Issued at 7:29am 9/09/2026

Valid from 7:29am 9/09/2026 to Midnight 9/09/2026

A weak low moves east across the upper North Island today, bringing some showers. There is a low risk of thunderstorms in all of Northland from late morning. In the afternoon and evening the risk is moderate in an area north of about Whangarei as indicated on the chart. These storms may be accompanied by heavy rain, 10 to 20 mm/h and small hail. Meanwhile, a front moving northeast is expected to move onto the south of the South Island. With and behind the front there is a low risk of thunderstorms for the south of Fiordland and coastal Southland from afternoon, spreading into the north of Fiordland and much of Westland in the evening. These storms may be accompanied by heavy rain, 10 to 20 mm/h as indicated on the chart. There is minimal risk of thunderstorms or significant convection elsewhere during this period.

Issued at 8:46am 9/09/2026

Valid from Midnight 9/09/2026 to Midday 10/09/2026

A cold unstable and showery air-mass affects the south of the South Island. There is a low risk of thunderstorms in Fiordland and also for coastal Southland and Clutha as indicated on the chart. There is minimal risk of thunderstorms or significant convection elsewhere during this period.

Issued at 8:50am 9/09/2026

Valid from Midday 10/09/2026 to Midnight 10/09/2026

A front moves east over the North Island bringing a period of rain or frequent showers. There are some areas with a low risk of thunderstorms associated with the front. There is a low risk of thunderstorms in the afternoon for Wellington, Kapiti, much of Taranaki and coastal Waitomo and Waikato. From late afternoon and for much of the evening there is a low risk of thunderstorms in Auckland and Northland. These thunderstorms may be accompanied by heavy rain, 10 to 15 mm/h. There is minimal risk of thunderstorms or significant convection elsewhere during this period.