NZ Historic Weather Events Catalogue

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SevereApril 1999 New Zealand Snow and Marine Inundation ( 1999-04-16 )

50-60 years

A combination of gale force south-westerlies, high rainfall, low air pressure and high tides produced sea flooding on the upper North Island's west coast. Snow, high winds and thunderstorms were also experienced in parts of the North Island and southern South Island. A boy was drowned near Dargaville and a woman was killed in a car accident on a snow-covered road near Wairouru.

New Zealand

Multi HazardMulti Hazard at New Zealand
Duration:   3  days - From the 16th to the 18th of April.
Comments:

CauseA broad and deepening trough was preceded by strong north-westerly flows and followed by colder south-westerlies. A major front occurred within the trough. A pool of cold air associated with a CVA (Cyclonic Vorticity Advection) maximum behind this front moved onto Southland, bringing heavy snow. It also brought gale force winds over the North Island, contributing to sea flooding along the west coast.

CommentTemperatures plummeted throughout the country.

High Wind GustsHigh Wind / Gust
Comments:

Affected LifelineStrong winds brought down trees and power lines.

Snow / IceSnow / Ice
Comments:

Affected LifelineSnow closed roads.

North Island

Multi HazardMulti Hazard at North Island
Comments:

CommentA combination of gale force south-westerlies, heavy rain, low air pressure and high tides produced sea flooding along the west coast of the North Island from Waikato through to Northland.

CasualtiesThere were nine road fatalies in the North Island, most of them weather-related.

High Wind GustsHigh Wind / Gust
Comments:

DamageWesterly gales brought down trees.

Affected LifelineHigh winds brought down power lines, cutting power.

South Island

Snow / IceSnow / Ice at South Island
Comments:

CommentThe storm brought snow close to sea level in the south of the South Island.

Affected LifelineHeavy snowfalls to low levels closed South Island roads on the 17th.

Northland

FloodingFlooding at Awakino Point
Map Location: -35.917272 173.90005
Comments:

CasualtiesA 20-month-old boy was drowned the 18th on the after he was caught in a stormwater drain at his home in Awakino East Point Road. The drain was more than 1m deep due to the flooding.

Heavy RainHeavy Rain at Dargaville
Map Location: -35.944137 173.869958
Comments:

CommentThe Dargaville area received only 10 mm (1.0 cm) of rain on the 17th.

FloodingFlooding
Comments:

CommentA combination of high rainfall in the Dargaville catchment, low pressure, strong south-westerly winds and a spring tide on the 17th resulted in severe flooding from the Wairoa River in the township and surrounding farmland.

ImpactDargaville homes and businesses were inundated. A number of homes in Mangawhare were flooded. Up to 40 shops and other businesses were flooded and some houses were only saved by intensive sandbagging. The flood waters went right through the Central Hotel and and Northern Wairoa Hotel.

Affected LifelineSome roads around the sea were temporarily closed. Pouto Road was impassable until after the high tide at 1:06pm. Police and fire fighters had to undertake traffic control in some central Dargaville streets. Roads were badly damaged.

Peak Water LevelThe floods were up to about 1.5 m deep. Shops on the main road had up to 75 cm of water through them.

CommentThe chief fire officer said the floods were worse than those of Cyclone Bola in 1988.

Property DamageA considerable amount of damage was done to shops and houses. Shops and businesses had carpets soaked and stocks ruined.

Property DamageThousands of dollars of damage was done to the Central Hotel.

Physical CharacteristicThe Kauri Holiday Shoppe had several centimetres of water spread over the floor.

ImpactThe flood waters rose so rapidly that tractors were submerged in paddocks.

Crop DamageMany kumara farms and market gardens were inundated. Crates of harvested kumara were swept away and all Dargaville's kumara crops that were still in the ground were presumed destroyed. The soil conditions were also damaged for future planting.

Crop DamageAbout a fifth, or 3000 tonnes, of kumara was still in the ground, worth about $4 million ($5,180,000 2008 dollars).

Crop DamageAn Aoroa market garden had water covering 12 acres of courgettes, an acre of cucumbers, 1/2 acre of beans and nine acres of kumara. The courgettes were ready to harvest and were worth about $40,000 ($51,800 2008 dollars).

