Warkworth Region

Heavy Rain Watch

Period: 18hrs from 8pm Thu, 13 Jun - 2pm Fri, 14 Jun

Area: Auckland including Great Barrier Island and Coromandel Peninsula

Forecast: Periods of heavy rain, and amounts may approach warning criteria. Thunderstorms and localised downpours possible. Low chance of upgrading to a Warning.

Severe Thunderstorm Watch

Period: 7hrs from 10pm Thu, 13 Jun - 5am Fri, 14 Jun

Area: Auckland

Forecast: Reissue at 12:40pm Thursday - no changes. Periods of heavy rain with possible thunderstorms and/or localised downpours are expected to affect Auckland overnight tonight (Thursday) and Friday morning. Between 10pm tonight (Thursday) and 5am Friday, localised downpours of 25-40mm/h are possible in some parts of the Auckland region (including the islands of the Inner Hauraki Gulf). These downpours could occur with or without thunderstorms. Rainfall of this intensity can cause surface and/or flash flooding, especially about low-lying areas such as streams, rivers or valleys, and may also lead to slips. Driving conditions will also be hazardous with surface flooding and poor visibility in heavy rain. Further heavy rain or thunderstorms are possible on Friday, and this Severe Thunderstorm Watch may be extended.

Thursday 13th June - Cloudy. Patchy rain, becoming widespread and heavier this evening, with thunderstorms and downpours possible at night. Northeasterlies, fresh at times.

Friday 14th June - Rain, with heavy falls and possible thunderstorms. Northerlies, turning southwesterly in the afternoon. Also see Heavy Rain Watch above.

Saturday 15th - Fine. Westerlies, turning northerly in the afternoon.

Sunday 16th - Fine, but becoming cloudy. Northerlies, easing.

Mangawhai / Whangarei Region

Heavy Rain Watch

Period: 22hrs from 1pm Thu, 13 Jun - 11am Fri, 14 Jun

Area: Northland

Forecast: Periods of heavy rain, and amounts may approach warning criteria. Thunderstorms and localised downpours possible. Moderate chance of upgrading to a Warning.

Severe Thunderstorm Watch

Period: 20hrs from 3pm Thu, 13 Jun - 11am Fri, 14 Jun

Area: Northland

Forecast: Periods of heavy rain with thunderstorms and/or localised downpours are expected to affect Northland today and Friday morning. Between 3pm today (Thursday) and 11am Friday morning, localised downpours of 25-40mm/h may affect parts of Northland at times. These downpours could occur with or without thunderstorms. 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. The thunderstorm and downpour risk initially starts in the Far North this afternoon, then spreads southwards to other parts of Northland this evening.

Thursday 13th June - Occasional rain, becoming persistent and possibly heavy and thundery this evening. Northeasterlies.

Friday 14th June - Rain, heavy at times, with thunderstorms and hail possible, easing to a few showers in the afternoon as northeasterlies turn southwesterly.

Saturday 15th - Mainly fine, chance shower. Southwesterlies, turning northwesterly in the morning.

Sunday 16th - Fine, then rain developing in the afternoon. Northerlies, becoming fresh in the evening.