SEVERE WEATHER WARNING.
ISSUED BY MetService AT 8:59am 20-Dec-2014
URGENT - IMMEDIATE BROADCAST IN: Westland, Taranaki
A PERIOD OF HEAVY RAIN FOR THE RANGES OF WESTLAND AND MOUNT TARANAKI
A complex trough is moving across the South Island today, preceded by
a moist northerly flow. Heavy rain is expected in Westland through
much of today (Saturday), with the heaviest falls about the ranges,
where a further 130 to 180mm is likely.
Rain is expected to spread across the North Island later today, with
heavy falls likely in many areas. The largest accumulations are
expected about Mount Taranaki, where 100mm could fall in a 12 hour
People, especially trampers, are warned to look out for rapidly
rising rivers and streams. Surface flooding, slips and hazardous
driving conditions are also likely during this time.
FOR THE LATEST WEATHER AND FORECAST CHARTS PLEASE GO TO
MORE DETAILED INFORMATION FOR EMERGENCY MANAGERS AND TECHNICAL USERS
HEAVY RAIN WARNING
AREA/S AFFECTED: WESTLAND SOUTH OF OTIRA
Heavy rain is expected to ease from the south this evening. In the 15
hours from 9am to midnight Saturday, expect a further 100 to 130mm to
accumulate about the ranges, with 180mm possible about higher slopes
south of Whataroa. During the same time, a further 50 to 70mm of rain
is likely nearer the coast. Rainfall rates about the ranges could
reach 25mm per hour at times, especially in possible thunderstorms.
FREEZING LEVEL: 3000 metres
AREA/S AFFECTED: MOUNT TARANAKI
Rain is expected to become heavy this afternoon, then ease early
Sunday morning. In the 12 hours from 3pm Saturday until 3am Sunday,
expect 70 to 100mm of rain. Rainfall rates could reach 25mm per hour
for a time.
NEXT SEVERE WEATHER WARNING WILL BE ISSUED AT OR BEFORE
9:00pm Saturday 20-Dec-2014
Forecast prepared by: Rochelle Fleming
For further information after 1.30pm Saturday December 20th contact
Duty Forecaster Andy Downs
A service provided through a contract with the Crown
Short Range Forecast
Northland, Auckland, Coromandel: Showers turning to rain this evening, heavy falls overnight. Easing to a few showers tomorrow morning.
Waikato to Wellington, including Bay of Plenty, Taupo, Taihape: Rain spreading eastwards this afternoon and evening, with heavy falls. Easing to a few showers overnight, and clearing in Wellington apart showers tomorrow evening.
Gisborne, Hawkes Bay, Wairarapa: Mostly fine, however brief rain overnight tonight, and showers for Hawkes Bay tomorrow afternoon.
Nelson, Marlborough Sounds: Cloudy, rain developing this evening, with heavy falls. Clearing overnight.
Rest of Marlborough and Canterbury: Mainly fine today, however rain about the ranges. A few showers developing tomorrow, chiefly inland from afternoon.
Buller, Westland, Fiordland: Periods of rain, with heavy falls. Rain easing to showers tomorrow morning, then clearing from the south.
Otago, Southland: Scattered rain clearing tomorrow morning, however a few showers for coastal Southland and North Otago later tomorrow.
Chatham Islands: Drizzle, clearing later tomorrow.
Monday: North Island, a few showers in the south and east. Mainly fine elsewhere. South Island, fine or becoming fine in the north and east. A few showers in the west, and rain in Fiordland.
Tuesday: North Island, scattered showers, mainly north of Auckland and about the eastern ranges. South Island, rain in the far south clearing. Elsewhere, mainly fine, afternoon and evening showers about the ranges.
Wednesday: North Island, mainly fine in the east. Cloudy periods and a few showers elsewhere. South Island, mainly fine. Isolated afternoon and showers possible about Otago, and patchy drizzle about the fiords.
Chatham Islands: Cloudy periods on Monday and Tuesday. Winds changing southwest early Monday morning. A few showers on Wednesday and southwesterlies dying out.