Issued at 7:22am 14/07/2026

Valid from 7:22am 14/07/2026 to Midnight 14/07/2026

A front moves across eastwards across the upper North Island today, bringing a low risk of a few thunderstorms from Northland and Auckland, across to Bay of Plenty and northern Gisborne/Tairawhiti, as depicted on the chart. Another front then moves northwards over much of the South Island, preceded by an unstable northwest flow. There is a high risk of thunderstorms this morning and afternoon for Fiordland and southern and central Westland, and parts of Southland, Otago and Canterbury near the Southern Alps, reducing to a low risk from evening. These thunderstorms may produce localised rainfall rates of 10 to 25 mm/h, strong wind gusts of 100 km/h, small hail, and a chance of small coastal tornadoes. A low risk of thunderstorms extends further east into these regions as depicted on the chart. A moderate risk of thunderstorms covers northern Westland, Grey and Buller districts, with localised heavy rain, small hail, and a slight chance of a small coastal tornado. A low risk of thunderstorms affects coastal Southland and Clutha this afternoon and evening, and western Tasman and the Marlborough Sounds late at night. There is minimal risk of thunderstorms or significant convection elsewhere during this period.

Issued at 8:04am 14/07/2026

Valid from Midnight 14/07/2026 to Midday 15/07/2026

A front lies slow moving over the northwest of the South Island during the morning, with an unstable northwest flow affecting central New Zealand. There is a low risk of thunderstorms from central Westland to Taranaki, as depicted on the chart. A weak trough moves onto the far south of the South Island in the morning, bringing a low risk of thunderstorms to southern Fiordland and Stewart Island. There is minimal risk of thunderstorms or significant convection elsewhere during this period.

Issued at 9:11am 14/07/2026

Valid from Midday 15/07/2026 to Midnight 15/07/2026

An unstable northwest flow affects central New Zealand throughout the period, with a low risk of thunderstorms from Taranaki to central Westland as depicted on the chart. The risk of thunderstorms is considered moderate however from central Westland to the Grey and Buller Districts during the afternoon and evening. These thunderstorms may produce localised rainfall rates of 10 to 25 mm/h, hail of 5 to 15 mm diameter, and a chance of a few small coastal tornadoes. Unstable northwesterlies also affect the far south of the South Island, with a low risk of thunderstorms for southern Fiordland and Stewart Island in the afternoon and again late at night. In addition, a front moves onto the north of Northland at night, bringing a low risk of thunderstorms there. There is minimal risk of thunderstorms or significant convection elsewhere during this period.