Periods of heavy rain are expected to continue in the Coromandel Peninsula and Bay of Plenty until tomorrow.

In an updated weather alert, the MetService says heavy rain watches are in place for the Great Barrier Island, Coromandel Peninsula and the Bay of Plenty.

"There is a risk of localised heavy rain and downpours for northern parts of the North Island.

"A very moist air mass affects the north of the North Island, with a shallow low embedded along a front expected to move across the region from the west today and tomorrow morning.

"Please stay up to date with the latest forecasts in case changes are made."

Heavy Rain Watch

Area: Great Barrier Island and Coromandel Peninsula
Valid: 15 hours from 9am Mon 26 Feb to 12am Tue 27 Feb
Forecast: Periods of rain, locally heavy at times, with possible downpours. Accumulations may approach warning criteria in some places. Peak intensities 20 to 35 mm per hour.

Area: Bay of Plenty
Valid: 24 hours from 9am Mon 26 Feb to 9am Tue 27 Feb
Forecast: Periods of rain, locally heavy at times, with possible downpours. Accumulations may approach warning criteria in some places. Peak intensities 20 to 35 mm per hour.
Heavy rain easing from the west Tuesday morning.

Watches no longer in Force

Heavy Rain Watch lifted for Northland south of Dargaville, Auckland excluding Great Barrier Island: The risk of heavy rain has now passed and the Watch is lifted.