ImpactThe flood caused some businesses to close for a few days and several had to close for over a fortnight.

CommentIt was a 50-60 year flood.

CommentEveryone invloved was surprised by the extent and rapidity of the flooding.

CommentThe banks of the Wairoa River in Dargaville had been sandbagged in preparation for the spring tide on the evening of the 17th, but the winds pushed water up the river, causing the water to breach stopbanks.

Physical CharacteristicOne farmer waded in water up to his arm pits on his farm.

ImpactThe Dargaville volunteer firebrigade had about 14 flood-related call-outs over the weekend, from 12:30pm on the 17th to 2am on the 18th.

CommentThe flood waters had receded by mid-afternoon on the 17th. On the 18th, flood waters from the Wairoa River came back up to within 5 cm of the retaining wall by the band rotunda.

ImpactFlood waters formed a lake around a Hoanga Road house and left a layer of stinking mud when they receded.

Maritime / CoastalMaritime / Coastal
Comments:

Physical CharacteristicThe Dargaville area had a 0.4-metre spring tide on the 17th.

Peak Water LevelThe high tide was 4.4 m.

High Wind GustsHigh Wind / Gust
Comments:

DamageTrees were blown down.

Multi HazardMulti Hazard
Comments:

Physical CharacteristicThe barometric pressure dropped to 997 hPa on the morning of the 17th.

Affected LifelineThe power and telephones went down for a time.

Insurance PaymentInsurance Industry Payouts for the Dargaville floods totalled $1,700,000 ($2,201,000 2008 dollars).

Maritime / CoastalMaritime / Coastal at Kaipara Harbour
Map Location: -36.310512 174.206864
Comments:

CommentStorm-tide levels in the Kaipara Harbour on the 17th exacerbated the flooding in Dargarville.

Peak Water LevelIt was a combined perigen-spring tide of 1.62 m above the mean sea level. The total storm surge was 0.5m above the predicted tide and was exteme over just one tidal cycle.

Multi HazardMulti Hazard
Comments:

Physical CharacteristicThe barometric pressure was 988.9 hPa.

FloodingFlooding at Kellys Bay
Map Location: -36.248229 174.097811
Comments:

CommentReports of flooding first came in from the Te Kopuru and Kellys Bay areas.

Affected LifelineKellys Bay was cut off by flood waters.

FloodingFlooding at Ruawai
Map Location: -36.137261 174.025402
Comments:

Property DamageSome farms at Ruawai were submerged by salt water. One farm still had paddocks under water almost a week later. Pastures were damaged and feed lost.

FloodingFlooding at Te Kopuru
Map Location: -36.029404 173.906646
Comments:

CommentReports of flooding first came in from the Te Kopuru and Kellys Bay areas.

FloodingFlooding at Tokatoka
Map Location: -36.05989 173.968681
Comments:

Affected LifelineLogs blocked State Highway 12 at Tokatoka across three-quarters of th road.

ImpactA seal was washed up on the highway at Tokatoka.

Auckland

Maritime / CoastalMaritime / Coastal at Auckland
Comments:

ImpactProperties were flooded in parts of Manukau Harbour, with water lapping around houses.

Affected LifelineStormwater drains overflowed in parts of Manukau, spilling small amounts of sewage on to about 15 properties.

Multi HazardMulti Hazard
Comments:

Physical CharacteristicTemperatures plunged to 10 degrees on the afternoon of the 17th.

High Wind GustsHigh Wind / Gust
Comments:

Physical CharacteristicWinds gusted up to 66 km/hr in Auckland.

Maritime / CoastalMaritime / Coastal at Huia
Map Location: -36.998352 174.56324
Comments:

ImpactSeveral houses at Huia were flooded on the afternoon of the 17th. A Huia resident said a wall of water hit her fence "like a tidal wave" early on the 18th, but sandbags helped to prevent water getting in the house.

Maritime / CoastalMaritime / Coastal at Little Huia
Map Location: -37.015544 174.558576
Comments:

Affected LifelineThe road to Little Huia was cut for most traffic.

Maritime / CoastalMaritime / Coastal at Onehunga
Map Location: -36.921857 174.785998
Comments:

Affected LifelineWater covered roads in low-lying parts of Onehunga.

