SEVERE WEATHER WARNING.
ISSUED BY MetService AT 8:33pm 28-Aug-2015
URGENT - IMMEDIATE BROADCAST IN: Westland, Nelson
HEAVY RAIN FOR WESTLAND AND NORTHWEST NELSON
An active front, preceded by strong to gale northerlies, is expected
to move eastwards across the South Island during Saturday. This front
will bring rain to the west and north of the South Island, with the
heaviest falls likely in Westland where up to 150mm of rain is
expected in the ranges south of Otira, and for the ranges of
northwest Nelson where 100mm of rain is possible.
People are advised this rainfall may cause slips and surface
flooding, and rivers and streams may rise rapdily.
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HEAVY RAIN WARNING
AREA/S AFFECTED: WESTLAND SOUTH OF OTIRA
Heavy rain is expected to ease early Saturday afternoon. In the 17
hours from 9pm Friday to 2pm Saturday, expect 100 to 150mm of rain to
accumulate in the ranges, with 60 to 90mm of rain nearer the coast.
Peak intensities of 15 to 20mm per hour in the ranges Saturday
morning and early afternoon.
FREEZING LEVEL: About 2000 metres.
AREA/S AFFECTED: THE RANGES OF NORTHWEST NELSON
Heavy rain is expected from Saturday morning. In the 12 hours from
9am to 9pm Saturday, expect 70 to 100mm of rain to accumulate. Peak
intensities of 15 to 20mm per hour Saturday afternoon and evening.
FREEZING LEVEL: About 2400 metres.
NEXT SEVERE WEATHER WARNING WILL BE ISSUED AT OR BEFORE
9:00am Saturday 29-Aug-2015
Forecast prepared by: Sarah Garlick
For further information after 9pm contact Duty Forecaster Erick
A service provided through a contract with the Crown
Short Range Forecast
Northland, Auckland, Coromandel Peninsula and Bay of Plenty: Mainly fine. Few showers developing this evening.
Waikato to Wellington also central high country: Cloud increasing. Rain spreading north this afternoon and evening, with heavy falls about Mt Taranaki.
Gisborne to Wairarapa: High cloud increasing. Scattered rain developing this evening in Wairarapa.
Marlborough, Nelson: Rain developing this morning in Nelson and northern Marlborough, heavy for a time and scattered falls spreading elsewhere, clearing later.
Buller to Fiordland: Rain, heavy at times, gradually easing from the south.
Canterbury, Otago and Southland: Cloudy, with a few spots of rain clearing south Canterbury southwards this morning and elsewhere later.
Chatham Islands: Cloud increasing.
Sunday: North Island, rain easing to a few showers from the south. South Island, occasional rain or drizzle in most places, but clearing in the south.
Monday: North Island, rain spreading to most places, but a few showers across Kapiti and Wellington. South Island, fine in the west, and rain or drizzle at times in the east.
Tuesday: North Island, periods of rain, with some heavy falls,easing to showers across Auckland and Northland later. South Island, rain developing in the east from Canterbury northward, and increasing cloudy periods elsewhere.
Chatham Islands: On Sunday, patchy drizzle turning to showers, as fresh northerlies change strong southerly. Showery southerlies on Monday. Becoming fine with northerlies on Tuesday.