Weather Warning


SEVERE WEATHER WARNING.
ISSUED BY MetService AT 8:16pm 27-May-2016
URGENT - IMMEDIATE BROADCAST IN: Taranaki, Nelson, Buller,
Marlborough, Northland, Auckland, Taihape, Wanganui, Manawatu

HEAVY RAIN FOR CENTRAL NEW ZEALAND AND SEVERE NORTHERLY GALES FOR
AUCKLAND, NORTHLAND, TARANAKI, WANGANUI, TAIHAPE AND NORTHERN
MANAWATU TONIGHT THROUGH SATURDAY MORNING.
A large low pressure system is expected to approach central New
Zealand from the Tasman Sea tonight (Friday), then move across the
country away to the southeast on Saturday, followed by a trough on
Sunday. The low should deliver rain to many parts of the country,
with the heaviest falls expected about Mount Taranaki, Buller, Nelson
and northwestern parts of Marlborough from Friday night to Saturday
morning, although for Buller rain may continue into the afternoon. 70
to 100mm is expected for most of these areas, but 130mm is possible
about the ranges of western Nelson.
People, especially trampers, are advised that this amount of rain
could cause rivers and streams to rise rapidly, with surface flooding
and slips possible.
In addition, northerly gales are expected to be severe for a time
Saturday morning about exposed parts of Northland, Auckland,
Taranaki, Wanganui, Taihape, and Manawatu with gusts of 120 km/h or
more possible. Winds of this strength have the potential to damage
trees, powerlines and unsecured structures, as well as make driving
hazardous for high-sided vehicles and motorcycles.
Note, a separate warning is in force for snow about higher parts of
Canterbury and Otago.
FOR THE LATEST WEATHER AND FORECAST CHARTS PLEASE GO TO
http://metservice.com
MORE DETAILED INFORMATION FOR EMERGENCY MANAGERS AND TECHNICAL USERS
FOLLOWS.
______________________
HEAVY RAIN WARNING
______________________
AREA/S AFFECTED: MOUNT TARANAKI
FORECAST:
Periods of heavy rain expected from Friday evening through to
Saturday morning. In the 10 hours from 10pm Friday to 8am Saturday,
expect 80 to 100mm to accumulate. Peak intensities of 30mm per hour.
Further rain is expected through the rest of Saturday and another 30
to 50mm may accumulate by midnight.
AREA/S AFFECTED: THE RANGES OF WESTERN NELSON
FORECAST:
A burst of heavy rain is expected from Friday evening through to
Saturday morning. In the 12 hours between 9pm Friday and 9am Saturday
expect 80 to 130mm accumulate. Peak intensities 15 to 25mm per hour.
Further showers are expected through the rest of Saturday and another
40 to 60mm may accumulate by midnight.
FREEZING LEVEL: 2500 metres.
AREA/S AFFECTED: BULLER
FORECAST:
Periods of heavy rain expected Saturday morning and early afternoon.
In the 15 hours from midnight Friday to 3pm Saturday, expect 80 to
100mm to accumulate, especially about the ranges. Peak intensities of
15 mm per hour. Further showers are expected through the rest of
Saturday.
FREEZING LEVEL: 2500 metres.
AREA/S AFFECTED: RICHMOND AND BRYANT RANGES AND ALSO THE RAI VALLEY
FORECAST:
Periods of heavy rain expected from late Friday evening through to
Saturday morning. In the 10 hours from 10pm Friday to 8am Saturday,
expect 75 to 100mm to accumulate. Peak intensities 15 to 25mm per
hour.
FREEZING LEVEL: 2500 metres.
_______________________
STRONG WIND WARNING
_______________________
AREA/S AFFECTED: NORTHLAND AND AUCKLAND
FORECAST:
Northerly gales are expected to become severe in exposed places for a
time Saturday morning, with gusts of 120 km/h or more. Note, north to
northwest gales could become severe again Saturday night and early
Sunday morning, and a Watch is in force for this.
AREA/S AFFECTED: TARANAKI, WANGANUI, TAIHAPE, NORTHERN MANAWATU
FORECAST:
Northerly winds expected to reach severe gale gusting 140 km/h or
more in exposed places early Saturday morning and then should ease
mid morning. Note, north to northwest gales could become severe again
Saturday night and early Sunday morning, and a Watch is in force for
this.
NEXT SEVERE WEATHER WARNING WILL BE ISSUED AT OR BEFORE
9:00am Saturday 28-May-2016
Forecast prepared by: William Nepe
For further information after 9pm contact Duty Forecaster Stephen
Glassey or Andy Downs
A service provided through a contract with the Crown

Short Range Forecast

201605292359

Northland to Waikato, including Coromandel and Bay of Plenty: Showers, some heavy and thundery in the west. Rain, with heavy and thundery falls spreading east tomorrow morning, easing to a few showers in the evening. Northwest gales in exposed places, easing later tomorrow.
Gisborne and Hawkes Bay: Rain clearing this afternoon, but returning to the ranges tomorrow and scattered falls spreading east.
Waitomo to Wellington, including the central high country, also Wairarapa, Nelson and Marlborough: Showers, some heavy with squally thunderstorms and hail possible until tomorrow morning.
Buller and Westland: Rain, with heavy and thundery falls, easing to showers this evening and clearing tomorrow.
Fiordland: Mostly fine.
Canterbury and Otago, not including Clutha: Scattered rain, falling as snow above 600 metres until this evening, gradually clearing tomorrow but remaining mostly cloudy.
Clutha and Southland: Scattered showers.
Chatham Islands: Periods of rain.

Extended Forecast

201605312359

Monday: North Island, occasional showers in the west. Mostly fine in the east and south but showers developing from afternoon, however, remaining dry for Hawkes Bay and Gisborne. South Island, showers spreading to most places, but fine for southern Westland and northern Fiordland.
Tuesday: North Island, showers, clearing for Bay of Plenty and Rotorua. South Island, occasional showers in the east and south, with snow to 400 metres in the south. Mostly fine in central and western areas but showers spreading there during the afternoon and evening.
Wednesday: North Island, rain in the north, possibly heavy, easing later.Showers in the south, clearing for western areas. South Island, fine in the west. Cloudy in the east, with showers retreating to the far south and the east coast.
Chatham Islands: Occasional showers Monday and Tuesday, heavy at times, clearing Wednesday but remaining cloudy. Gale westerlies, turning gale southerly on Tuesday, then easing Wednesday.

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