Severe Weather Warnings

Extended period of significant heavy rain for northern and western parts of New Zealand. Severe northeast gales for northern New Zealand.

A complex trough of low pressure, preceded by a moist northerly flow, is expected to move onto New Zealand from the Tasman Sea today and become slow-moving on Wednesday. The trough is expected to move slowly eastwards across the county during Thursday and Friday. This weather system is forecast to bring an extended period of northerly rain to northern and western parts of New Zealand, where Heavy Rain Warnings and Watches are in force.

In addition, gale to severe gale north to northeasterly winds will affect northern and central parts of New Zealand, and Strong Wind Warnings and Watches are in place.

This is expected to be a significant weather event, especially for places where soils are already saturated from recent rain. People are advised to keep up to date with the latest forecasts, as some areas could be upgraded to a Red Warning, and more areas may be added.

Heavy Rain Warning - Orange

Impact: Heavy rain may cause streams and rivers to rise rapidly. Surface flooding and slips are also possible and driving conditions may be hazardous.

Area: Northland

Period: 39hrs from 6pm Wed, 17 Aug - 9am Fri, 19 Aug

Forecast: Expect 140 to 180 mm of rain, especially in the north and east. Peak rates of 10 to 15 mm/h expected.

Strong Wind Warning - Orange

Impact: Strong wind gusts could damage trees, powerlines and unsecured structures. Driving may be hazardous, especially for high-sided vehicles and motorcycles.

Area: Northland

Period: 42hrs from 6am Wed, 17 Aug - midnight Thu, 18 Aug

Forecast: Severe northeast gales gusting 120 km/h in exposed places.