Sodden ground from last week’s heavy rain, will make the city more prone to flooding, with showers expected to continue until Friday.
About 40mm of rain is expected in the city, but with the ground already saturated from the weekend’s downpour, the city is more prone to isolated flooding.
MetService meteorologist Rob Kerr said while the amount of rain was not ‘unusual’, the already sodden ground makes the city more vulnerable.
“We are not going to experience that much rain, however MetService have issued a watch period due to the already sodden ground following last weeks rainfall.”
The rain will ease on Thursday evening and light showers will continue on Friday.
The city council is closely monitoring river levels, tides and weather forecasts.
Meanwhile, snow is expected down to 300m for inland areas, potentially affecting high roads and livestock in certain areas.
But once again, the city will miss on any snow.
— MetService (@MetService) July 26, 2017
Snow has already closed several highways, including State Highway 8 between Tekapo and Fairlie.
NZ Transport Agency has issued several warnings for flooding and black ice along State Highway 1 from Rakaia through to Glenavy.
— NZTA Canterbury/WC (@NZTACWC) July 26, 2017
Drivers are urged to take care and use chains where necessary as conditions may change quickly.