SEVERE WEATHER WARNING.
ISSUED BY MetService AT 8:41am 22-Sep-2014
URGENT - IMMEDIATE BROADCAST IN: Wairarapa, Wellington, Hawkes Bay,
Gisborne, Northland, Auckland, Canterbury, Taihape
SEVERE SOUTH OR SOUTHWEST GALES TODAY (MONDAY) FOR BANKS PENINSULA,
EASTERN COASTS OF THE NORTH ISLAND, ALSO WELLINGTON, AUCKLAND AND
NORTHLAND. PERIOD OF HEAVY SNOW FOR THE CENTRAL PLATEAU TODAY.
A strong cold south to southwest flow has spread over the country and
is expected to slowly ease late afternoon and this evening. Gales are
affecting eastern coasts of both Islands, also central New Zealand
and the upper North Island. The strongest winds are likely about
higher parts of Banks Peninsula, in Wellington, about the coasts of
Wairarapa, Hawkes Bay and Gisborne, and also over Auckland and
Northland. In all these areas, severe gales are possible in exposed
places with gusts reaching 120km/h. These winds should peak late
morning to early afternoon about central New Zealand and the upper
North Island, but may not peak until late afternoon in the east of
the North Island. Gusts of this strength have the potential to damage
trees, powerlines and insecure structures and could make driving
difficult. Additionally, large waves are likely to affect southern
coasts of Wellington and Wairarapa, also western coasts of Auckland
Snow is falling on the central North Island high country. The snow
level should lower to 500 or 600 metres this morning. This warning
covers higher parts of Taihape and Tongariro National Park, where a
further 15cm or more of snow could accumulate above 1000 metres with
10 to 15cm down to 800 metres during this morning and afternoon. This
snow is likely to affect many higher roads around the Central Plateau
and may cause disruptions. Some light snow showers will continue
until early Tuesday morning before clearing completely. Motorists are
advised to check the status of roads before travelling.
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MORE DETAILED INFORMATION FOR EMERGENCY MANAGERS AND TECHNICAL USERS
HEAVY SNOW WARNING
AREA/S AFFECTED: TAIHAPE AND TONGARIRO NATIONAL PARK
Snow is currently falling above 800 metres and the snow level is
expected to lower to 500 or 600 metres by mid-afternoon. Between 9am
and 6pm Monday a further 15cm or more of snow is likely to accumulate
above 1000 metres, with 10 to 15cm down to 800 metres affecting
higher roads in the area. Further light falls of snow are likely
until early Tuesday morning.
STRONG WIND WARNING
AREA/S AFFECTED: WELLINGTON AND COASTAL WAIRARAPA
Southerly gales should ease gradually late this afternoon and during
the evening. Between 9am and 6pm Monday, severe gale southerlies with
gusts of 120 km/h are likely in exposed places.
AREA/S AFFECTED: THE COASTS OF HAWKES BAY AND GISBORNE
South to southwest gales are expected to develop late Monday morning
or early afternoon. From around midday in Hawkes Bay and from 2pm in
Gisborne, winds may rise to severe gale with gusts of 120km/h in
exposed places. Conditions should ease in Hawkes Bay this evening,
and in Gisborne at night.
AREA/S AFFECTED: AUCKLAND AND NORTHLAND
Southwest gales should slowly ease this afternoon and evening. From
about 9am to 3pm, winds may reach severe gale with gusts of 120km/h
in exposed places.
AREA/S AFFECTED: BANKS PENINSULA
Gale southwesterlies are expected to ease slowly this afternoon.
Between 9am and midday Monday, severe gale winds with gusts of 120
km/h are likely about the exposed higher parts of Banks Peninsula.
NEXT SEVERE WEATHER WARNING WILL BE ISSUED AT OR BEFORE
9:00pm Monday 22-Sep-2014
Forecast prepared by: Allister Gorman
A service provided through a contract with the Crown
Short Range Forecast
Northland and Auckland: Showers, some heavy and squally, and southwest gales, severe in places, easing this evening. Fine tomorrow.
Waikato to Taranaki. Taumarunui, Taupo, Coromandel and Bay of Plenty: Showers and southwest gales easing this afternoon. Fine tomorrow.
The remainder of the North Island: Squally showers, possibly thundery in the east, and snow above 500 metres. Southerly gale, severe in areas, easing from evening. Mainly fine tomorrow.
Buller, Westland and Fiordland: Fine today, occasional light rain tomorrow.
Nelson and northern Marlborough: Fine.
The remainder of Marlborough and Canterbury: Southerly gale, severe in exposed coastal areas at first and showers with snow above 300 metres. Fine tomorrow.
Otago and Southland: Remaining showers clearing this afternoon. Mostly cloudy tomorrow, a few spots of rain in Southland and south Otago.
Chatham Islands: A few showers this evening, and again tomorrow evening.
Wednesday: North Island, mainly fine, but patchy morning drizzle in west. South Island, morning showers in south and west, fine elsewhere.
Thursday: North Island, mainly fine, cloudy periods in the west. South Island, high cloud in the east, a few showers in the west, rain in Fiordland later.
Friday: North Island, brief rain with a weakening southerly change, cloudy periods further north. South Island, rain in the west and a few spots in the east, clearing and generally becoming fine.
Chatham Islands: Strong southwesterlies, and occasional showers on Wednesday. Southwesterlies easing and tending northwest on Thursday, with fine spells. A strong southwest change on Friday brings a few more showers.