SEVERE WEATHER WARNING.
ISSUED BY MetService AT 9:25am 05-Aug-2015
URGENT - IMMEDIATE BROADCAST IN: Bay Of Plenty Rotorua, Northland,
Waikato, Waitomo, Taupo, Taihape, Taranaki, Taumarunui
HEAVY RAIN ABOUT THE NORTHERN AND CENTRAL NORTH ISLAND OVERNIGHT.
A frontal rainband bringing rain to the northern North Island is
expected to intensify as it moves eastwards over the North Island
overnight. This is likely to bring short periods of very heavy rain
to parts of the northern and central North Island overnight and on
The heaviest rain is expected about the ranges of eastern Bay of
Plenty where up to 130mm of rain may accumlate today and tomorrow,
while between 50 and 80mm of rain could fall in a short time about
parts of Northland, western Bay of Plenty, and the central North
Island high country overnight. Rainfall rates may reach 20-30mm/hr
for an hour or two in these places.
People in these areas are advised that this short duration heavy rain
could cause streams and rivers to rise rapidly, and surface flooding
and slips possible.
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HEAVY RAIN WARNING
AREA/S AFFECTED: THE RANGES OF BAY OF PLENTY EAST OF WHAKATANE
Further periods of rain are expected today, but a period of very
heavy rain is likely tomorrow. In the 29 hours from 9am today
(Wednesday) to 2pm Thursday, 100-130mm of rain is expected. Rainfall
rates of 3-8mm/hr are mostly expected today, but could reach
20-30mm/hr for a time on Thursday.
AREA/S AFFECTED: BAY OF PLENTY AWAY FROM THE EASTERN RANGES.
Periods of heavy rain are expected overnight and on Thursday morning.
In the 12 hours from 10pm tonight (Wednesday) to 10am Thursday,
70-80mm of rain is likely about the Kaimai and Mamaku ranges, and
50-70mm elsewhere. The heaviest rain is expected on Thursday morning,
when rainfall rates may reach 20-25mm/hr for an hour or two.
AREA/S AFFECTED: NORTHLAND
Occasional rain is expected about Northland today, but the rain is
expected to become more persistent this evening, with a short period
of very heavy rain overnight. In the 10 hours from 6pm today
(Wednesday) to 4am Thursday morning, 50-70mm is likely, mainly in the
north and east. Rainfall rates may reach 20-30m/hr for an hour or two
AREA/S AFFECTED: MT TARANAKI, AND THE CENTRAL NORTH ISLAND HILL
COUNTRY BETWEEN TE KUITI AND RAETIHI, INCLUDING EASTERN TARANAKI,
TONGARIRO NATIONAL PARK AND THE HEADWATERS OF THE WHANGANUI RIVER.
Periods of heavy rain are expected overnight. In the 13 hours between
6pm today (Wednesday) and 7am Thursday morning, 70-90mm of rain is
likely about the mountains, and 50-60mm elsewhere. Rainfall rates may
reach 20mm/hr for an hour or two overnight.
NEXT SEVERE WEATHER WARNING WILL BE ISSUED AT OR BEFORE
9:00pm Wednesday 05-Aug-2015
Forecast prepared by: John Crouch
A service provided through a contract with the Crown
Short Range Forecast
Northland to Taranaki and Taihape, also Coromandel Peninsula, Bay of Plenty, Gisborne and Hawkes Bay: Rain with some heavy falls. Possible downpours and northerly gales overnight. Rain clearing tomorrow morning or early afternoon and fine spells developing.
Wanganui to Wellington, also Wairarapa: Rain spreading south tonight, heavy for a time overnight. Clearing to fine spells tomorrow morning.
Nelson and Buller: Fine at first. Cloud increasing tomorrow, with rain after dark.
Westland and Fiordland: Cloudy periods and a few showers, turning to rain tomorrow with heavy falls and possible thunderstorms.
Marlborough to Mid-Canterbury: Fine.
South Canterbury to Southland: Fine at first. Cloud increasing tomorrow, with a few showers developing.
Chatham Islands: Fine at first. Periods of rain tomorrow.
Friday: North Island, rain or showers for most places, some heavy and thundery falls possible in the west. Brief scattered rain in the east. South Island, rain at times in the south and west, some heavy and possibly thundery falls in the west at first. Morning rain in the north and east, then high cloud.
Saturday: North Island, occasional rain or showers for most places,clearing Gisborne later. South Island, showers in the west gradually clearing. Scattered showers in the east, with snow to low levels. Mainly fine in Nelson.
Sunday: North Island, scattered showers, clearing from Waikato to north Taranaki and across to Bay of Plenty. South Island, fine in the west. Scattered showers in the east, with snow possible to low levels.
Chatham Islands: Rain to showers early Friday. Fresh northerlies turning westerly. A period of rain on Saturday then showers. Northwesterlies changing southwest. Showers with westerlies on Sunday.