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SEVERE WEATHER WARNING.
ISSUED BY MetService AT 9:01am 29-Jul-2016
URGENT - IMMEDIATE BROADCAST IN: Auckland, Waikato, Great Barrier
Island, Coromandel Peninsula, Hawkes Bay, Tararua, Wairarapa, Kapiti
Horowhenua, Wellington, Fiordland, Southland
SEVERE WESTERLY GALES FOR PARTS OF THE NORTH ISLAND TODAY AND
SATURDAY. HEAVY RAIN FOR THE TARARUA RANGE SATURDAY. HEAVY SNOW FOR
FIORDLAND AND SOUTHLAND OVERNIGHT SATURDAY TO SUNDAY.
A strong, unstable westerly flow covers the North Island. Westerly
gales are expected over much of the North Island today (Friday),
severe about exposed parts of Auckland, Great Barrier Island, the
Coromandel Peninsula and Waikato, as well as central Hawkes Bay and
the Tararua District until early Friday afternoon. Gusts likely to
120km/h in exposed places.
On Saturday, a cold front moves rapidly north over the country,
bringing further westerly gales to parts of the North Island and
upper South Island. Also, becoming colder about the lower South
Island, with snow to low levels.
Severe westerly gales are expected to return to central Hawkes Bay
and the Tararua District for a time Saturday evening and Sunday
morning, gusting 120km/h in exposed places.
Heavy rain is expected to affect the Tararua Range during Saturday,
with up to 90mm likely over a 9 hour period.
In addition, heavy snow is expected about Fiordland and Southland
from Saturday evening to Sunday morning, with 10 to 20cm expected
above 200 metres.
Please note, that heavy snow can cause major distruption to traffic,
with blizzard conditions likely in exposed areas.
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MORE DETAILED INFORMATION FOR EMERGENCY MANAGERS AND TECHNICAL USERS
HEAVY RAIN WARNING
AREA/S AFFECTED: THE TARARUA RANGE
A period of heavy rain is expected Saturday afternoon and early
evening. In the 9 hours from midday to 9pm Saturday expect 70 to 90mm
to accumulate. Peak intensities 10 to 15mm per hour.
HEAVY SNOW WARNING
AREA/S AFFECTED: FIORDLAND AND SOUTHLAND
Showers are expected to turn to snow above 200 metres during Saturday
afternoon and evening, then to near sea level at night, especially in
heavier showers. In the 12 hours from 9pm Saturday to 9am Sunday
expect 10 to 20cm to accumulate above 200 metres, especially about
Southern Fiordland, with lesser amounts to near sea level.
FREEZING LEVEL: Lowering to 500 metres Saturday evening, but to 300
metres in heavier showers.
STRONG WIND WARNING
AREA/S AFFECTED: AUCKLAND (INCLUDING GREAT BARRIER ISLAND), WAIKATO
AND THE COROMANDEL PENINSULA
Severe westerly gales, with gusts of 120 km/h in exposed places,
possibly more in squally thunderstorms. Winds easing early Friday
AREA/S AFFECTED: HAWKES BAY SOUTH OF NAPIER AND THE TARARUA DISTRICT
Severe westerly gales, gusting 120km/h in exposed places, are
expected to ease early afternoon. However, severe westerly gales are
expected to return Saturday evening, gusting 120km/h in exposed
places. Winds easing again Sunday morning.
WARNINGS NO LONGER IN FORCE
STRONG WIND WARNINGS HAVE BEEN LIFTED FOR: WAIRARAPA
NEXT SEVERE WEATHER WARNING WILL BE ISSUED AT OR BEFORE
9:00pm Friday 29-Jul-2016
Forecast prepared by: Leigh Matheson
A service provided through a contract with the Crown
Short Range Forecast
Northland to Whanganui, including Bay of Plenty and the central high country: Showers and westerly gales easing today. Rain or showers at times tomorrow, with thunderstorms in the west from afternoon. Snow to 700 metres about Taumarunui and Taihape tomorrow night, affecting higher roads.
Gisborne and Hawkes Bay: Mostly fine today. Showers later tomorrow.
Manawatu to Wellington, also Wairarapa, Marlborough and Nelson: Mostly fine today, but a few afternoon showers. A period of rain tomorrow, with some heavy falls and thunderstorms.
Canterbury: Mainly fine today. Showers developing tomorrow afternoon.
Buller and Westland: Remaining showers clearing today. Rain tomorrow, with heavy falls and thunderstorms. Snow to 500 metres at night.
Otago, Southland and Fiordland: Isolated showers, clearing today. Rain or showers tomorrow, with thunderstorms and hail in the south. Snow lowering to 200 metres tomorrow evening.
Chatham Islands: Rain today, and southwesterly gales this evening. Showers tomorrow.
Sunday: Showers for western and central parts of the North Island, some heavy at first with snow affecting higher parts of Hawkes Bay, Taihape and Taumarunui. Showers for the west and south of the South Island, with morning snow to near sea level in the far south. Elsewhere, mostly fine.
Monday: North Island, a period of rain and northwesterlies for western areas, followed by showers in the west and south. South Island, morning rain in the west, then a few showers for most places as winds turn southwest.
Tuesday: North Island, a showery start to the day for most places, but clearing later and southwest winds easing. South Island, fine apart from early showers in the south and east,and some late rain for Fiordland.
Chatham Islands: Occasional rain and westerly gales on Sunday, gradually easing during Monday. On Tuesday, southwesterlies and a few showers.