SEVERE WEATHER WARNING.
ISSUED BY MetService AT 8:58pm 30-Nov-2015
URGENT - IMMEDIATE BROADCAST IN: Westland
PERIOD OF HEAVY RAIN FOR THE RANGES OF WESTLAND DURING TUESDAY AND
A moist northerly flow is expected to become established over the
South Island tomorrow (Tuesday). A front is expected to move east
over the South Island during the afternoon and evening, then become
slow moving on Wednesday. A period of heavy rain is expected about
the West Coast of the South Island with this front, with the heaviest
falls expected about the ranges of Westland south of Otira, where 100
to 140mm could accumulate through to Wednesday morning.
Although this is not an unusual amount of rain for the region, people
should be aware that moderate rain is likely to persist beyond the
warning period, with further heavy rain expected later Wednesday and
on Thursday. Rivers and streams may rise rapidly and be slow to
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HEAVY RAIN WARNING
AREA/S AFFECTED: THE RANGES OF WESTLAND SOUTH OF OTIRA
Rain is expected to become heavy about the ranges Tuesday afternoon,
then ease Wednesday morning. In the 18 hours between 3pm Tuesday and
9am Wednesday expect 100 to 120mm to accumulate, with 140mm or more
possible about higher parts of the Alps. Peak intensities 15 to
20mm/hr Tuesday evening and early Wednesday morning. Note, heavy rain
is expected to return late Wednesday afternoon or evening, and could
persist through much of Thursday.
FREEZING LEVEL: About 3500 metres.
NEXT SEVERE WEATHER WARNING WILL BE ISSUED AT OR BEFORE
9:00am Tuesday 01-Dec-2015
Forecast prepared by: Rochelle Fleming
For further information after 9pm Monday November 30th contact Duty
Forecaster Andy Downs
A service provided through a contract with the Crown
Short Range Forecast
Northland to Waitomo, also Coromandel, Bay of Plenty, Gisborne and Hawkes Bay: Cloudy periods. Few showers, becoming confined to Northland and Coromandel this evening and easing.
Taranaki to Wellington, including the central high country, Hawkes Bay, Wairarapa, Nelson and the Marlborough Sounds: Often cloudy. Scattered rain, retreating to Wairarapa and the central high country tomorrow.
Remainder of Marlborough: High cloud. A few spots of rain clearing tonight.
Buller, Westland and Fiordland: Rain in Buller, spreading south today and some heavy falls developing.
Canterbury: Fine with high cloud. Warm tomorrow afternoon.
Otago and Southland: Mainly fine, but cloud along the east coast clearing this afternoon. High cloud thickening this evening bringing scattered rain, clearing overnight. Mainly fine and warm tomorrow, but the chance of an afternoon shower.
Chatham Islands: Fine apart from morning and evening cloud.
Thursday: North Island, cloudy periods and a few showers in the west. South Island, rain with heavy falls in the west, easing to showers from the south. A brief period of rain spreading northwards in the east.
Friday: North Island, rain or showers with most places. South Island, few showers in the south and west. Early showers in the east then fine.
Saturday: North Island, rain or showers with most places. South Island, rain or showers in the south and west. Rain spreading north in the east.
Chatham Islands: Cloudy periods with the odd shower and strong or gale northerlies on Thursday. On Friday, periods of rain with gale northwesterlies dying out. Rain or showers with westerlies.