Rain and possibly thunder and lightning are expected to lash parts of the country again as MetService issues a severe weather watch for Manawatu down to Buller.
MetService communications meteorologist Lisa Murray said the slow-moving front would bring heavy rain to central New Zealand today and tomorrow, particularly in the Tararua Ranges.
There was also a moderate risk of more thunder and lightning.
Heavy rain had already closed State Highway 6 between Fox Glacier and Haast on the West Coast yesterday after a culvert washed out.
Between 130mm and 180mm of rain was expected on the Tararua Ranges from midday today until tomorrow afternoon.