Heavy snow has been falling in parts of the south overnight, closing several roads and causing problems for traffic as what is expected to be the coldest day of the year so far closes in on the country.
Southland, central and south Otago, Milford and Queenstown have all had 2-7cm of snow overnight, with parts of the central North Island also affected by snowfall, said MetService duty forecaster Liz Walsh.
Chains were required in most places in the south and motorists were being warned to take extra care particularly over the Lewis, Porters, Arthur's and Lindis Passes.
In Invercargill, one of the worst-affected areas, there has been 7cm of snow in the past 12 hours and the temperature remained 0C this morning.
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