Waikato

LightningLightning at Waikato
Comments:

CommentThunderstorms and lightning were experienced in the Waikato.

LightningLightning at Hamilton
Map Location: -37.780816 175.272836
Comments:

Affected LifelineEarly morning storms left much of Hamilton without power on the 17th. Power was cut to hundreds of houses in Nawton and Dinsdale just after 8am when lightning struck a power feeder.

High Wind GustsHigh Wind / Gust
Comments:

Property DamageTrees were sent crashing onto houses.

Heavy RainHeavy Rain
Comments:

Affected LifelineRoads became slippery.

Maritime / CoastalMaritime / Coastal at Raglan
Map Location: -37.797036 174.865014
Comments:

CommentIn Raglan, the wind and rain whipped waves high enough to breach sea walls on the 17th.

ImpactSome outbuildings were inundated.

Physical CharacteristicOne man had water so deep on his front lawn thst he cast a fishing line from the deck of his home.

Property DamageAt a house in low-lying Lorenzen Bay, four high tides inundated a sleepout and garage and carried off timber stockpiled for home renovations. The water ruined carpets, a computer, videos and school books in the outside room. The water spread under neighbouring houses and lapped at their steps.

Affected LifelineAt the same property, sewage was washed from pipes across the lawn.

CommentThe highest tide was at about 10:30am on the 17th.

CommentLocals agreed the tides were the worst in about 40 years.

Affected LifelineElectricity was cut to Lorenzen Bay for about 12 hours on the 17th after water blew fuses the in underground network.

Affected LifelineA footbridge across the estuary from the town to the camping ground was impassable when the camp went under water. Wainui Road was also closed for some of the day. Tarseal on Puriri Street was damaged by flooding.

Physical CharacteristicOutside the harbour, the swells were 4-5 m high.

High Wind GustsHigh Wind / Gust
Comments:

Affected LifelineA power pole was blown down in Manukau Road.

Peak Wind SpeedWinds gusted up to 70 knots (130 km/hr).

LightningLightning at Tokoroa
Map Location: -38.224845 175.841606
Comments:

Stock DamageLightning killed a number of cows in Tokoroa.

Manawatu-Wanganui

Snow / IceSnow / Ice at Desert Road
Map Location: -39.30009 175.73859
Comments:

Affected LifelineThe Desert Road was closed by snow overnight on the 17th, and other roads were perilous.

Physical CharacteristicThe was snow 5 cm deep on the road.

LandslideLandslide at Manawatu Gorge
Map Location: -40.31792 175.798027
Comments:

Affected LifelineHeavy rain caused slips in the Manawatu Gorge.

Snow / IceSnow / Ice at Mount Ruapehu
Map Location: -39.278843 175.567271
Comments:

Physical CharacteristicMount Ruapehu had 15 cm of snow.

Snow / IceSnow / Ice at Waiouru
Map Location: -39.466728 175.685937
Comments:

Physical CharacteristicWaiouru had a minimum temperature of -1 degC on the 17th - the North Island's coldest temperature.

ImpactOn the 17th there were five accidents in two hours as motorists failed to drive to the road conditions.

CasualtiesA woman died after her car and another collided on the snow-covered State Highway 1, 8 km south of Waiouru, at 2:30pm on the 17th.

Wellington

High Wind GustsHigh Wind / Gust at Wellington
Comments:

Affected LifelineNorth-westerly gales disrupted flights.

DamageTrees were damaged by the winds.

LightningLightning at Upper Hutt
Map Location: -41.139372 175.055716
Comments:

Affected LifelineThunderstorms caused power cuts in Upper Hutt overnight.

Canterbury

Multi HazardMulti Hazard at Banks Peninsula
Map Location: -43.73644 173.024672
Comments:

CommentSnow and hail fell on Banks Peninsula.

High Wind GustsHigh Wind / Gust at Christchurch
Map Location: -43.53112 172.636147
Comments:

CommentNorthwest gales in Christchurch preceded a cold change.

DamageTrees were felled by the gales.

Snow / IceSnow / Ice
Comments:

CommentSnow fell on the Port Hills for the first time in April since 1994.

