FPTO40 NFTF 091700

FUA'AMOTU WEATHER FORECASTING CENTRE


WEATHER BULLETIN ISSUED AT 06:00AM SATURDAY 10 MAY 2025


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WARNING FOR LAND AREAS

	
A HEAVY RAIN WARNING AND FLASH FLOOD ADVISORY ARE NOW INFORCE FOR VAVA'U AND HA'APAI LAND AREAS AND REMAIN INFORCE THE NIUAS LAND AREAS.

A GALE WARNING REMAINS IN FORCE FOR ALL OF TONGA LAND AREAS.

		

SITUATION

	
A high pressure system lies to the far southeast of Tonga continues to circulate a strong to damaging gale force east to southeasterly winds across Tonga today and tomorrow. Meanwhile, an active trough is approaching the Niuas from the north this afternoon. It is expected to approach Vava'u and Ha'apai by early tomorrow morning. Associated clouds with heavy rain and thunderstorms may affect the Niuas, Vava'u and Ha'apai later today and tomorrow.

		

FORECAST TO MIDNIGHT TONIGHT FOR TONGA

	
FOR THE NIUAS:
Moderate to fresh east to southeasterly winds, strong to damaging gale force winds at times.
Mostly cloudy and overcast with occasional rain, heavy at times with isolated thunderstorms.
Possible flooding in low lying areas due to heavy rain.

FOR VAVA'U, HA'APAI, TONGATAPU AND 'EUA:
Moderate to fresh east to southeasterly winds, strong to damaging gale force winds at times.
Mostly cloudy with scattered showers.

		

OUTLOOK FOR SUNDAY

	
FOR THE NIUAS:
Moderate to fresh north to northwest winds, strong at times.
Mostly cloudy and overcast with occasional rain, heavy at times with isolated thunderstorm.
Possible flooding in low lying areas due to heavy rain.

FOR VAVA'U AND HA'APAI:
Moderate to fresh east to northeasterly winds, strong to damaging gale force winds at times.
Mostly cloudy and overcast with occasional rain, heavy at times with isolated thunderstorm.
Possible flooding in low lying areas due to heavy rain.

FOR TONGATAPU AND 'EUA:
Moderate to fresh easterly winds, strong at times.
Cloudy periods with scattered showers.

		
	
TEMPERATURE FORECAST FOR NUKU'ALOFA

	
MAXIMUM FOR TODAY: 28C
MINIMUM FOR TONIGHT: 23C

		
		

MARINE WEATHER BULLETIN

		

WARNINGS FOR COASTAL WATERS

	
A GALE WARNING, HEAVY DAMAGING SWELL AND SMALL CRAFT ADVISORY REMAINS IN FORCE FOR ALL OF TONGA COASTAL WATERS.

		

FORECAST TO MIDNIGHT TONIGHT FOR TONGA COASTAL WATERS

	
FOR ALL OF TONGA COASTAL WATERS:
East to southeasterly winds 20-25 knots, gusting up to damaging gale force winds 30-40 knots at times.
Rough to very rough seas (up to 4-5 metres). A heavy damaging southeasterly swell (up to 4 metres).
Poor visibility in the areas of heavy rain especially the Niuas and Vava'u Coastal Waters

		

OUTLOOK FOR SUNDAY

	
FOR THE NIUAS COASTAL WATERS:
North to northwest winds 20-25 knots, rising up to 30 knots at times.
Rough seas (up to 3.5 metres). A heavy damaging southeasterly swell (up to 4 metres).
Poor visibility in the areas of heavy rain.

FOR VAVA'U AND HA'APAI COASTAL WATERS:
East to northeast winds 20-25 knots, gust up to gale force winds 35-40 knots at times.
Rough to very rough seas (up to 4-5 metres). A heavy damaging southeasterly swell (up to 4 metres).
Poor visibility in the areas of heavy rain.

FOR TONGATAPU, 'EUA, TELE-KI-TONGA AND TELE-KI-TOKELAU COASTAL WATERS:
East to southeast winds 20-25 knots, gust up to gale force winds 30-35 knots at times.
Rough to very rough seas (up to 4-5 metres). A heavy damaging southeasterly swell (up to 4 metres).

		

TIDE PREDICTION IN NUKU'ALOFA TODAY

	
LOW TIDE: 12:20PM
HIGH TIDE: 6:30PM

		

SUN AND MOON IN NUKU'ALOFA TODAY

	
SUNRISE: 7:01AM.......SUNSET: 6:13PM
MOONRISE: 3:58PM.....MOONSET: 4:38AM early tomorrow morning

		

THE MEAN SEA LEVEL PRESSURE RECORDED AT FUA'AMOTU AIRPORT AT 06:00AM WAS 1014.6 MILLIBARS AND THE RELATIVE HUMIDITY WAS 87%.


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FCD: GV/SV= CRS: FL=