A severe weather watch remains in place for heavy rain in the Bay of Plenty.

Thunderstorms and hail possible this afternoon and evening, says the MetService.

"A low over the Tasman Sea spreads an unsettled and humid northerly flow over New Zealand, with embedded fronts expected to cross the country today.

"Rain or showers with possible thunderstorms are expected to affect many areas of New Zealand, with some regions receiving heavy rain.

"A heavy rain watch remains in place for Waikato, Waitomo, Taumarunui, Taupo and Bay of Plenty.

"People are advised to keep up to date with the latest forecasts.
Heavy Rain Watch
Area: Waikato from Hamilton southwards, eastern areas of Waitomo and Taumarunui, Taupo and inland Bay of Plenty, including Rotorua
Valid: 12 hours from 9am Sun 11 Dec to 9pm Sun 11 Dec
Forecast: Periods of rain, heavy at times and thunderstorms possible. Rainfall amounts may approach warning criteria.