Warkworth region

Friday 27th January - Rain with heavy falls. Chance of a thunderstorm. Northeasterlies, gale in exposed places, gusting 80 km/h.

Heavy Rain Warning - Orange

Period: 16hrs from 6am - 10pm Fri, 27 Jan

Area: Auckland

Forecast: Expect 70 to 100mm of rain, especially in the east and north, with thunderstorms possible. Peak rates of 15 to 25mm/h expected during Friday morning and afternoon. However, rates of 25 to 40mm/h are possible in localised downpours.

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

Saturday 28th January - Periods of rain, possibly heavy and thundery. Fresh northeasterlies.

Sunday 29th January - Showers, some heavy, becoming isolated with longer fine breaks in the afternoon. Fresh northeasterlies.

Mangawhai region

Friday 27th January - Rain with heavy falls. Chance of a thunderstorm. Northeasterlies.

Heavy Rain Warning - Orange

• Period: 20hrs from 8pm Thu, 26 Jan - 4pm Fri, 27 Jan
• Area: Northland
• Forecast: Expect 100 to 130mm of rain, especially in the east and north, with thunderstorms possible. Peak rates of 15 to 25mm/h expected during Friday morning and afternoon. However, rates of 25 to 40mm/h are possible in localised downpours. Note, once the broadscale heavy rain eases, heavy showers are expected on Friday night.
• Impact: Heavy rain may cause streams and rivers to rise rapidly. Surface flooding and slips are also possible and driving conditions may be hazardous.
• Issued: 8:24pm Thu 26 Jan
• Next update: 10:00am Fri 27 Jan

Severe Thunderstorm Watch

• Period: 15hrs from midnight Thu, 26 Jan - 3pm Fri, 27 Jan
• Area: Northland
• Forecast: Bands of heavy rain and embedded thunderstorms are expected to move across Northland during Friday morning and early afternoon. Some of these thunderstorms may be SEVERE, producing localised downpours of 25 to 40 mm/h. Rainfall of this intensity can cause surface and/or flash flooding, especially about low-lying areas such as streams, rivers or narrow valleys, and may also lead to slips. Driving conditions will also be hazardous with surface flooding and poor visibility in heavy rain. Expect thunderstorm activity to ease late Friday afternoon.

Saturday 28th January - Occasional rain. Northeasterlies.

Sunday 29th January - Rain. Northeasterlies.