Weather live: Rain, snow and gales in store for South Island

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Parts of Marlborough and Canterbury are bracing for floods, snow and possible gales a day after another storm system slammed into Otago.

A red heavy rain warning for Marlborough and Canterbury between Ward and Hanmer and southeast of the Awatere Valley, including the Kaikoura ranges, runs until Wednesday morning.

Meanwhile, further north there is an orange rain warning and a watch for the Wairarapa region.

Snow about the Mackenzie Country is slowly easing.

Severe southeast gales are affecting the west of the South Island. The heavy rain is expected to be significant in parts of North Canterbury and Marlborough and a red heavy rain warning is in place.