A gale warning has been issued for the Niuas, while the rest of the Tonga group has received a strong wind warning.
Heavy rain warnings and flash flood advisory remain in force for the Niua Toputapu and Niua Fo’ou land areas.
Tonga MetService says an active trough of low pressure lies over the Niuas and is associated with cloudy to overcast skies, occasional heavy rain, thunderstorms, and strong gusting to gale-force winds for the rest of this week.
Meanwhile, a fresh to strong easterly wind will continue to prevail over the Vava’u, Ha’apai, Tongatapu, and Eua groups.
For Niua Toputapu, Met said a northwesterly wind of up to 20 – 25 knots, rising up to 30 – 35 knots at times and south to southeast at times tomorrow. Rough to very rough seas (up to four metres). Moderate northwesterly winds (up to three metres).
Poor visibility due to heavy rain.
For Niuafo’ou coastal waters, it said northwesterly wind of up to 20 – 25 knots rising to 30 – 35 knots at times and becoming south to southwest tomorrow. Rough to very rough seas (up to four metres). A moderate northwesterly winds (up to three metres).
Poor visibility due to heavy rain.
For Vava’u coastal waters, Met said an east-to-south wind of up to 15-20 knots rising up to 25 knots at times. The winds will become 20-25 and gust up to 30-35 knots at times tomorrow night. Moderate seas (up to two and a half metres) will then become rough to very rough seas by tomorrow night (up to four metres). Moderate northwesterly winds (up to three metres) will also be expected. Poor visibility due to heavy rain.
For Ha’apai, Tongatapu, and Eua coastal waters, east-to-southeast winds are 15-20 knots, rising to 25-30 knots at times. There are moderate to rough seas (up to three metres).
For Tele-ki-Tonga and Tele-ki-Tokelau coastal waters, the authority said easterly winds 15-20 knots.
Moderate seas (up to two metres).