Otago

Snow / IceSnow / Ice at Otago
Comments:

Affected LifelineSnow made the northern motorway treacherous.

Snow / IceSnow / Ice at Dunedin
Map Location: -45.87911 170.502707
Comments:

CommentSnow fell in hill suburbs.

Southland

Snow / IceSnow / Ice at Southland
Comments:

Affected LifelineRoads were closed.

Affected LifelinePower cuts were experienced.

Maritime / CoastalMaritime / Coastal at Dog Island
Map Location: -46.651498 168.413404
Comments:

Physical CharacteristicAt Dog Island, there was 0.507 m of storm surge on the 16th.

Maritime / CoastalMaritime / Coastal at Bluff
Map Location: -46.606468 168.332724
Comments:

Peak Water LevelOn the 16th, the sea level at Bluff rose to 1.83 m above mean sea level. This was the highest level recorded in Bluff Harbour.

Physical CharacteristicThe predicted high tide was 3 m or slightly less, meaning there was at least 0.44 m of storm surge at the Port (a 3.1 m predicted tide equates to 1.49 m above mean sea level).

Maritime / CoastalMaritime / Coastal at Invercargill
Map Location: -46.436318 168.35975
Comments:

Peak Water LevelAt 1:40pm on the 16th, the Invercargill estuary at the Stead Street Bridge recorded a level of 2.13 m. This had an annual return period of 1.8 years.

Snow / IceSnow / Ice at Te Anau
Map Location: -45.415428 167.699285
Comments:

CommentTe Anau Basin received its biggest snowfall for years.

References

Bell, R.G; Gorman, R.M. (2003). Overview of Weather and Coastal Hazards in the Northland Region. Part II: Coastal.
Bradley, D. (2002). Storm surge and marine inundation. Environment Southland, Invercargill.
Headline: Heavy rain batters North Island.
The Chronicle, 19 April 1999.
Insurance Councils, The Cost of Weather Loses, Claims History (Updated 2004).
Major weather events in New Zealand, Floods and High Rainfall, Floods to 30 Sept 2005.
Meteorological Society of New Zealand (Inc.) Newsletter 77, June 1999.
www.metservice, notable weather events.govt.nz
Headline: Cat-astrophe averted.
The Northern Advocate, 19 April 1999.
Headline: Dargaville fire brigade run off feet.
The Northern Advocate, 19 April 1999.
Headline: Festivity taken out of Kumara Festival.
The Northern Advocate, 19 April 1999.
Headline: Town flood 'impossible to predict'.
The Northern Advocate, 19 April 1999.
Headline: Ex-mayor floats wooden flood plan.
The Northern Advocate, 26 April 1999.
Headline: Dargaville floods claim toddler's life.
The Northern Advocate, 20 April 1999.
Headline: Firefighters fight floods.
The Northland Times, 19 April 1999.
Headline: Flood victims fear salt is hidden killer.
The Northland Times, 26 April 1999.
Headline: Floodbusters ready with extra sandbags.
The Northland Times, 19 April 1999.
Headline: Only 225 days to summer.
The Northland Times, 19 April 1999.
Headline: Caring councillors flood to victims.
The Northland Times, 20 April 1999.
Headline: Devastated Guy loses $40,000 in just one day.
The Northland Times, 20 April 1999.
Headline: Flood creates 'Highway to hell'.
The Northland Times, 20 April 1999.
Headline: Flooding is such a bad business.
The Northland Times, 20 April 1999.
Headline: Kumara bill could grow to $4 million.
The Northland Times, 20 April 1999.
Headline: Kumara price to double: Grower problems begin to flood in.
The Northland Times, 21 April 1999.
Headline: Insurance firms brace for huge damage claims.
The Northland Times, 21 April 1999.
Headline: Motorists run into deep trouble.
The Northland Times, 21 April 1999.
Headline: 10 killed in horrific weekend on roads.
www.nzherald.co.nz, 19 April, 1999.
Headline: Flooding could hit more often.
www.nzherald.co.nz, 19 April, 1999.
Headline: Raglan saturated as wind-whipped tides lap at doors.
www.nzherald.co.nz, 19 April, 1999, 12:00am.
Headline: Mayor: lets think about higher ground.
www.nzherald.co.nz, 27 September, 1999.

