Weather Warnings
TownsRuralMarineMtnsMaps

Thunderstorm Outlook

Valid to Midnight Friday 23 Aug 2019
Issued at 8:40am Friday 23 Aug 2019

A trough moves over the upper North Island today, bringing rain and embedded thunderstorms to northern parts of the North Island.

A moderate risk of thunderstorms is in place for western parts of Auckland, Waikato and Waitomo this morning with this trough, while a moderate risk in Northland covers most of the day. For eastern Bay of Plenty, a moderate risk of thunderstorms eases back to a low risk this evening.

There is a broader low risk of thunderstorms about the remainder of Northland not covered in the moderate risk area, and eastern parts of Bay of Plenty and northern Gisborne.

These thunderstorms (particularly in the moderate risk areas) may bring localised heavy rain with intensities of 10 to 20 mm per hour and strong wind gusts of 90 km/h.

Tonight, cold air aloft is expected to move over the upper North Island bringing another moderate risk of thunderstorms to western parts of Northland. Any thunderstorms that occur will be accompanied by small hail.

For the South Island, there is a low risk of thunderstorms along the west coast this morning, then moving offshore this afternoon. There is also a low risk of thunderstorms late afternoon and early evening about North Canterbury and the Kaikoura Coast.

Valid to Noon Saturday 24 Aug 2019
Issued at 10:06am Friday 23 Aug 2019

Showers, driven by cold upper-air temperatures, persist over the upper North Island during Saturday morning.

A moderate risk of thunderstorms is in place for western parts of Northland during the early hours of Saturday morning, while a broader lower risk covers the remainder of the morning, and also extending to eastern parts of Northland and all of Auckland.

No other thunderstorms or significant convection expected elsewhere.

Valid to Midnight Saturday 24 Aug 2019
Issued at 10:07am Friday 23 Aug 2019

No thunderstorms or significant convection expected during this period.