Issued at 7:15am 24/09/2026

Valid from 7:15am 24/09/2026 to Midnight 24/09/2026

A front embedded in a westerly flow is forecast to move slowly northwards over southern New Zealand today. For Fiordland south of George Sound, there is a low risk of thunderstorms until late evening. For Fiordland from George Sound northwards and Westland south of Haast, there is a low risk of thunderstorms from afternoon. For Westland from Haast northwards to the glaciers, there is a low risk of thunderstorms from evening. For Stewart Island and coastal parts of Southland and Clutha, there is a low risk of thunderstorms until late afternoon For the remainder of Southland and Clutha, also Dunedin, Central Otago south of Alexandra, North Otago, and the Canterbury Plains from Timaru southwards, there is a low risk of thunderstorms this afternoon. There is minimal risk of thunderstorms or significant convection elsewhere in New Zealand today.

Issued at 8:05pm 24/09/2026

Valid from Midnight 24/09/2026 to Midday 25/09/2026

A front embedded in a westerly flow moves slowly northwards over the central South Island during Friday morning. There is a low risk of thunderstorms for Fiordland north of George Sound, Westland, Grey, and Buller south of of Westport, although the risk south of Haast is only before dawn, as depicted on the chart. For Buller from Westport northwards, there is a low risk of thunderstorms after dawn. There is minimal risk of thunderstorms or significant convection elsewhere during this period.

Issued at 9:14am 24/09/2026

Valid from Midday 25/09/2026 to Midnight 25/09/2026

A front embedded in a westerly flow is forecast to move slowly northwards over central New Zealand during the second half of Friday. Meanwhile, daytime heating and wind convergences are expected to cause showers to develop about central and eastern parts of the North Island. There is a low risk of thunderstorms for Westland north of Hokitika, Grey, Buller, and Tasman west of Takaka during the afternoon. During the afternoon there is also a low risk of thunderstorms for the eastern hill country of Taranaki, Taumarunui, Tongariro National Park, southern Taupo, inland parts of Hawke's Bay and Gisborne/Tairawhiti, and eastern parts of Bay of Plenty, as depicted on the chart. From evening, there is a low risk of thunderstorms for western parts of the North Island from Raglan to Otaki, including the Tararua Range, as drawn on the chart. There is minimal risk of thunderstorms or significant convection elsewhere in New Zealand during this period.