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Weather Warning


SEVERE WEATHER WARNING.
ISSUED BY MetService AT 8:25pm 27-Jul-2016
URGENT - IMMEDIATE BROADCAST IN: Fiordland, Westland, Tararua,
Wairarapa, Manawatu, Kapiti Horowhenua, Wellington

HEAVY RAIN FOR THE WEST OF THE SOUTH ISLAND AND TARARUA RANGE
OVERNIGHT AND THURSDAY MORNING. SEVERE GALE NORTHWESTERLIES FOR
WELLINGTON THURSDAY MORNING.
A front is expected to cross the South Island overnight and central
New Zealand Thursday morning. A period of heavy rain is forecast for
the west of the South Island and also the Tararua Range where 60 to
90mm is possible in 12 hours or less. Rain of this intensity will
cause streams and rivers to rise rapidly and may cause slips, surface
flooding and hazardous driving conditions.
Also, severe gale northwest winds are forecast for Wellington
overnight and Thursday morning. Winds of this strength may damage
trees, powerlines and unsecured structures, and also cause hazardous
driving conditions, particularly for high-sided vehicles and
motorbikes.
FOR THE LATEST WEATHER AND FORECAST CHARTS PLEASE GO TO
http://metservice.com
MORE DETAILED INFORMATION FOR EMERGENCY MANAGERS AND TECHNICAL USERS
FOLLOWS.
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HEAVY RAIN WARNING
______________________
AREA/S AFFECTED: RANGES OF FIORDLAND
FORECAST:
Heavy rain is expected to ease Thursday morning. In the 7 hours
between 9pm today to 4am Thursday, expect a further 60 to 80mm of
rain, on top of what has already fallen. Heaviest falls 20 to 30mm
per hour likely between 11pm and 2am, especially in possible
thunderstorms.
FREEZING LEVEL: 1400 metres.
AREA/S AFFECTED: RANGES OF WESTLAND SOUTH OF OTIRA
FORECAST:
Heavy rain and thunderstorms expected to develop this evening and
ease Thursday morning. In the 12 hours from 9pm Wednesday to 9am
Thursday 70 to 90mm is forecast. Heaviest falls 20 to 30mm per hour
likely between midnight and 3am.
FREEZING LEVEL: 1600 metres.
AREA/S AFFECTED: TARARUA RANGE
FORECAST:
Rain is expected to become heavy Thursday morning. In 8 hours from
6am to 2pm Thursday 60 to 90mm is forecast. Heaviest falls may reach
20mm per hour, especially in possible thunderstorms.
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STRONG WIND WARNING
_______________________
AREA/S AFFECTED: WELLINGTON
FORECAST:
Northwest winds are forecast to reach severe gale force with gusts
120km/h or more in exposed places from around midnight Wednesday to
mid-morning Thursday.
NEXT SEVERE WEATHER WARNING WILL BE ISSUED AT OR BEFORE
9:00am Thursday 28-Jul-2016
Forecast prepared by: Rochelle Fleming
For further information after 9pm Wednesday July 27th contact Duty
Forecaster Andy Downs
A service provided through a contract with the Crown

Short Range Forecast

201607282359

Northland, Auckland, Coromandel and Bay of Plenty: A few showers turning to rain for a time during the afternoon, briefly heavy.
Gisborne and Hawkes Bay: High cloud, with a few showers spreading from the ranges.
Waikato to Wellington, including the central high country, also Wairarapa: Periods of rain, heavy at times with possible squally thunderstorms. Severe northwest gales in Wellington this morning.
Western Nelson, Buller, Westland, Fiordland and Stewart Island: Periods of rain, heavy at times, with squally thunderstorms and hail. Snow lowering to 400 metres in Fiordland Thursday night.
Remainder of Nelson and Marlborough: Occasional showers.
Canterbury, Otago and Southland: High cloud, with rain in the west and a few spots spreading further east. Snow lowering to 400 metres in Southland and Otago overnight Thursday into Friday.
Chatham Islands: Occasional rain.

Extended Forecast

201607302359

Friday: Showers in the west and south, may turn to rain for a time, fine in the east. Snow possible down to 200 metres at first in the far south.
Saturday: North Island, a period of rain for most places with possible heavy falls in the west. South Island, rain with some heavy and possibly thundery falls in the west. Showers elsewhere, with snow to low levels in the far south.
Sunday: Showers in the west and south, mostly fine in the east. Snow to low levels in the far south.
Chatham Islands: Periods of rain, and westerlies rising to gale for a time on Friday. Showers, mainly morning and evening on Saturday as southwest winds turn strong northwest. On Sunday, rain at times with gale southwesterlies.

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