MetService has warned of heavy rain for parts of the South Island tomorrow.
A spokesman said an active front was forecast to move northwards across the South Island on Tuesday, delivering a period of heavy northwesterly rain into the west of the island, and strong northwesterlies to eastern regions.
The heaviest rain was expected in Westland (south of Otira), Fiordland and the headwaters of the Otago and Canterbury lakes and rivers.
A warning was now in force for these areas, he said.
Strongest winds were expected about the Canterbury High Country, and a warning for severe gale northwesterlies was also now in force for the area.
In the Otago head waters, between 90mm and 120mm of rain was expected to accumulate near the divide during Tuesday morning and afternoon, and 60mm to 80mm within 15km east of the divide.
Peak intensities of 15mm to 25mm per hour would fall, especially near the divide.
He said the heavy rain may cause streams and rivers to rise rapidly. Surface flooding and slips were also possible and driving conditions may be hazardous.
People are advised to keep up to date with the latest forecasts in case other areas are added to the MetService warning.
