Issued Friday, August 20, 1999 at 11.00am
The long range forecast from Weather Workshop for all of New Zealand to midnight Tuesday:
Situation: An active frontal zone over the lower South Island is moving slowly northeast and should move off the upper
North Island later tomorrow. The front is preceded by a very strong northwest flow and followed by a weak ridge. During
Sunday a cold front should sweep the country and is followed by a cold disturbed southwest flow. This flow is likely to
persist into Tuesday.
NORTHLAND, AUCKLAND, COROMANDEL PENINSULA, BAY of PLENTY/ROTORUA, WAIKATO, WAITOMO, TAUMARANUI, TARANAKI, TAUPO,
TAIHAPE, WANGANUI and MANAWATU: Rain in most places today but falls not reaching areas north of Hamilton until evening.
Northwest winds to gale about Wellington and strong and gusty in many other places for a time. Tomorrow rain gradually
clearing from the south with fine
periods increasing. From Sunday to Tuesday a few showers in the north and west, long fine periods elsewhere with cooler
southwesterlies.
GISBORNE, HAWKES BAY and WAIRARAPA: Cloud increasing with strengthening northwesterlies and rain about Wairarapa. Falls
spreading elsewhere this evening and overnight then a gradual clearance working north tomorrow. A period of showers
spreading from the south Sunday with a southwest change. Further showers Monday and Tuesday, chiefly coastal.
WELLINGTON: Rain becoming heavy for a time this afternoon and evening with northwesterlies to gale force. Winds easing
overnight then becoming fine tomorrow. Showers and turning colder Sunday with a southwest change. Mainly fine Monday and
Tuesday with northwest winds.
NELSON: A period of rain today then clearing overnight. Brief showers Sunday with southwest winds then mainly fine on
remaining days.
MARLBOROUGH: Rain becoming widespread today with strong gusty northwesterlies. Early tomorrow rain clearing and winds
turning to the south briefly. A squally southwest change Sunday with showers. Further showers, chiefly coastal Monday
then mainly fine conditions Tuesday.
CANTERBURY and OTAGO: Rain about the western ranges with brief falls further east at times. Northwest gales in some
exposed places easing during the day. Tomorrow mainly fine but a few coastal showers possible during the morning. Sunday
sees a squally showery southwest change spreading north and turning colder with snow to the ranges. A few further
showers about the coast Monday then mainly fine Tuesday but cold southwest continuing.
BULLER, WESTLAND and FIORDLAND: Widespread rain slowly clearing from the south today then fine at first tomorrow. Cloud
then increasing with showers developing south of the glaciers. Showers reaching most places Sunday but fine spells also.
From Tuesday onwards a mix of showers and fine periods in southwest conditions.
SOUTHLAND: Northwesterlies easing today with rain areas becoming confined to the coast. Tomorrow cloudy periods with
coastal showers becoming widespread later. Colder from early Sunday with showery southwesterlies. Monday and Tuesday
sees winds from the west or southwest along with showers and fine periods.
CHATHAM ISLANDS: Northwesterlies strengthening today and rain from tonight. Tomorrow rain persisting for much of the day
then easing to showers at night with winds turning southwest. From Sunday onwards changeable showery conditions with
cold southwesterlies.
(c) Copyright Weather Workshop Limited 1999