Cyclone Gita is approaching fast, bringing gale-force winds, heavy rain and giant swells.
Severe wind warnings are in place for the upper two-thirds of the South Island. Some western areas of the North Island also face damaging winds. Heavy rain is also setting in across the country.
Weather forecasting site Weather Watch has compiled a list of what's about to hit New Zealand, region by region.
What's in store for Tuesday's weather
Northland, Auckland, Waikato and Bay of Plenty
Areas of cloud and the odd shower, some rain for a time in the evening. Humid northerlies picking up a bit becoming blustery at times this afternoon.
Western North Island (including Central North Island)
Mostly cloudy with a few showers, rain south of Palmerston North with heavy falls possible, especially about Kapiti then easing overnight.
Northerlies strengthen rising to gale force about Taranaki in the afternoon, severe gales near the coast then easing overnight as winds tend a little more northwest. Damaging winds possible.
Eastern North Island
Sunny areas and some high cloud, rain for southern Wairarapa. Winds gusty from the northwest although tending more southeast about Wairarapa.
Rain with heavy falls, rain may be torrential at times then easing this afternoon. Gusty southeasterly winds change from gales to severe gales northerly this evening. Damaging winds possible. Flooding possible.
Marlborough and Nelson
Rain with heavy, even torrential falls at times then easing overnight. Strong east to southeasterly winds may gust to gale at times from afternoon then winds change to northerly gales this evening. Severe gales this evening about places like the Marlborough Sounds and northern parts of Tasman. Damaging winds possible. Flooding possible.
Rain with heavy falls, especially in the evening where rain could be torrential for a time then easing a tad overnight.
Gusty southeasterly winds possibly rising to gales at times in the Banks Peninsula northwards from late afternoon then changing to strong southwest this evening, winds rising to severe gales about coastal areas.
While high up, very heavy snow develops over 1000m for Mid and South Canterbury, and above 1400m for northern parts of North Canterbury. Damaging winds possible. Flooding possible.
Rain develops for North Westland this morning with heavy falls, rain spreads southwards in the afternoon. Rain south of the glaciers is not as heavy. Rain eases for most later in the evening or overnight.
Winds strengthen from the southeast rising to gales in the afternoon north of the glaciers, winds may gust to severe gales at times then easing overnight. Damaging winds possible.
Southland and Otago
Cloudy with some patchy drizzle or the odd shower for Southland and southern Otago, more so from afternoon. Otago sees areas of rain especially Otago Peninsula northwards, rain may become heavy for parts of northern Otago. Southeasterly winds freshen.