TONGA AREA FORECAST VALID DEC 041700 TO 050800 UTC 2008. SITUATION: AN E/SE WINDFLOW PREVAILS OVR TONGA. WIND: [SPEED IN KNOTS] FL140 11010P04 FL100 10010 FL070 10010 FL050 10015 FL020 12015 SIGWX: NIL. VIS : 40KM, 10-15KM IN -SHRA. CLOUD: FEW-ST 008-012. SCT CU 015-030, TOPS 150-180. SCT-BKN SC 030-050, TOPS 060. FEW-SCT ACAS ABV FL100. TAF NFTV 040050Z 040212 11012KT 9999 FEW020 SCT050 BECMG 0406 VRB03KT BECMG 2123 11012KT TAF NFTL 040050Z 040212 11012KT 9999 FEW020 SCT050 BECMG 0406 VRB03KT BECMG 2123 11012KT TAF NFTF 041043Z 041212 10015KT 9999 -SHRA SCT010 SCT035 BECMG 2123 12015KT BECMG 0406 12008KT