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Northern and Southern Cooks

Weather Bulletin issued from CIMS Nikao, Friday 24th May 2019 @ 11:00am CILT.

A DAMAGING HEAVY SWELL WARNING REMAINS IN FORCE FOR SOUTHERN COOK WATERS AND COASTAL AREAS.
A STRONG WIND WARNING REMAINS IN FORCE FOR LAND AREAS AND WATERS OF SOUTHERN COOKS.

 

Situation:

A high pressure system together with a low pressure system to the far southwest of Cook Islands generates and directs damaging heavy southerly swells and strong winds towards Southern Cooks. Meanwhile, a trough of low pressure with associated cloud and rain remains slow moving over the group.

 

A trough of low pressure lies slow moving over the western parts of Northern Cooks. Meanwhile, a moist easterly wind flow prevails over the group.

 

Forecast to midnight tonight for the Southern Cooks:

Over coastal areas: Expect sea flooding of coastal areas especially during high tides.

Over open waters: Easterly winds 20 to 25 knots. Damaging heavy swells with heights of upto 4.5m. Rough seas.

Over land: Southeast wind 20 to 25 knots especially over the southern parts. Moderate to fresh easterly winds elsewhere.

Occasional rain, heavy at times and few thunderstorms over most places.

Further outlook:    Rain easing to showers over northern parts. Fine

apart from brief showers elsewhere. Swells gradually abating.

 

For Rarotonga:

Expect sea flooding of coastal areas especially during high tides.

Southeast winds 20 to 25 knots.

Occasional rain, heavy at times and few thunderstorms.

Further outlook:    Fine apart from brief showers.

 

For the Northern Cooks:

Occasional showers and isolated thunderstorms over Pukapuka and Suwarrow. Fine apart from brief showers elsewhere.

Moderate easterly winds, fresh at times.

Moderate to rough seas.

Further outlook:    Fine apart from brief showers over most places.