Warning: NIL warning for PLENTY

Situation: A strong southwest flow over New Zealand weakens on Saturday as a narrow ridge moves onto the country from the Tasman Sea. A trough crosses the South Island on Sunday and the North Island on Monday, followed by another ridge.

Forecast: Strong wind advisory. Thursday: Southwest 25 knots gusting 35 knots. Sea rough. Fair visibility in showers developing this afternoon, becoming isolated this evening. Friday: Southwest 25 knots gusting 35 knots. Sea rough. Mainly fine.

Outlook: Outlook until midnight Monday: Saturday: Southwest 20 knots, easing to 15 knots at night. Early showers, then mostly fine. Sunday: Southwest 15 knots, tending northwest 15 knots in the evening. Cloud increasing, a few showers developing. Monday: A change southwest 20 knots. A few showers.

Swell: Swell forecast to midnight Monday: Nil significant.

High tide at Tauranga
Time: 4:48pm Thursday 17 May 2012 - Height: 1.7m
Time: 5:05am Friday 18 May 2012 - Height: 1.7m