Warkworth Region

Heavy Rain Watch

• Period: 10hrs from 2am - noon Friday, 16th Jun
• Area: Auckland from Whangaparaoa northwards, also Great Barrier Island
• Forecast: Rain could be heavy at times. Localised downpours of 25 to 40 mm/h are possible.
• Issued: 8:42am Thu 15 Jun
• Next update: 9:00pm Thu 15 Jun

Severe Thunderstorm Watch

• Period: 12hrs from 9pm Thursday, 15th Jun - 9am Friday, 16th Jun
• Area: Northland, Great Barrier Island
• Forecast: A band of rain associated with an active trough is expected to move southeastwards onto Northland during Thursday evening. There is a moderate risk of thunderstorms with this rain band, which may spread as far south as Whangarei and Dargaville by midnight, then further south after midnight. There is also moderate risk that these thunderstorms could become severe over Northland and Great Barrier Island, producing localised downpours of 25 to 40 mm/h, and possibly damaging tornadoes.

Mangawhai Region

Heavy Rain Watch

• Period: 16hrs from 6pm Thursday, 15th Jun - 10am Friday, 16th Jun
• Area: Northland
• Forecast: Rain could be heavy at times. Rainfall amounts may approach warning criteria, especially in northern and eastern areas. Localised downpours of 25 to 40 mm/h and thunderstorms are possible.

Severe Thunderstorm Watch

• Period: 12hrs from 9pm Thursday, 15th Jun - 9am Friday, 16th Jun
• Area: Northland, Great Barrier Island
• Forecast: A band of rain associated with an active trough is expected to move southeastwards onto Northland during Thursday evening. There is a moderate risk of thunderstorms with this rain band, which may spread as far south as Whangarei and Dargaville by midnight, then further south after midnight. There is also moderate risk that these thunderstorms could become severe over Northland and Great Barrier Island, producing localised downpours of 25 to 40 mm/h, and possibly damaging tornadoes.