SevereApril 1999 New Zealand Snow and Marine Inundation ( 1999-04-16 )

50-60 years

A combination of gale force south-westerlies, high rainfall, low air pressure and high tides produced sea flooding on the upper North Island's west coast. Snow, high winds and thunderstorms were also experienced in parts of the North Island and southern South Island. A boy was drowned near Dargaville and a woman was killed in a car accident on a snow-covered road near Wairouru.

New Zealand

Multi HazardMulti Hazard at New Zealand
Duration:   3  days - From the 16th to the 18th of April.
Comments:

CauseA broad and deepening trough was preceded by strong north-westerly flows and followed by colder south-westerlies. A major front occurred within the trough. A pool of cold air associated with a CVA (Cyclonic Vorticity Advection) maximum behind this front moved onto Southland, bringing heavy snow. It also brought gale force winds over the North Island, contributing to sea flooding along the west coast.

CommentTemperatures plummeted throughout the country.

High Wind GustsHigh Wind / Gust
Comments:

Affected LifelineStrong winds brought down trees and power lines.

Snow / IceSnow / Ice
Comments:

Affected LifelineSnow closed roads.

North Island

Multi HazardMulti Hazard at North Island
Comments:

CommentA combination of gale force south-westerlies, heavy rain, low air pressure and high tides produced sea flooding along the west coast of the North Island from Waikato through to Northland.

CasualtiesThere were nine road fatalies in the North Island, most of them weather-related.

High Wind GustsHigh Wind / Gust
Comments:

DamageWesterly gales brought down trees.

Affected LifelineHigh winds brought down power lines, cutting power.

South Island

Snow / IceSnow / Ice at South Island
Comments:

CommentThe storm brought snow close to sea level in the south of the South Island.

Affected LifelineHeavy snowfalls to low levels closed South Island roads on the 17th.

Northland

FloodingFlooding at Awakino Point
Map Location: -35.917272 173.90005
Comments:

CasualtiesA 20-month-old boy was drowned the 18th on the after he was caught in a stormwater drain at his home in Awakino East Point Road. The drain was more than 1m deep due to the flooding.

Heavy RainHeavy Rain at Dargaville
Map Location: -35.944137 173.869958
Comments:

CommentThe Dargaville area received only 10 mm (1.0 cm) of rain on the 17th.

FloodingFlooding
Comments:

CommentA combination of high rainfall in the Dargaville catchment, low pressure, strong south-westerly winds and a spring tide on the 17th resulted in severe flooding from the Wairoa River in the township and surrounding farmland.

ImpactDargaville homes and businesses were inundated. A number of homes in Mangawhare were flooded. Up to 40 shops and other businesses were flooded and some houses were only saved by intensive sandbagging. The flood waters went right through the Central Hotel and and Northern Wairoa Hotel.

Affected LifelineSome roads around the sea were temporarily closed. Pouto Road was impassable until after the high tide at 1:06pm. Police and fire fighters had to undertake traffic control in some central Dargaville streets. Roads were badly damaged.

Peak Water LevelThe floods were up to about 1.5 m deep. Shops on the main road had up to 75 cm of water through them.

CommentThe chief fire officer said the floods were worse than those of Cyclone Bola in 1988.

Property DamageA considerable amount of damage was done to shops and houses. Shops and businesses had carpets soaked and stocks ruined.

Property DamageThousands of dollars of damage was done to the Central Hotel.

Physical CharacteristicThe Kauri Holiday Shoppe had several centimetres of water spread over the floor.

ImpactThe flood waters rose so rapidly that tractors were submerged in paddocks.

Crop DamageMany kumara farms and market gardens were inundated. Crates of harvested kumara were swept away and all Dargaville's kumara crops that were still in the ground were presumed destroyed. The soil conditions were also damaged for future planting.

Crop DamageAbout a fifth, or 3000 tonnes, of kumara was still in the ground, worth about $4 million ($5,180,000 2008 dollars).

Crop DamageAn Aoroa market garden had water covering 12 acres of courgettes, an acre of cucumbers, 1/2 acre of beans and nine acres of kumara. The courgettes were ready to harvest and were worth about $40,000 ($51,800 2008 dollars).

