A severe weather warning has been issued for the Coromandel
Peninsula, northern Gisborne, Bay of Plenty and Taranaki.
MetService warned people living in those areas that rivers
may rise rapidly and surface flooding was possible in
The weather was being caused by a humid northeast flow
covering the North Island.
A front lying over the upper North Island is expected to move
slowly south-eastwards today, preceded by a broad area of
The heaviest falls were expected about the Coromandel
Peninsula, Bay of Plenty, and the northern parts of Gisborne,
where 80-120mm is expected to accumulate, also Mt Taranaki
where 50-80mm is expected over a short period this afternoon.
Localised heavy downpours were possible in thunderstorms.
MetService duty forecaster Leigh Matheson said the weather
was being caused by a broad, complicated and humid low
currently moving across much of the North Island.
The low had come across the Tasman sea with a region of
slow-moving northeasterlies ahead of it, she said.
"That allowed subtropical air to be pulled down over the
"That broad trough which is sitting out to the west is
expected to move slowly east over the country."
The trough was mostly affecting the North Island, however
Nelson was also affected, Ms Matheson said.
"There's a lot of low cloud around the coast of Canterbury,
but they're generally not being affected by it."
The rain would move away from Auckland today, although there
would still be a chance of heavy, thundery showers from the
afternoon and into the evening, she said.
"Although some fine breaks are on the cards, there are still
localised heavy falls to be expected."
The humidity would remain overnight and Aucklanders will wake
to low cloud and patchy drizzle in the western areas
tomorrow, to be followed mostly by fine breaks later in the
day, Ms Matheson said.
When the trough moved away on Friday, is was set to be
replaced by another moving down from the Tasman Sea, which
would bring with strong norwesterlies and heavy falls which
would affect the lower North Island and the West Coast in the
South Island, she said.
- By Brendan Manning of APNZ