TROPICAL CYCLONE ADVISORY NUMBER 6 FOR TONGA ON TROPICAL DISTURBANCE TD08F
ISSUED FROM THE FUA’AMOTU TROPICAL CYCLONE WARNING CENTRE AT 01:00AM TUESDAY 12 FEBRUARY 2019
TONGAN
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TROPICAL CYCLONE ALERT REMAINS INFORCE FOR TONGA.
WARNINGS:
A GALE WARNING REMAINS INFORCE FOR ALL OF TONGA LAND AREAS AND COASTAL WATERS.
A HEAVY RAIN AND FLASH FLOOD ADVISORY REMAINS INFORCE FOR ALL OF TONGA.
A HEAVY DAMAGING SWELL WARNING REMAINS INFORCE FOR ALL OF TONGA COASTAL WATERS.
SITUATION:
TROPICAL DEPRESSION TD08F WAS LOCATED NEAR LATITUDE 20.0 SOUTH, LONGITUDE 177.0 WEST OR 230KM WEST OF NOMUKA, 225KM WEST NORTHWEST OF NUKU’ALOFA AT 01:00AM THIS MORNING. THIS SYSTEM IS MOVING SOUTH SOUTHWEST AT THE SPEED OF 10 KNOTS (18KM/HR). THE POTENTIAL FOR THIS SYSTEM TO DEVELOP INTO A TROPICAL CYCLONE IS LOW. ON ITS CURRENT TRACK, TD08F IS EXPECTED TO LIE AT ABOUT 240KM WEST OF NUKU’ALOFA AT 07:00AM THIS MORNING. MEANWHILE, A TROUGH OF LOW PRESSURE LIES SLOW MOVING OVER TONGATAPU AND ‘EUA. ASSOCIATED CLOUDS, HEAVY RAIN AND STRONG TO GALE FORCE WINDS IS EXPECTED TO AFFECT THE GROUP.
FOR THE NIUAS:
NORTH TO NORTHWEST WINDS 20-25 KNOTS (37-47KM/HR), WITH MOMENTARY GUST UP TO 35-40 KNOTS (57-74KM/HR).
MOSTLY CLOUDY AND OVERCAST WITH OCCASIONAL RAIN, HEAVY AT TIMES WITH ISOLATED THUNDERSTORMS.
ROUGH TO VERY ROUGH SEAS. A HEAVY DAMAGING NORTHERLY SWELL.
POSSIBLE FLASH FLOOD AND SEA FLOODING IN LOW LYING AREAS.
FOR HA’APAI AND VAVA’U:
NORTH TO NORTHWEST WINDS 20-25 KNOTS (37-47KM/HR), WITH MOMENTARY GUST UP TO 35-40 KNOTS (57-74KM/HR).
MOSTLY CLOUDY AND OVERCAST WITH OCCASIONAL RAIN, HEAVY AT TIMES WITH ISOLATED THUNDERSTORMS.
ROUGH TO VERY ROUGH SEAS. A HEAVY DAMAGING NORTHERLY SWELL.
POSSIBLE FLASH FLOOD AND SEA FLOODING IN LOW LYING AREAS.
FOR TONGATAPU AND ‘EUA:
EAST TO NORTHEAST WINDS 20-30 KNOTS (37-47 KM/HR) WITH MOMENTARY GUST UP TO 35-40 KNOTS (57-74KM/HR).
CLOUDY WITH OCCASSIONAL SHOWERS, POSSIBLY HEAVY AT TIMES.
ROUGH TO VERY ROUGH SEAS. A HEAVY DAMAGING NORTHERLY SWELL.
POSSIBLE FLASH FLOOD AND SEA FLOODING IN LOW LYING AREAS.
TIDE PREDICTION
LOW TIDE : 06:25AM
HIGH TIDE : 12:49PM
THE MEAN SEA LEVEL PRESSURE RECORDED AT FUA’AMOTU AIRPORT AT 01:00AM WAS 1000.9 MILLIBARS AND THE RELATIVE HUMIDITY WAS 99%.
THE NEXT TROPICAL CYCLONE ADVISORY ON TROPICAL DEPRESSION 08F FOR TONGA WILL BE ISSUED AT ABOUT 08:00AM THIS MORNING.
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FCD: MT/LF/SP/TTK/FH/SV/= CRS: TT/UV/=