Issued at 8:26am 6/07/2026

Valid from 8:26am 6/07/2026 to Midnight 6/07/2026

A front moves through Bay of Plenty and northern Gisborne this morning and the unstable and showery north to northwest flow continues to affect the upper North Island during Monday. There is a moderate risk of thunderstorms about coastal parts of Northland and the Great Barrier Island throughout the period, and these thunderstorms may bring heavy rain of 10-20mm/h, hail 5 to 15 mm in diameter and strong winds gusts of 80-100 km/h. There is also a moderate risk of thunderstorms for eastern Coromandel Peninsula, Bay of Plenty and northern Gisborne throughout the period, and these thunderstorms may bring heavy rain of 10-20mm/h with a risk of small hail. For much of the upper and North Island, there is a low risk of thunderstorms with small hail during the second half of Monday, but only for a time in the afternoon for Waikato, Waitomo coastal areas of North Taranaki. Finally, there is a rain band expected to move through Hawke's Bay, Wairarapa and Kaikoura Coast later in the day and there is a low risk of embedded thunderstorms as shown on the chart. There is a minimal risk of thunderstorms or significant convection over other parts of New Zealand.

Issued at 8:50pm 6/07/2026

Valid from Midnight 6/07/2026 to Midday 7/07/2026

The unstable north to northwest flow covers the upper North Island during the period. There is a moderate risk of thunderstorms for Northland, eastern areas of Auckland north of Albany, Great Barrier Island and Coromandel Peninsula as indicated on the chart. These thunderstorms could be accompanied by heavy rain of 10-20mm/h and hail of 10-15mm. There is a broader low risk for remainder of Auckland, Waikato and Bay of Plenty. There is a low risk of embedded thunderstorms in a rain band that extends through Wairarapa and the Kaikoura Coast. There is a minimal risk of thunderstorms or significant convection over other parts of New Zealand.

Issued at 9:29am 6/07/2026

Valid from Midday 7/07/2026 to Midnight 7/07/2026

A broad and unstable flow covers the upper North Island, with a low passing over Northland. There is a moderate risk of thunderstorms for parts of Northland, Great Barrier Island and Coromandel Peninsula as indicated on the chart. These thunderstorms could be accompanied by heavy rain of 10-20mm/h (but up to 25mm/h possible in Coromandel Peninsula) and hail of 10-15mm. The risk for eastern Northland becomes low from mid-afternoon. There is a broader low risk through the rest of Northland, Auckland, Waikato, Bay of Plenty and Gisborne. There is a low risk of embedded thunderstorms in a rain band that extends through Wairarapa. There is a minimal risk of thunderstorms or significant convection over other parts of New Zealand.