Thunderstorms possible for South Island

People in nelson and Marlborough are being told to be prepared for the possibility of thunderstorms today.

Scattered thunderstorms are expected to develop about inland and northern parts of Nelson and Marlborough this afternoon and early evening.

"Some of these storms may be slow moving and severe, producing localised rainfall rates of 10 to 25mm/hr and possibly more, also hail of 10 to 20mm diameter with the possibility of large hail accumulations. Expect thunderstorm activity to ease later this evening," says the MetService.

​​​​​​​"Large hail accumulations can cause significant damage to crops, orchards, vines, as well as make driving conditions hazardous."