ImpactThe flood caused some businesses to close for a few days and several had to close for over a fortnight.

CommentIt was a 50-60 year flood.

CommentEveryone invloved was surprised by the extent and rapidity of the flooding.

CommentThe banks of the Wairoa River in Dargaville had been sandbagged in preparation for the spring tide on the evening of the 17th, but the winds pushed water up the river, causing the water to breach stopbanks.

Physical CharacteristicOne farmer waded in water up to his arm pits on his farm.

ImpactThe Dargaville volunteer firebrigade had about 14 flood-related call-outs over the weekend, from 12:30pm on the 17th to 2am on the 18th.

CommentThe flood waters had receded by mid-afternoon on the 17th. On the 18th, flood waters from the Wairoa River came back up to within 5 cm of the retaining wall by the band rotunda.

ImpactFlood waters formed a lake around a Hoanga Road house and left a layer of stinking mud when they receded.

Maritime / CoastalMaritime / Coastal
Comments:

Physical CharacteristicThe Dargaville area had a 0.4-metre spring tide on the 17th.

Peak Water LevelThe high tide was 4.4 m.

High Wind GustsHigh Wind / Gust
Comments:

DamageTrees were blown down.

Multi HazardMulti Hazard
Comments:

Physical CharacteristicThe barometric pressure dropped to 997 hPa on the morning of the 17th.

Affected LifelineThe power and telephones went down for a time.

Insurance PaymentInsurance Industry Payouts for the Dargaville floods totalled $1,700,000 ($2,201,000 2008 dollars).

Maritime / CoastalMaritime / Coastal at Kaipara Harbour
Map Location: -36.310512 174.206864
Comments:

CommentStorm-tide levels in the Kaipara Harbour on the 17th exacerbated the flooding in Dargarville.

Peak Water LevelIt was a combined perigen-spring tide of 1.62 m above the mean sea level. The total storm surge was 0.5m above the predicted tide and was exteme over just one tidal cycle.

Multi HazardMulti Hazard
Comments:

Physical CharacteristicThe barometric pressure was 988.9 hPa.

FloodingFlooding at Kellys Bay
Map Location: -36.248229 174.097811
Comments:

CommentReports of flooding first came in from the Te Kopuru and Kellys Bay areas.

Affected LifelineKellys Bay was cut off by flood waters.

FloodingFlooding at Ruawai
Map Location: -36.137261 174.025402
Comments:

Property DamageSome farms at Ruawai were submerged by salt water. One farm still had paddocks under water almost a week later. Pastures were damaged and feed lost.

FloodingFlooding at Te Kopuru
Map Location: -36.029404 173.906646
Comments:

CommentReports of flooding first came in from the Te Kopuru and Kellys Bay areas.

FloodingFlooding at Tokatoka
Map Location: -36.05989 173.968681
Comments:

Affected LifelineLogs blocked State Highway 12 at Tokatoka across three-quarters of th road.

ImpactA seal was washed up on the highway at Tokatoka.

Auckland

Maritime / CoastalMaritime / Coastal at Auckland
Comments:

ImpactProperties were flooded in parts of Manukau Harbour, with water lapping around houses.

Affected LifelineStormwater drains overflowed in parts of Manukau, spilling small amounts of sewage on to about 15 properties.

Multi HazardMulti Hazard
Comments:

Physical CharacteristicTemperatures plunged to 10 degrees on the afternoon of the 17th.

High Wind GustsHigh Wind / Gust
Comments:

Physical CharacteristicWinds gusted up to 66 km/hr in Auckland.

Maritime / CoastalMaritime / Coastal at Huia
Map Location: -36.998352 174.56324
Comments:

ImpactSeveral houses at Huia were flooded on the afternoon of the 17th. A Huia resident said a wall of water hit her fence "like a tidal wave" early on the 18th, but sandbags helped to prevent water getting in the house.

Maritime / CoastalMaritime / Coastal at Little Huia
Map Location: -37.015544 174.558576
Comments:

Affected LifelineThe road to Little Huia was cut for most traffic.

Maritime / CoastalMaritime / Coastal at Onehunga
Map Location: -36.921857 174.785998
Comments:

Affected LifelineWater covered roads in low-lying parts of Onehunga.

