Hawke’s Bay is this morning under a fresh heavy rain warning with the cyclone-ravaged region set to be hammered by a 48-hour deluge.

MetService is also warning Auckland, East Coast, Wairarapa and Coromandel are in store for heavy rain and severe thunderstorms that could be intense downpours.

The latest weather warning for Hawke’s Bay was this morning upgraded to an orange heavy warning with the region expected to get up to 200mm of rain about the ranges and north of Hastings including the Esk Valley area and the Wairoa District.

The rain is expected to start falling this morning and last until 10am Saturday.

It said the heaviest falls were likely from 3pm tomorrow with peak rates of 30mm/h possible.

In Auckland the rain is to fall from noon until 10pm tomorrow.

MetService says the region should expect periods of heavy rain with thunderstorms.

It said rainfall amounts might approach warning criteria.

In the Coromandel thunderstorms are expected to develop this afternoon.

MetService is warning for the Coromandel Peninsula from the Coromandel Township southwards, the Hauraki Plains and Bay of Plenty from Te Puke westwards, some of these thunderstorms may become severe.

While the electrical storms are expected to ease by nightfall the forecaster is warning of flash flooding and a fresh threat of slips. Driving conditions were also expected to be hazardous with surface flooding and poor visibility in heavy rain, it said.