Issued at 8:02am 4/06/2026

Valid from 8:02am 4/06/2026 to Midnight 4/06/2026

A moist northwesterly flow with embedded fronts and troughs is expected to affect New Zealand today. Periods of heavy rain are likely in many exposed areas. From southern Buller through coastal Grey, Westland, and Fiordland, there is a moderate risk of thunderstorms throughout the period. In northern Buller and western Nelson, there is a moderate risk of thunderstorms this evening and at night. In Taranaki and western Waitomo, there is a moderate risk of thunderstorms this afternoon, evening, and at night. These storms may be accompanied by heavy rain, with intensities of 10 to 25 mm/h. There is a low risk of thunderstorms across a broader area extending east of the moderate-risk areas, as well as in Kapiti, Wellington, Northland, Auckland, Waikato, the Coromandel Peninsula, and coastal Bay of Plenty. There is minimal risk of thunderstorms or significant convection elsewhere in New Zealand during this period.

Issued at 7:18pm 4/06/2026

Valid from Midnight 4/06/2026 to Midday 5/06/2026

A moist and unstable northwesterly flow with embedded fronts and troughs continues to affect the nation, with periods of heavy rain likely in many regions. For much of Taranaki there is a moderate risk of thunderstorms, as drawn on the chart. Thunderstorms here will likely bring heavy rain with intensities of 10 to 25 mm/h, and strong winds gusts around 100 km/h. For the Marlborough Sounds, western Tasman, and Buller to Fiordland, there is a moderate risk of thunderstorms with heavy rain of 10 to 25 mm/h. There is a low risk of thunderstorms in a broader area extending east from the moderate risk areas, which includes coastal Waitomo, Horowhenua to Wellington including the Tararua Range, and Nelson, as depicted on the chart. There is minimal risk of thunderstorms or significant convection elsewhere in New Zealand during Friday morning.

Issued at 8:17pm 4/06/2026

Valid from Midday 5/06/2026 to Midnight 5/06/2026

A moist and unstable northwesterly flow with embedded fronts and troughs affects much of the country, although it gradually becomes more stable over southern New Zealand. For Taranaki, Taumarunui, Waitomo, Waikato, Coromandel Peninsula, Auckland, Great Barrier Island, and Northland, there is a moderate risk of thunderstorms throughout the period. For the Bay of Plenty including Rotorua there is a moderate risk of thunderstorms from evening. Thunderstorms in these areas will likely be accompanied by heavy rain with intensities of 10 to 25 mm/h, and strong wind gusts around 100 km/h. There is also the possibility of localised tornadoes. For Otaki to Wellington including the Tararua Range, there is a moderate risk of thunderstorms from evening. Any thunderstorms that occur will likely produce heavy rain with intensities of 10 to 25 mm/h. For Buller, western Tasman, and the Marlborough Sounds, there is a moderate risk of thunderstorms throughout the period. Thunderstorms that occur will likely bring heavy rain with intensities of 10 to 25 mm/h. There is a low risk of thunderstorms in a broader area over the North Island and northern South Island, as drawn on the chart. There is a low risk of thunderstorms for Fiordland and Westland south of Hokitika during the afternoon. There is minimal risk of thunderstorms or significant convection elsewhere in New Zealand during this period.