SEVERE WEATHER WARNING.
ISSUED BY MetService AT 8:55pm 06-Mar-2015
URGENT - IMMEDIATE BROADCAST IN: Westland, Nelson, Buller, Otago,
BURST OF HEAVY RAIN FOR WESTLAND, BULLER AND THE NORTHWEST NELSON
RANGES SATURDAY, ALSO SIGNIFICANT RAIN ABOUT EASTERN OTAGO AND
NORTHERLY GALES FOR WELLINGTON.
An active front, associated with a deep low, is expected to pass east
over the country on Saturday bringing a burst of heavy rain and
thunderstorms to many western places, especially about central areas.
Warning amounts of rain are expected about Westland south of Otira
during Saturday morning, then about Buller and the northwest Nelson
Ranges, where 80 to 120mm is expected to accumulate.In addition,
steady rain is expected about Dunedin and Clutha during Saturday
afternoon and evening, is likely to bring significant accumulations
to the area, with 40 to 60mm expected in 12 hours.
People should be aware that locally heavy rain and thunderstorms
could cause streams and rivers to rise rapidly, surface flooding and
hazardous driving conditions.
Northerly gales with the low and front are likely to be severe at
times about Wellington during Saturday, with gusts of 120km/h in
exposed places. Winds of this strength have the potential to bring
down trees, powerlines and make driving hazardous for motorcycles and
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HEAVY RAIN WARNING
AREA/S AFFECTED: WESTLAND SOUTH OF OTIRA
Heavy rain is expected to return for a time Saturday morning. In the
9 hours from 3am to midday Saturday, expect 90 to 120mm to accumulate
about the ranges with 60 to 80mm near the coast. Peak intensities of
25 to 40mm/hr in thunderstorms.
FREEZING LEVEL: 2300 metres
AREA/S AFFECTED: BULLER AND THE NORTHWEST NELSON RANGES
Bursts of heavy rain and thunderstorms are expected from Saturday
morning. In the 18 hours from 6am to 12pm Saturday expect 80 to 110mm
to accumulate.Peak intensities 25 to 40mm per hour in thunderstorms.
FREEZING LEVEL: Lowering to 2400 metres Saturday morning.
AREA/S AFFECTED: DUNEDIN AND CLUTHA
Steady southeasterly rain is expected from late Saturday afternoon.
In the 12 hours from 3pm Saturday to 3am Sunday expect 40 to 60mm to
accumulate, especially about the inland ranges.
FREEZING LEVEL: About 2400 metres, lowering to 2100 metres Sunday
STRONG WIND WARNING
AREA/S AFFECTED: WELLINGTON
Northerlies are expected to rise to gale Saturday morning, then to
severe gale gusting 120km/h in exposed places from late morning until
NEXT SEVERE WEATHER WARNING WILL BE ISSUED AT OR BEFORE
9:00am Saturday 07-Mar-2015
Forecast prepared by: Leigh Matheson
For further information after 9pm contact Duty Forecaster Heath
Gullery or Neal Osborne
A service provided through a contract with the Crown
Short Range Forecast
Northland to Wellington, including Coromandel, Bay of Plenty and the central high country: Rain spreading east during the day, heavy with squally thunderstorms south of Auckland from afternoon, easing to isolated showers in the north this evening.
Gisborne to Wairarapa: High cloud this morning. Scattered showers spreading north this afternoon.
Marlborough, Nelson, Buller, Westland, Fiordland, also Canterbury High Country: Rain with heavy thundery falls, easing in Fiordland this morning and elsewhere this evening.
The remainder of Canterbury, Otago and Southland: Scattered showers developing this morning, turning to rain in Otago and Southland by afternoon.
Chatham Islands: Cloudy with showers, turning to rain this evening.
Sunday: North Island, A few morning showers for most places then fine spells. South Island, Showers clearing east of the divide in the morning. However,isolated afternoon showers about inland Canterbury.
Monday: North Island, showers developing in the west from Taranaki to Wellington. Mainly fine elsewhere. South Island, a few showers in the south and west. Mainly fine elsewhere.
Tuesday: North Island, mainly fine apart from a few showers in the west, south of Auckland. South Island, Showers for most places, becoming heavy in the west,but remaining fine in the north.
Chatham Islands: Rain, briefly heavy with strong northerlies, changing westerly and easing to showers Sunday morning. Showers clearing on Monday and westerlies easing. Fine spells on Tuesday and northerlies developing.