Issued at 8:09am 4/07/2026

Valid from 8:09am 4/07/2026 to Midnight 4/07/2026

A series of fronts are moving east over the South Island today. The first front is expected to move over Fiordland and the West Coast today reaching Nelson and the far north of Northland at night. A second front follows, bringing periods of more active showers to Fiordland from afternoon and Westland from evening. There is a moderate risk of thunderstorms about Fiordland and south Westland this morning with localised heavy rain of 20 to 30mm per hour, however, in the second half of the day the rain rates reduce to 10 to 20mm per hour with the risk of hail, which spreads over Stewart Island in the afternoon, then the remainder of Westland during the evening and night. There is also a moderate risk of thunderstorms about the far north of Northland, about and north of about Karikari Peninsula at night, bringing localised heavy rain of 15 to 25 mm per hour. In addition, there is a low risk of thunderstorms about Stewart Island and coastal Southland during the period, which extends to Buller, western Tasman, northern Taranaki and the far north of Northland (north of about Kaikohe) during the evening and night as indicated on the chart. There is a minimal risk of thunderstorms or significant convection over other parts of New Zealand.

Issued at 10:20am 4/07/2026

Valid from Midnight 4/07/2026 to Midday 5/07/2026

A leading front is expected to move east over the North Island during the morning, with a broad trough developing over the South Island. There is a moderate risk of thunderstorms about and east of the Northland coast and the Great Barrier Island, which spreads over coastal parts of the Bay of Plenty east of about Te Puke during the morning. These thunderstorms bring the risk of localised heavy rain of 15 to 25 mm per hour as indicated on the chart. Additionally, there is a moderate risk of thunderstorms about Buller and coastal parts of Westland before dawn bringing localised heavy rain of 10 to 15 mm per hour and small hail. There is a low risk about coastal parts of Fiordland and the remainder of Westland and the Buller and northwest Nelson Ranges, the Marlborough Sounds, Taranaki, remainder of Northland and the Bay of Plenty, also the Coromandel Peninsula as indicated on the chart. There is a minimal risk of thunderstorms or significant convection over other parts of New Zealand.