Waikato

LightningLightning at Waikato
Comments:

CommentThunderstorms and lightning were experienced in the Waikato.

LightningLightning at Hamilton
Map Location: -37.780816 175.272836
Comments:

Affected LifelineEarly morning storms left much of Hamilton without power on the 17th. Power was cut to hundreds of houses in Nawton and Dinsdale just after 8am when lightning struck a power feeder.

High Wind GustsHigh Wind / Gust
Comments:

Property DamageTrees were sent crashing onto houses.

Heavy RainHeavy Rain
Comments:

Affected LifelineRoads became slippery.

Maritime / CoastalMaritime / Coastal at Raglan
Map Location: -37.797036 174.865014
Comments:

CommentIn Raglan, the wind and rain whipped waves high enough to breach sea walls on the 17th.

ImpactSome outbuildings were inundated.

Physical CharacteristicOne man had water so deep on his front lawn thst he cast a fishing line from the deck of his home.

Property DamageAt a house in low-lying Lorenzen Bay, four high tides inundated a sleepout and garage and carried off timber stockpiled for home renovations. The water ruined carpets, a computer, videos and school books in the outside room. The water spread under neighbouring houses and lapped at their steps.

Affected LifelineAt the same property, sewage was washed from pipes across the lawn.

CommentThe highest tide was at about 10:30am on the 17th.

CommentLocals agreed the tides were the worst in about 40 years.

Affected LifelineElectricity was cut to Lorenzen Bay for about 12 hours on the 17th after water blew fuses the in underground network.

Affected LifelineA footbridge across the estuary from the town to the camping ground was impassable when the camp went under water. Wainui Road was also closed for some of the day. Tarseal on Puriri Street was damaged by flooding.

Physical CharacteristicOutside the harbour, the swells were 4-5 m high.

High Wind GustsHigh Wind / Gust
Comments:

Affected LifelineA power pole was blown down in Manukau Road.

Peak Wind SpeedWinds gusted up to 70 knots (130 km/hr).

LightningLightning at Tokoroa
Map Location: -38.224845 175.841606
Comments:

Stock DamageLightning killed a number of cows in Tokoroa.

Manawatu-Wanganui

Snow / IceSnow / Ice at Desert Road
Map Location: -39.30009 175.73859
Comments:

Affected LifelineThe Desert Road was closed by snow overnight on the 17th, and other roads were perilous.

Physical CharacteristicThe was snow 5 cm deep on the road.

LandslideLandslide at Manawatu Gorge
Map Location: -40.31792 175.798027
Comments:

Affected LifelineHeavy rain caused slips in the Manawatu Gorge.

Snow / IceSnow / Ice at Mount Ruapehu
Map Location: -39.278843 175.567271
Comments:

Physical CharacteristicMount Ruapehu had 15 cm of snow.

Snow / IceSnow / Ice at Waiouru
Map Location: -39.466728 175.685937
Comments:

Physical CharacteristicWaiouru had a minimum temperature of -1 degC on the 17th - the North Island's coldest temperature.

ImpactOn the 17th there were five accidents in two hours as motorists failed to drive to the road conditions.

CasualtiesA woman died after her car and another collided on the snow-covered State Highway 1, 8 km south of Waiouru, at 2:30pm on the 17th.

Wellington

High Wind GustsHigh Wind / Gust at Wellington
Comments:

Affected LifelineNorth-westerly gales disrupted flights.

DamageTrees were damaged by the winds.

LightningLightning at Upper Hutt
Map Location: -41.139372 175.055716
Comments:

Affected LifelineThunderstorms caused power cuts in Upper Hutt overnight.

Canterbury

Multi HazardMulti Hazard at Banks Peninsula
Map Location: -43.73644 173.024672
Comments:

CommentSnow and hail fell on Banks Peninsula.

High Wind GustsHigh Wind / Gust at Christchurch
Map Location: -43.53112 172.636147
Comments:

CommentNorthwest gales in Christchurch preceded a cold change.

DamageTrees were felled by the gales.

Snow / IceSnow / Ice
Comments:

CommentSnow fell on the Port Hills for the first time in April since 1994.

