A hevay rain warning remains in force for areas in the West Coast.
A moist northwest flow, with several embedded fronts, will bring rain to much of the South Island during today and Saturday, says the MetService.
"The heaviest falls are likely to be in Fiordland and Westland, and a heavy rain Warning covers these areas.
"People are advised to keep up to date with the latest forecasts and warnings in case new areas are added."
HEAVY RAIN WARNING
Heavy rain may cause streams and rivers to rise rapidly. Surface flooding and slips are also possible and driving conditions may be hazardous.
Area: Westland north of Fox Glacier
Valid: 16 hours from 11pm Friday to 3pm Saturday
Forecast: Expect 100 to 150mm of rain to accumulate during this time.
Peak rates of 20 to 35mm/hr during Saturday morning and thunderstorms possible.
Area: Westland between Fox Glacier and Haast
Valid: 12 hours from 9pm Friday to 9am Saturday
Forecast: Expect 70 to 100mm of rain to accumulate during this period.
Peak intensities 15 to 25mm per hour and thunderstorms possible.
Area: Fiordland and Westland south of Haast
Valid: 19 hours from 11am Friday to 6am Saturday
Forecast: Expect 120 to 150mm of rain to accumulate during this period. Peak rates of 15 to 25mm per hour and thunderstorms possible.