Weather Warning


SEVERE WEATHER WARNING.
ISSUED BY MetService AT 9:02pm 24-May-2016
URGENT - IMMEDIATE BROADCAST IN: Bay Of Plenty, Taranaki, Tararua,
Wairarapa, Kapiti Horowhenua, Buller

PERIODS OF HEAVY RAIN FOR EASTERN BAY OF PLENTY, MOUNT TARANAKI, THE
TARARUA RANGE AND BULLER TONIGHT AND DURING WEDNESDAY
A complex trough is moving eastwards across New Zealand tonight and
Wednesday, with several bands of heavy rain and possible squally
thunderstorms expected to affect central and northern New Zealand
during this time. The largest rainfall accumulations are likely to be
about the ranges of eastern Bay of Plenty, Mt Taranaki, the Tararua
Range and Buller, where 100 to 140mm could fall.
People, especially trampers, are advised that this amount of rain
could cause rivers and streams to rise rapidly, with surface flooding
and slips possible.
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MORE DETAILED INFORMATION FOR EMERGENCY MANAGERS AND TECHNICAL USERS
FOLLOWS.
______________________
HEAVY RAIN WARNING
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AREA/S AFFECTED: THE RANGES OF EASTERN BAY OF PLENTY
FORECAST:
Periods of heavy rain are expected tonight and during Wednesday. In
the 24 hours from 9pm Tuesday to 9pm Wednesday expect 100 to 120mm to
accumulate. Peak intensities of 15 to 25mm per hour this evening and
again from late tomorrow afternoon, with possible thunderstorms.
AREA/S AFFECTED: MT TARANAKI
FORECAST:
Periods of heavy rain are expected tonight and during Wednesday. In
the 21 hours from 9pm Tuesday to 6pm Wednesday expect another 100 to
140mm to accumlate, on top of what has already fallen. Peak
intensities of 20 to 30mm per hour, especially in possible
thunderstorms.
AREA/S AFFECTED: TARARUA RANGE
FORECAST:
Periods of heavy rain are expected tonight and during Wednesday. In
the 21 hours between 9pm Tuesday and 6pm Wednesday expect 100 to
140mm to accumulate. Peak intensities of 15 to 25mm per hour,
especially in possible thunderstorms.
AREA/S AFFECTED: BULLER
FORECAST:
Periods of heavy rain are expected tonight and Wednesday morning. In
the 15 hours between 9pm Tuesday and midday Wednesday, expect 80 to
100mm to accumulate, especially about the ranges. Peak intensities of
20mm per hour.
FREEZING LEVEL: 1700 metres.
NEXT SEVERE WEATHER WARNING WILL BE ISSUED AT OR BEFORE
9:00am Wednesday 25-May-2016
Forecast prepared by: Rochelle Fleming
For further information after 9pm Tuesday May 24th contact Duty
Forecaster Hordur Thordarson
A service provided through a contract with the Crown

Short Range Forecast

201605252359

For all of the North Island, except Gisborne and Hawkes Bay: Showers, some heavy with squally thunderstorms and hail, easing this evening.
Gisborne, Hawkes Bay: A few showers.
Marlborough, Nelson and Buller: Showers, with isolated squally thunderstorms and hail, easing this afternoon and clearing in Marlborough and much of Nelson by evening.
Westland: A few showers in the north at first, then spreading everywhere towards evening.
Canterbury: A few showers, clearing this morning and becoming fine.
Otago and Southland excluding Stewart Island: Scattered rain developing about the south coast this morning and spreading north during the afternoon and evening.
Fiordland and Stewart Island: A few showers becoming widespread this afternoon, and some possibly heavy from evening.
Chatham Islands: Occasional showers.

Extended Forecast

201605272359

Thursday: North Island, showers in most places, but mainly fine in the east from Gisborne to Wairarapa. South Island, rain or showers in the south and west, with the odd shower elsewhere.
Friday: A few showers, but rain spreading onto the western North Island and northern South Island at night.
Saturday: North Island, periods of rain spreading eastwards, with some heavy and thundery falls in the west. South Island, rain spreading southwards, some heavy falls possible in the north and east. Mainly fine or becoming mainly fine in Westland and Fiordland.
Chatham Islands: Cloudy periods and a few showers with northwest winds on Thursday. Showers and westerlies on Friday, winds strong for a time. Rain with possible heavy falls developing on Saturday, westerlies turning northerly and possibly rising to gale for a time.

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