SEVERE WEATHER WARNING.
ISSUED BY MetService AT 6:21pm 21-Sep-2014
URGENT - IMMEDIATE BROADCAST IN: Wairarapa, Wellington, Hawkes Bay,
Gisborne, Northland, Auckland, Taihape
SEVERE SOUTH OR SOUTHWEST GALES ON MONDAY FOR EASTERN COASTS OF THE
NORTH ISLAND, ALSO WELLINGTON, AUCKLAND AND NORTHLAND. PERIOD OF
HEAVY SNOW FOR CENTRAL PLATEAU ON MONDAY.
A strong cold south to southwest flow spreads over the country on
Monday. Gales will affect eastern coasts of both Islands, also
central New Zealand and the upper North Island. The strongest winds
are expected in Wellington, about the coasts of Wairarapa, Hawkes Bay
and Gisborne, 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 and Northland.
For the central North Island, a period of snow is expected on Monday,
with the snow level gradually lowering to near 500 or 600 metres
during the day. This warning covers higher parts of Taihape and
Tongariro National Park, where 20cm or more could accumulate above
1000 metres with 10 to 15cm down to 800 metres during Monday morning
and afternoon. This snow is likely to affect many higher roads around
the central plateau and may cause disruptions. Motorists are advised
to check the status of roads before travelling.
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HEAVY SNOW WARNING
AREA/S AFFECTED: TAIHAPE AND TONGARIRO NATIONAL PARK
Snow is expected from early Monday morning, with the snow level
gradually lowering to 500 or 600 metres during the day. In a 12 hour
period from early morning to late afternoon, 20cm or more may
accumulate above 1000 metres, with 10 to 15cm down to 800 metres
affecting higher roads in the area.
STRONG WIND WARNING
AREA/S AFFECTED: WELLINGTON AND COASTAL WAIRARAPA
Southerly gales are expected to develop Monday morning. Between about
10am and 6pm Monday, winds should rise to severe gale with gusts of
120 km/h 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 in the evening,
and in Gisborne at night.
AREA/S AFFECTED: AUCKLAND AND NORTHLAND
Southwest gales are expected to develop early Monday morning. From
about 9am to 3pm, winds may reach severe gale with gusts of 120km/h
in exposed places.
NEXT SEVERE WEATHER WARNING WILL BE ISSUED AT OR BEFORE
9:00am Monday 22-Sep-2014
Forecast prepared by: Chris Noble
A service provided through a contract with the Crown
Short Range Forecast
Northland to northern Taranaki, including Coromandel and Bay of Plenty : Showers, a few heavy and possibly thundery in the west tomorrow morning then clearing north of Waikato in the afternoon. Gale westerlies at times about and north of Waikato tomorrow.
Southern Taranaki and Taihape to Kapiti: Showers developing this evening, possibly thundery in the west in the morning with snow to 600 metres. Becoming fine tomorrow afternoon.
Gisborne to Wellington: Mainly fine today but evening showers north of Gisborne. Gale southerlies and widespread showers tomorrow, some heavy, with afternoon thunderstorms possible north of Napier.
Nelson and Buller to Fiordland: Rain, clearing in the morning. A few thunderstorms possible north of Hokitika.
Marlborough and Canterbury: Isolated showers, becoming widespread tomorrow with snow to 300 metres, clearing later.
Southland and Otago: Rain spreading north, with snow to 200 metres in the morning, clearing in the afternoon.
Chatham Islands: Occasional showers.
Tuesday: North Island, Fine, but morning showers in east. Late cloud in the west. South Island, Occasional showers in south and west, fine elsewhere.
Wednesday: North Island, Mainly fine, but morning drizzle in west. South Island, Fine in east. Morning showers in south and west, cloudy periods in west.
Thursday: North Island, Mainly fine, Cloudy in the west. South Island, High cloud in the east, a few showers in the west and south, rain in Fiordland later.
Friday: North Island, High cloud in the east, cloud in the west with the odd shower developing later. South Island, High cloud in the east, occasional rain in the south, a few showers in the west, turning to rain later.
Chatham Islands: Strong southwesterlies, and occasional showers on Tuesday and Wednesday. Southwesterlies easing and tending northwest on Thursday, with fine spells. A strong southwest change on Friday brings a few more showers.