NZ Weather Forum

Note that severe thunderstorms with downpours may affect parts of the North Island and watches for severe thunderstorms will be issued later this morning.

A moist unstable airmass affects the upper and central North Island today but conditions are expected to become drier and more stable from the west this afternoon and evening. For Northland there is a moderate risk of severe thunderstorms with downpours, bringing localised rainfall amounts of 25 to 40 mm per hour this morning and into the afternoon. For the east of the Coromandel Peninsula, Bay of Plenty including Rotorua, Taupo, Gisborne and Hawke's Bay north of about Napier there is a moderate risk of thunderstorms with heavy rain, 10 to 25 mm per hour this morning, afternoon and evening but for the eastern Bay of Plenty, Gisborne and Hawke's Bay north of Napier there is a moderate risk of severe thunderstorms bringing downpours, 25 to 40 mm per hour this afternoon and evening. For the south of Taumarunui, Taihape and Hawkes Bay from about Napier southwards there is moderate risk of thunderstorms with heavy rain, 10 to 25 mm per hour this afternoon and evening. There is a low risk of thunderstorms over a slightly broader are over the North Island as indicated on the chart.

Cold air at upper levels and a surface front are likely to bring showers to the east of the South Island today. For North Otago, Central Otago and the south of Canterbury there is a moderate risk of thunderstorms this morning and this afternoon. For inland Canterbury and inland Marlborough there is a moderate risk of thunderstorms this afternoon and evening as indicated on the chart. The storms over the South Island may be accompanied by heavy rain, 10 to 25 mm per hour and small hail. There is a low risk of thunderstorms in a slightly broader area over the South Island as indicated on the chart.

Powermad wrote: ↑Tue 26/12/2023 16:49 A nice mild Easterly in Christchurch to oppose the change. Could get interesting

Merry Christmas!