Situation:

A southerly wind flow prevails over Southern Cooks.

A weak trough of low pressure affects Northern Cooks. Meanwhile, a moist easterly wind flow prevails over Northern Cooks.

Forecast to midnight tomorrow for the Southern Cooks:

Fine apart from brief showers.

Moderate southerly winds, fresh at times.

Moderate to rough seas.

Further outlook:

Mainly fine.

For Rarotonga:

Fine apart from brief showers.

Further outlook:

Mainly fine.

For the Northern Cooks:

Cloudy period with some showers and possible thunderstorms about Penrhyn and Manihiki. Elsewhere, fine apart from brief showers.

Moderate easterly winds.

Moderate seas.

Further outlook:

Some showers and isolated thunderstorms.