| TROPICAL CYCLONE ADVISORY NUMBER 10 FOR TONGA ON SEVERE TROPICAL CYCLONE HAROLD (CATEGORY 4) | |
| ISSUED FROM THE FUA’AMOTU TROPICAL CYCLONE WARNING CENTRE AT 9:00PM WEDNESDAY 08 APRIL 2020 | |
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| TROPICAL CYCLONE WARNING | |
| WARNINGS: | |
| A HURRICANE FORCE WIND WARNING REMAINS INFORCE FOR TONGATAPU AND ‘EUA LAND AREAS AND COASTAL WATERS.
A GALE FORCE WIND WARNING REMAINS INFORCE FOR HA’APAI, TELE-KI-TONGA AND TELE-KI-TOKELAU LAND AREAS AND COASTAL WATERS. A STRONG WIND WARNING REMAINS INFORCE FOR THE NIUAS AND VAVA’U LAND AREAS AND COASTAL WATERS. A HEAVY RAIN WARNING AND FLASH FLOOD ADVISORY REMAINS INFORCE FOR ALL OF TONGA. A HEAVY DAMAGING SWELL AND SMALL CRAFT ADVISORY REMAINS INFORCE FOR ALL OF TONGA COASTAL WATERS. AN ETREME HIGH TIDE REMAINS INFORCE FOR ALL OF TONGA COASTAL WATERS UNTIL SATURDAY. |
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| SITUATION: | |
| SEVERE TROPICAL CYCLONE “HAROLD” (CATEGORY 4) WAS LOCATED NEAR LATITUDE 19.6 SOUTH, LONGITUDE 179.8 EAST OR ABOUT 185KM NORTHWEST OF ONO-I-LAU (FIJI), 540KM WEST NORTH-WEST OF NUKU’ALOFA, 575KM WEST NORTH-WEST OF ‘EUA, 605KM WEST OF HA’APAI AT 7:00PM THIS EVENING. SEVERE TROPICAL CYCLONE “HAROLD” IS MOVING EAST SOUTH-EAST AT THE SPEED OF 21 KNOTS (42KM/HRS). THE MAXIMUM WINDS NEAR THE CENTER IS ABOUT 100 KNOTS (200KM/HR) WITH MOMENTARY GUSTS OF UP TO 140 KNOTS (260KM/HRS). ON ITS CURRENT TRACK, SEVERE TROPICAL CYCLONE “HAROLD” IS EXPECTED TO LIE AT ABOUT 325KM WEST OF NUKU’ALOFA, 350KM WEST NORTHWEST OF ‘OHONUA, ‘EUA AT ABOUT 1:00AM EARLY TOMORROW MORNING. MEANWHILE, AN ACTIVE TROUGH OF LOW PRESSURE LIES SLOW MOVING OVER VAVA’U, HA’APAI, TONGATAPU AND ‘EUA. ASSOCIATED CLOUDS, OCCASIONAL RAIN AND STRONG WINDS WILL CONTINUE TO AFFECT THE GROUP TONIGHT AND TOMORROW. | |
| FOR TONGATAPU AND ‘EUA: NORTH TO NORTHEAST WINDS 15-20 KNOTS (30-40KM/HR), RISING UP TO 25-30 KNOTS (50-60KM/HR) BY TONIGHT, THEN BECOMING NORTH TO NORTHWEST WINDS AND RAPIDLY INCREASE TO STORM FORCE WINDS 50-60 KNOTS (100-120 KM/HR) WITH MOMENTARY GUSTS OF HURRICANCE FORCE WINDS UP TO 75-95 KNOTS (150-190KM/HR) BY TOMORROW MORNING. OVERCAST WITH FREQUENT OCCASIONAL RAIN, HEAVY AT TIMES WITH SCATTERED THUNDERSTORMS. HIGH TO VERY HIGH SEAS (6-14 METERS). A HEAVY DAMAGING NORTHWESTERLY SWELL (UP TO 6 METERS). POOR VISIBILITY IN AREA OF HEAVY RAIN AND THUNDERSTORMS. EXPECT FLOODING IN LOW LYING AND COASTAL AREAS DUE TO HEAVY, SEA FLOODING AND STORM SURGE.FOR HA’APAI: NORTH TO NORTHEAST WINDS 15-20 KNOTS (30-40KM/HR), RISING UP TO 25-30 KNOTS (50-60KM/HR) BY TONIGHT, THEN BECOMING NORTHWEST WINDS AND GRADUALLY INCREASE TO GALE FORCE WINDS 34-47 KNOTS (63-87 KM/HR) WITH MOMENTARY GUSTS UP TO 55-60 KNOTS (110-120KM/HR) BY EARLY TOMORROW MORNING. OVERCAST WITH OCCASIONAL RAIN, HEAVY AT TIMES WITH ISOLATED THUNDERSTORMS. FOR THE NIUAS AND VAVA’U: |
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| TIDE PREDICTION | |
| LOW TIDE : 02:00AM (EARLY TOMORROW MORNING) EXTREME HIGH TIDE : 08:15AM (TOMORROW MORNING) |
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| THE MEAN SEA LEVEL PRESSURE RECORDED AT FUA’AMOTU AIRPORT AT 9:00PM WAS 1007.3 MILLIBARS AND THE RELATIVE HUMIDITY WAS 95%. THE NEXT TROPICAL CYCLONE ADVISORY ON SEVERE TROPICAL CYCLONE HAROLD FOR TONGA WILL BE ISSUED ABOUT 12:00AM MID-NIGHT TONIGHT. | |
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| FCD: LF/SP/PK/STP/FV/= CRS: ST/= | |
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Tropical Cyclone Advisory Number 10 for Tonga on Severe Tropical Cyclone Harold (Category 4)
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