The Metservice has issued a Heavy Rain Warning.
Updated 2pm Monday 4 February
A front over the Tasman Sea is expected to move across the South Island during Monday. This front is preceded by moist northerlies, bringing rain to the west and north of both islands. Heavy rain is expected for the western ranges of Nelson (west of Motueka). In the 10 hours from 9am to 7pm Monday 4 February expect 60 to 90mm of rain on top of what has already fallen with peak intensities of 20 to 25mm/hr in possible thunderstorms.
People in these areas are advised rivers and streams may rise rapidly. Slips and surface flooding are possible.