There is a moderate risk of thunderstorms for central and eastern parts of the North Island this afternoon and evening, says MetService.

This severe thunderstorm watch includes Bay of Plenty, Taupo, Gisborne and Hawke's Bay and is valid from 1pm - 9pm, Saturday March 4.

These thunderstorms will bring localised heavy rain and small hail. In addition, these thunderstorms are expected to be slow-moving, and consequently there is a moderate risk that some of these storms could become severe, producing localised downpours of 25 to 40 mm per hour, or possibly more.

The areas at risk are eastern Bay of Plenty, eastern Taupo, inland Gisborne and Hawke's Bay.

Rainfall of this intensity can cause surface and/or flash flooding, especially about low-lying areas such as streams, rivers or narrow valleys, and may also lead to slips.

Driving conditions will also be hazardous with surface flooding and poor visibility in heavy rain.

A Severe Thunderstorm Watch means conditions are favourable for severe thunderstorms in and close to the watch area. People in these areas should be on the lookout for threatening weather conditions and monitor for possible Severe Thunderstorm Warnings.

For information on preparing for and keeping safe during a storm, see the Civil Defence Get Ready website