL180 31025M06 FL140 30020P03 FL100 30015 FL070 29015 FL050 VRB05 FL020 15020 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 031706Z 0318/0418 09009KT 9999 SCT017 PROB40 TEMPO 0318/0410 5000 SHRA BKN015= TAF NFTL 031607Z 0317/0408 04010KT 9999 SCT017 PROB40 TEMPO 0400/0408 5000 SHRA BKN015= TAF NFTF 031708Z 0318/0418 27007KT 9999 FEW016 SCT040 TEMPO 0318/0324 3000 +TSRA BKN016 FEW017CB BECMG 0318/0320 17011KT=