SEVERE WEATHER WARNING.
ISSUED BY MetService AT 8:59am 04-Jul-2015
URGENT - IMMEDIATE BROADCAST IN: Northland
BURST OF HEAVY RAIN FOR NORTHLAND TODAY (SATURDAY).
A complex low north of New Zealand extends a trough over the upper
North Island, and this trough is expected to bring periods of heavy
rain to northern New Zealand today. The low is expected to move
southeast today and early tomorrow but should remain to the northeast
of the North Island, and the whole system should lie clear of the
North Island by midday tomorrow.
The heaviest rain is expected in Northland, where 50 to 80mm could
accumulate in a 6 to 9 hour period from late morning until early
evening and thunderstorms are also possible. There is the potential
for localised downpours, with rainfall rates in excess of 30mm per
hour, especially in the Far North and eastern areas.
People are advised that rainfall of this intensity can cause streams
and rivers to rise rapidly, slips and surface flooding.
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HEAVY RAIN WARNING
AREA/S AFFECTED: NORTHLAND
Periods of heavy rain are expected today (Saturday). In the 6 to 9
hours from 10am, expect 50 to 80mm to accumulate. Hourly rainfall
rates of 20 to 30mm per hour are likely, but in the north and east,
peak intensities in excess of 30mm per hour are possible, especially
NEXT SEVERE WEATHER WARNING WILL BE ISSUED AT OR BEFORE
9:00pm Saturday 04-Jul-2015
Forecast prepared by: Rochelle Fleming
For further information after 1:30pm Saturday July 4th contact Duty
Forecaster Hordur Thordarson
A service provided through a contract with the Crown
Short Range Forecast
Northland, Auckland, and Coromandel Peninsula: Rain clearing overnight, then cloudy periods and the odd shower.
Bay of Plenty, Gisborne and Hawkes Bay: Rain, clearing in the morning and becoming fine.
Waikato to Taranaki, also the central high country: Scattered rain clearing overnight. A few showers from Sunday afternoon.
Wanganui and Manawatu: Cloudy periods. A few showers from Sunday afternoon.
Kapiti, Wellington and Wairarapa, also Nelson, Marlborough and Canterbury: Mainly fine.
Buller and Westland: Periods of showers, heavy at times and possibly thundery in Westland.
Fiordland and Stewart Island: Occasional rain, heavy and thundery at times. Snow lowering to 200 metres late Sunday.
Otago and Southland: Scattered showers, some heavy and thundery about the south coast. Snow lowering to 200 metres late Sunday.
Chatham Islands: Rain developing.
Monday: North Island, occasional showers in the west, and mainly fine elsewhere. South Island, showers with some heavy in the west and south, and snow to 100 metres in the south, mainly fine elsewhere.
Tuesday: North Island, showers spreading to most places. South Island, showers clearing in the west, and showers spreading to most places elsewhere, with snow to near sea level in the south.
Wednesday: North Island, rain or showers with snow lowering to 400 metres in the south and east affecting some of the higher roads. South Island, Showers in the south and east with snow to low levels in the south, mainly fine elsewhere.
Chatham Islands: Occasional showers, becoming more frequent on Tuesday. Fresh westerlies persisting throughout the period.