SEVERE WEATHER WARNING.
ISSUED BY MetService AT 9:04am 02-Aug-2014
URGENT - IMMEDIATE BROADCAST IN: Canterbury, Marlborough, Wellington,
Wairarapa, Taihape, Westland, Otago, Taranaki, Taumarunui, Wanganui,
HEAVY RAIN AND SEVERE GALES FOR MANY SOUTH ISLAND AREAS AND PARTS OF
THE CENTRAL AND LOWER NORTH ISLAND.
A front is expected to move slowly northeast over the South Island
today and the North Island on Sunday. A strong moist northwesterly
flow ahead of this front is expected to bring heavy rain and severe
gales to many areas.
Heavy rain affecting Westland and the Otago and Canterbury
headwaters, is easing today. Heavy rain is also expected for the
Tararua Range, Mt Taranaki and the west of the central North Island
high country including Tongariro National Park until late Sunday
morning. Meanwhile severe northwest gales are expected to affect
exposed parts of inland Canterbury, Marlborough, Wellington,
Wairarapa and Taihape. The winds should ease today in the South
Island but remain strong over the North Island places until Sunday
Wind gusts in exposed areas of Canterbury, Marlborough, Wellington,
Wairarapa and Taihape may reach 130 km/h at times today. In
Canterbury, damaging gusts of 150 km/h are possible for a time.
In the areas affected by the heavy rain, rivers could rise rapidly
and there is the possibility of slips and surface flooding. Severe
gales have the potential to damage trees and powerlines and create
difficult driving conditions, especially for high sided vehicles and
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HEAVY RAIN WARNING
AREA/S AFFECTED: WESTLAND SOUTH OF OTIRA
Heavy rain is expected to continue today. In the 15 hours from 9am to
midnight expect a further 100 to 150mm about the ranges but lesser
amounts near the coast in addition to the rain that has already
accumulated. Peak intensities of 20 to 25mm/hr are likely about the
ranges this morning and afternoon with possible thunderstorms.
FREEZING LEVEL: 2200 metres, lowering to 1200 metres this evening.
AREA/S AFFECTED: HEADWATERS OF THE OTAGO LAKES AND RIVERS
In the 3 hours from 9am to noon today expect a further 20 to 30mm
about the divide, with 10 to 20mm within 20km of the divide in
addition to rain that has already accumulated. Peak intensities of 15
to 20mm/hr about the Divide.
FREEZING LEVEL: About 2000 metres.
AREA/S AFFECTED: HEADWATERS OF THE CANTERBURY LAKES AND RIVERS, ABOUT
AND SOUTH OF ARTHURS PASS
Significant spill-over rain is expected until late today. In the 15
hours from 9am today to midnight expect a further 100 to 150mm to
accumulate about the divide, especially south of the Rakaia River
with 50 to 90mm within 25km east of the divide. Peak intensities of
15 to 25mm/hr are possible near the Divide this morning and
FREEZING LEVEL: About 2200 metres.
AREA/S AFFECTED: TARANAKI
Another burst of heavy rain is expected from noon today till early
Sunday morning. In the 18 hours from noon Saturday to 6am Sunday
expect a further 150 to 200mm in addition to rain that has already
accumulated. Greater amounts, 200 to 300m are possible about the
summit. Note, 60 to 90mm is likely about places nearer the coast
north and west of the Mountain. Peak intensities of 20 to 30mm/hr are
likely about the Mountain, easing overnight.
AREA/S AFFECTED: THE TARARUA RANGE
Another burst of heavy rain is expected to develop this afternoon. In
the 18 hours from 3pm this afternoon to 9am Sunday morning expect a
further 120 to 150mm to accumulate in addition to the rain that has
already fallen. Peak intensities 15 to 20mm/hr, easing overnight.
AREA/S AFFECTED: THE CENTRAL NORTH ISLAND HIGH COUNTRY FROM TONGARIRO
NATIONAL PARK WESTWARDS
Rain is expected to become heavy this afternoon. In the 18 hours from
3pm Saturday to 9am Sunday expect 80 to 120mm of rain with the
heaviest falls about Tongariro National Park. Peak intensities of 15
to 20mm/hr this evening and overnight.
STRONG WIND WARNING
AREA/S AFFECTED: CANTERBURY
Severe northwest gales are expected at times, with gusts of 130 km/h
in exposed areas, and may reach 150 km/h in some places, easing early
this evening. The strongest winds are most likely about the Mackenzie
Country and near the Foothills, but are likely to spread to the
plains for a time late this afternoon.
AREA/S AFFECTED: MARLBOROUGH
Severe northwest gales with gusts of 120km/h in exposed places, but
140km/h in the lee of the Kaikoura Range, easing after 9pm this
AREA/S AFFECTED: WELLINGTON
Severe northwest gales are expected until around midnight today, with
gusts of 130km/h likely in exposed places.
AREA/S AFFECTED: WAIRARAPA
Severe northwest gales with gusts of 140km/h in exposed places,
easing overnight Saturday.
AREA/S AFFECTED: TAIHAPE
Northwest gales are expected to become severe, gusting 130 km/h in
exposed places from around 3pm this afternoon, easing overnight
WARNINGS NO LONGER IN FORCE
HEAVY RAIN WARNINGS HAVE BEEN LIFTED FOR: FIORDLAND
STRONG WIND WARNINGS HAVE BEEN LIFTED FOR: SOUTHLAND
STRONG WIND WARNINGS HAVE BEEN LIFTED FOR: OTAGO
NEXT SEVERE WEATHER WARNING WILL BE ISSUED AT OR BEFORE
9:00pm Saturday 02-Aug-2014
Forecast prepared by: Hordur Thordarson
For further information after 2pm contact Duty Forecaster Leigh
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