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The week ahead – westerlies and fronts

Yes this week has a series of fronts moving through in a mostly westerly quarter windflow, western regions are therefore likely to get some reasonable rain this week while out east pickings are a bit slimmer. Canterbury could certainly do with a dry week but in saying that, a front near the end of the week delivers some rain to red and black country.

For today’s weather check out this morning’s national forecast here.

On Tuesday we have a slight reprieve from inclement weather so to speak. A west to northwest airflow lies across the whole country. Eastern regions of both islands do well with mostly sunny conditions and warm temperatures. The Bay Of Plenty and Waikato northwards in the west looks mostly sunny as well with westerly winds, there is the low risk of a shower moving through in the afternoon about Auckland and Northland.

From Fiordland up though to Taranaki periods of cloud are likely to deliver the odd shower during the day.
Wellington stays dry with northerlies, Southland sees northwesterly winds with
high cloud and the odd spot of rain.

A low pressure system organises itself over the lower South Island on Wednesday, winds are variable. The airflow
for the upper South Island and North Island remains from the west. For Northland
down through to Kapiti including the Bay Of Plenty, expect showers, especially
from afternoon and there may even be a heavy fall or two out west. The east
coast is dry and warm.

For the South Island expect mainly dry conditions with some sun in the east from Canterbury northwards, including Nelson. The West Coast has morning rain, possibly heavy with thunderstorms then easing to showers
in the afternoon. Southland and Otago have cloudy areas and the odd shower
about, winds are generally light but overnight south to southeasterly winds
increase with areas of precipitation becoming more widespread.

A westerly airflow lies across the North Island on Thursday, a southerly wind change
gradually moves northwards over the South Island during the day in-behind a low
over the upper South Island. Expect rain or showers for western regions of both
islands, Taranaki southwards may see heavy falls in the morning then easing
midday. Rain clears from afternoon about Fiordland as a southeasterly airlfow
pushes through.

Morning high cloud for the east of the North Island, a few spots of rain possible too then brightening up in the afternoon. Southland and Dunedin see rain with southerly winds, Canterbury and Marlborough are dry
with light winds and sunny spells however southerlies work their way through in
the afternoon and evening respectively bringing rain or showers which then clear

Finally on Friday expect morning showers across the North Island to generally clear away although the odd one may remain in the west about Taranaki and Wairarapa in the east, winds will be brisk to strong from the west.
About the South Island a new area of low pressure moves in bringing rain to the
West Coast and showers for Southland, later in the day southerlies push up the
east coast bringing showers.

Homepage image / Chris Johnson

By Weather Analyst Aaron Wilkinson –


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