Wet weekend expected
The weather is likely to be severe in Marlborough, the MetService warns.
A deep low of tropical origin is expected to approach the far north, then move south over the North Island during Saturday and Sunday, which could affect parts of the top of the South Island.
The MetService said at this stage there was still some uncertainty about the track and depth of the approaching low, but many parts of the North Island and upper South Island "may be in line for severe weather over the weekend".
There is a moderate risk of heavy rain over much of the North Island for a time during Saturday and Sunday, spreading south to Cook Strait, Marlborough and northern Canterbury on Sunday.
In addition, there is a moderate risk of severe gale easterlies spreading south over northern parts of the North Island on Saturday, then affecting Cook Strait, Kapiti Coast, Marlborough Sounds, Manawatu and Taranaki on Sunday.
Based on current information, adverse weather conditions may be widespread including:
Heavy rain for the northeast of the North Island from Northland to Bay of Plenty and northern Gisborne. Heavy rain also for the northeast of the South Island including Nelson, Marlborough and Canterbury (possibly including Christchurch which is particularly vulnerable due to its already saturated state).
Gale force winds for most areas of the North Island and upper South Island, with severe or damaging gales in some places depending on the track of the low.
As cyclone Lusi approaches New Zealand, people are advised to keep up to date with official weather warnings and forecasts from MetService in the coming days.
Detailed advice about what to do before, during and after storms is at www.getthru.govt.nz
Before a storm
The Marlborough Express