FATO40 NFFN 192200 TONGA AREA FORECAST VALID FROM AUGUST 200000 TO 201200 UTC 2025. SITUATION: A SOUTHEAST WIND FLOW PREVAILS OVER THE AREA. MEANWHILE, A WEAK TROUGH OF LOW PRESSURE LIES SLOW MOVING TO THE NORTH OF TONGA. WINDS: [SPEED IN KNOTS] FL240 33035M19 FL180 25030M07 FL140 25030P01 FL100 22025 FL070 24020 FL050 24015 FL020 15015 SIGWX: ISOL SHRA. VIS: 40KM, 10KM-15KM IN -SHRA, 5000M-10KM IN SHRA. CLOUD: FEW-SCT CU 015-030, TOPS 100-180, BKN IN SIGWX. FEW-SCT SC 030-050. TAF NFTV 191715Z 1918/2018 12009KT 9999 FEW014= TAF NFTL 191605Z 1917/2008 15012KT 9999 FEW018= TAF NFTF 191715Z 1918/2018 16009KT 9999 FEW015=