SEVERE WEATHER WARNING.
ISSUED BY MetService AT 8:35pm 02-Jul-2015
URGENT - IMMEDIATE BROADCAST IN: Fiordland, Otago, Westland,
Canterbury, Buller, Taranaki, Wairarapa, Wellington
BURST OF HEAVY RAIN FOR THE WEST OF THE SOUTH ISLAND, INCLUDING THE
OTAGO AND CANTERBURY HEADWATERS. SEVERE GALES ABOUT INLAND
CANTERBURY, WELLINGTON AND WAIRARAPA.
A complex trough with embedded fronts is expected to move northeast
over the South Island tonight (Thursday) and Friday morning, and onto
the North Island during Friday afternoon. This trough is expected to
bring a burst of heavy rain to the west of the South Island and
significant spillover into the headwaters of the Otago and Canterbury
lakes and rivers.
Heavy rain may cause rivers and streams to rise rapidly and slips are
possible in vulnerable areas.
In addition, the trough is preceded by strong northwesterlies and
severe gales are expected about inland Canterbury, Wellington and
Wairarapa. Winds of this strength can bring down trees and
powerlines, and make driving hazardous for high-sided vehicles and
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HEAVY RAIN WARNING
AREA/S AFFECTED: FIORDLAND NORTH OF DOUBTFUL SOUND
Heavy rain is expected to ease tonight. In the 4 hours from 9pm
tonight (Thursday) to 1am Friday expect a further 20 to 30mm to
accumulate on top of what has already fallen. Peak intensities of 10
to 15mm per hour.
FREEZING LEVEL: About 1600 metres.
AREA/S AFFECTED: THE HEADWATERS OF THE OTAGO LAKES AND RIVERS
Heavy rain is expected to ease Friday morning. In the 7 hours from
9pm tonight (Thursday) to 4am Friday, expect a further 50 to 70mm to
accumulate on top of what has already fallen within 20km east of the
divide. Peak intensities 15 to 20mm per hour about the divide with
FREEZING LEVEL: 1600 metres, lowering to 1200 metres early Friday
AREA/S AFFECTED: WESTLAND RANGES ABOUT AND SOUTH OF OTIRA
Heavy rain is expected to ease Friday morning. In the 13 hours from
9pm tonight to 10am Friday expect a further 120 to 180mm about higher
parts of the Alps but 50 to 70mm near the coast, on top of what has
already fallen. Peak intensities of 20 to 30mm per hour with possible
FREEZING LEVEL: About 1800 metres, lowering to 1400 metres Friday
AREA/S AFFECTED: THE HEADWATERS OF THE CANTERBURY LAKES AND RIVERS
SOUTH OF ARTHURS PASS
Heavy rain is expected to ease Friday morning. In the 12 hours from
9pm tonight to 9am Friday, expect a further 100 to 150mm near the
divide, and 60 to 90mm with 20km east of the divide, on top of what
has already fallen. Peak intensities 20 to 30mm per hour about the
divide with possible thunderstorms.
FREEZING LEVEL: 1700 metres, lowering to 1400 metres early Friday
AREA/S AFFECTED: WESTLAND NORTH OF OTIRA AND BULLER SOUTH OF THE
Rain is expected to become heavy about the ranges this evening but
ease around noon Friday. In the 12 hours from 1am to 1pm Friday
expect 70 to 100mm to accumulate about the ranges and lesser amounts
near the coast. The heaviest rain is likely to affect the Paparoa
Range. Peak intensities 10 to 15mm per hour late Friday morning.
FREEZING LEVEL: About 1800 metres, lowering to 1500 metres Friday
AREA/S AFFECTED: MOUNT TARANAKI
A period of heavy rain is expected from Friday morning through to
Friday evening. In the 9 hours from 9am to 6pm Friday expect 80 to
120mm to accumulate about the Mountain. Peak intensities 10 to 20mm
per hour late afternoon Friday.
STRONG WIND WARNING
AREA/S AFFECTED: INLAND CANTERBURY
Severe northwest gales, gusting 130km/h in exposed places, especially
north of Lake Tekapo, easing early Friday morning (before dawn).
AREA/S AFFECTED: WELLINGTON AND WAIRARAPA
Northwesterlies are expected to rise to severe gale gusting 130 km/h
in exposed places Friday afternoon, then ease early Friday evening.
NEXT SEVERE WEATHER WARNING WILL BE ISSUED AT OR BEFORE
9:00am Friday 03-Jul-2015
Forecast prepared by: Leigh Matheson
For further information after 9pm Thursday 2 July contact Duty
Forecaster Paul Mallinson or Bill Singh
A service provided through a contract with the Crown
Short Range Forecast
From Northland to Taranaki and Bay of Plenty, including the central high country: Patchy drizzle turning to rain this afternoon with some heavy falls.
Wanganui to Wellington, also Wairarapa: A few showers from Horowhenua to Wellington turning to widespread rain this afternoon, clearing tonight. Northwest gales in Wellington and Wairarapa this afternoon.
Gisborne, Hawkes Bay: Fine at first. Scattered rain developing this evening.
Marlborough, Canterbury: Fine at first apart from rain about the Alps. Scattered rain elsewhere this afternoon or evening.
Nelson, Buller, Westland: Rain with heavy falls, clearing in Westland late morning and elsewhere by evening.
Fiordland: A few showers, snow to 300 metres this morning.
Southland and Otago: Scattered showers with snow to 300 metres in Southland and 400 metres in Clutha, clearing this evening.
Chatham Islands: A few morning showers then rain tonight.
Saturday: North Island, rain in the north, with heavy falls in Bay of Plenty, a few showers elsewhere. South Island, rain or showers in the west and south, with heavy falls in Fiordland, fine with high cloud elsewhere.
Sunday: North Island, a few showers in the north and west, fine spells in the south and rain clearing in the east. South Island, rain or showers in the west and far south, few spots of rain in the east, and fine in the north.
Monday: North Island, a few showers in the north and west, mainly fine elsewhere. South Island, rain or showers in the west and far south, with heavy falls in Fiordland, mainly fine elsewhere.
Chatham Islands: Rain at times on Saturday, and northerlies developing. Rain on Sunday, and winds turning strong westerly. Occasional showers and strong westerlies on Monday.