Otago

Snow / IceSnow / Ice at Otago
Comments:

Affected LifelineSnow made the northern motorway treacherous.

Snow / IceSnow / Ice at Dunedin
Map Location: -45.87911 170.502707
Comments:

CommentSnow fell in hill suburbs.

Southland

Snow / IceSnow / Ice at Southland
Comments:

Affected LifelineRoads were closed.

Affected LifelinePower cuts were experienced.

Maritime / CoastalMaritime / Coastal at Dog Island
Map Location: -46.651498 168.413404
Comments:

Physical CharacteristicAt Dog Island, there was 0.507 m of storm surge on the 16th.

Maritime / CoastalMaritime / Coastal at Bluff
Map Location: -46.606468 168.332724
Comments:

Peak Water LevelOn the 16th, the sea level at Bluff rose to 1.83 m above mean sea level. This was the highest level recorded in Bluff Harbour.

Physical CharacteristicThe predicted high tide was 3 m or slightly less, meaning there was at least 0.44 m of storm surge at the Port (a 3.1 m predicted tide equates to 1.49 m above mean sea level).

Maritime / CoastalMaritime / Coastal at Invercargill
Map Location: -46.436318 168.35975
Comments:

Peak Water LevelAt 1:40pm on the 16th, the Invercargill estuary at the Stead Street Bridge recorded a level of 2.13 m. This had an annual return period of 1.8 years.

Snow / IceSnow / Ice at Te Anau
Map Location: -45.415428 167.699285
Comments:

CommentTe Anau Basin received its biggest snowfall for years.

References

Bell, R.G; Gorman, R.M. (2003). Overview of Weather and Coastal Hazards in the Northland Region. Part II: Coastal.
Bradley, D. (2002). Storm surge and marine inundation. Environment Southland, Invercargill.
Headline: Heavy rain batters North Island.
The Chronicle, 19 April 1999.
Insurance Councils, The Cost of Weather Loses, Claims History (Updated 2004).
Major weather events in New Zealand, Floods and High Rainfall, Floods to 30 Sept 2005.
Meteorological Society of New Zealand (Inc.) Newsletter 77, June 1999.
www.metservice, notable weather events.govt.nz
Headline: Cat-astrophe averted.
The Northern Advocate, 19 April 1999.
Headline: Dargaville fire brigade run off feet.
The Northern Advocate, 19 April 1999.
Headline: Festivity taken out of Kumara Festival.
The Northern Advocate, 19 April 1999.
Headline: Town flood 'impossible to predict'.
The Northern Advocate, 19 April 1999.
Headline: Ex-mayor floats wooden flood plan.
The Northern Advocate, 26 April 1999.
Headline: Dargaville floods claim toddler's life.
The Northern Advocate, 20 April 1999.
Headline: Firefighters fight floods.
The Northland Times, 19 April 1999.
Headline: Flood victims fear salt is hidden killer.
The Northland Times, 26 April 1999.
Headline: Floodbusters ready with extra sandbags.
The Northland Times, 19 April 1999.
Headline: Only 225 days to summer.
The Northland Times, 19 April 1999.
Headline: Caring councillors flood to victims.
The Northland Times, 20 April 1999.
Headline: Devastated Guy loses $40,000 in just one day.
The Northland Times, 20 April 1999.
Headline: Flood creates 'Highway to hell'.
The Northland Times, 20 April 1999.
Headline: Flooding is such a bad business.
The Northland Times, 20 April 1999.
Headline: Kumara bill could grow to $4 million.
The Northland Times, 20 April 1999.
Headline: Kumara price to double: Grower problems begin to flood in.
The Northland Times, 21 April 1999.
Headline: Insurance firms brace for huge damage claims.
The Northland Times, 21 April 1999.
Headline: Motorists run into deep trouble.
The Northland Times, 21 April 1999.
Headline: 10 killed in horrific weekend on roads.
www.nzherald.co.nz, 19 April, 1999.
Headline: Flooding could hit more often.
www.nzherald.co.nz, 19 April, 1999.
Headline: Raglan saturated as wind-whipped tides lap at doors.
www.nzherald.co.nz, 19 April, 1999, 12:00am.
Headline: Mayor: lets think about higher ground.
www.nzherald.co.nz, 27 September, 1999.