SEVERE WEATHER WARNING.
ISSUED BY MetService AT 9:49am 30-Nov-2015
URGENT - IMMEDIATE BROADCAST IN: Westland
PERIOD OF HEAVY RAIN FOR THE WESTLAND RANGES TUESDAY AND WEDNESDAY
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 Westland Ranges south of about Otira.
Rainfall accumulations of 100 to 140mm are expected about the ranges
over a 24 hour period, with 140 to 180mm about higher parts of the
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 on Thursday. Rivers
and streams may rise rapidly and be slow to abate.
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HEAVY RAIN WARNING
AREA/S AFFECTED: THE WESTLAND RANGES SOUTH OF OTIRA
Rain is expected to become heavy about the ranges during Tuesday
afternoon, then ease Wednesday afternoon. In the 24 hours from about
3pm Tuesday through to 3pm Wednesday expect 100 to 140mm to
accumulate, with 140 to 180mm likely about higher parts of the Alps.
Peak intensities 15 to 20mm/hr during Tuesday evening and early
FREEZING LEVEL: About 3500 metres.
NEXT SEVERE WEATHER WARNING WILL BE ISSUED AT OR BEFORE
9:00pm Monday 30-Nov-2015
Forecast prepared by: Leigh Matheson
A service provided through a contract with the Crown
Short Range Forecast
Northland, Auckland and Coromandel Peninsula: Cloudy periods and isolated showers.
Waikato and Bay of Plenty down to Manawatu and also Gisborne and Hawkes Bay: Often cloudy, with scattered rain, clearing in Waikato, Bay of Plenty and Gisborne tomorrow morning.
Horowhenua, Kapiti, Wellington, Wairarapa, Nelson and the Marlborough Sounds: Fine at first. Scattered rain developing overnight or early tomorrow.
Remainder of Marlborough: Increasing high cloud, with a few spots of rain tomorrow.
Buller, Westland and Fiordland: Fine tonight. Rain tomorrow, with some heavy falls from afternoon.
Canterbury, Otago and Southland: Mainly fine. However, low cloud about the east coast tonight and tomorrow morning. Cloud thickening later tomorrow with brief light rain.
Chatham Islands: Fine spells.
Wednesday: North Island, cloudy periods and a few showers in the west. South Island, rain in the north and west, with possible heavy falls in the west. High cloud at times in the east.
Thursday: North Island, cloudy periods and a few showers for most regions but remaining dry in Gisborne and Hawkes Bay. 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, scattered rain or showers. South Island, few showers in the south and west. Mainly fine elsewhere.
Chatham Islands: Fine spells with northerlies strengthening on Wednesday. A few showers with strong northerlies on Thursday. On Friday, rain or showers with strong northwesterlies dying out.