Valid to Midnight Friday 18 Aug 2017
Issued at 11:18am Thursday 17 Aug 2017

Warning: STORM warning for COOK GALE warning for STEPHENS

Situation: An active front moves east across New Zealand today. A complex trough moves onto the country during Saturday, then moves north onto the upper North Island during Sunday, while a southerly flow covers the South Island and central New Zealand.

Forecast: Gale warning. Thursday: Northerly 40 knots gusting 50 knots, easing to 25 knots gusting 35 knots early afternoon and to 20 knots late evening. Very rough sea easing early afternoon. Poor visibility in rain, easing to a few showers this afternoon, then clearing this evening. Friday: Northerly 20 knots, easing to 15 knots in the morning and to variable 5 knots in the evening. Moderate sea easing in the morning. Morning and evening cloud.

Outlook: Outlook until midnight Monday: Saturday: Variable 5 knots, becoming southerly 10 knots late. Rain at times. Sunday: Southerly rising to 25 knots in the morning. Showers. Monday: Southerly 20 knots. Few showers.

Swell: Swell forecast to midnight Monday: Northwest 3 metres easing to 1 metre Friday, and to half a metre or less Saturday.

High tide at Mana
5:42pm Thu 17 Aug - Height: 1.3m
6:12am Fri 18 Aug - Height: 1.4m

Low tide at Mana
12:15am Fri 18 Aug - Height: 0.9m
12:14pm Fri 18 Aug - Height: 0.9m