NZ Historic Weather Events Catalog

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SevereFebruary-March 2004 North Island Ex-tropical Cyclone Ivy ( 2004-02-27 )

100 years

Ex-tropical Cyclone Ivy brought high rainfall, flooding and high winds to much of the North Island. Flooding in Waikato rivers caused evacuations and extensive damage to roads and property. In Auckland, high winds caused power cuts and sank boats.

North Island

Multi HazardMulti Hazard
Duration:   4  days - From 28th February to 2nd March.
Comments:

CauseA deep low over the Tasman Sea moved slowly south-eastwards, crossing the South Island on the night of the 28th. Its associated front was preceded by a very moist, strong northerly flow. The front moved slowly across central and northern New Zealand and linked up with the remains of Tropical Cyclone Ivy, which moved rapidly south-south-east passing just east of East Cape early on the afternoon of the 29th. The presence of Cyclone Ivy ensured very humid tropical air was brought down onto the country.

CauseTwo deep depressions converged on New Zealand. On the 28th, the effects of the first one were being felt in terms of heavy rain and strong winds in the northern North Island as it approached from the Tasman Sea from the south-west. The second depression consisted of the remnants of Tropical Cyclone Ivy. It was expected to pass just east of the North Island on the 29th.

Affected LifelineNorth Island motorists were warned to stay home on the 29th, with flooding and slips closing roads across the island. Bridges were washed out and 13 roads around North Island were closed, including State Highway 1 between Taupo and Turangi.

Heavy RainHeavy Rain
Comments:

Physical CharacteristicRainfall totalling more than 100 mm (10.0 cm) fell in parts of Northland, Coromandel, Waikato, Bay of Plenty, King Country and Taranaki.

Northland

Heavy RainHeavy Rain at Northland
Comments:

Physical CharacteristicParts of Northland received up to 200 mm (20.0 cm) of rain in two days.

FloodingFlooding
Comments:

CommentSignificant flooding occurred in Northland.

Affected LifelineState Highway 1 was closed south of Kaitaia by flooding on the 28th.

Multi HazardMulti Hazard at Motukawanui Island
Map Location: -34.995305 173.943358
Comments:

ImpactEight people from a yacht were stranded on Motukawanui Island, off Matauri Bay, while Cyclone Ivy passed.

Auckland

FloodingFlooding at Auckland
Comments:

CommentSurface flooding occurred around Auckland.

High Wind GustsHigh Wind / Gust
Comments:

DamageTrees were blown down.

ImpactAuckland City Council cancelled a number of events on the 28th, including the International Cultural Festival at Potters Park in Mt Eden, the Kantuna Salsa Festival at Tahaki Reserve and music in the park events at the Domain Band Rotunda.

Affected LifelineBad weather left about 3,000 Auckland homes without power on the 28th. Power was restored by the morning of the 9th. About 2000 homes in South Auckland lost power.

Physical CharacteristicAuckland had winds of up to 40 knots (74 km/hr) on the 28th.

High Wind GustsHigh Wind / Gust at Clevedon
Map Location: -36.993102 175.038415
Comments:

Affected LifelineAbout 300 homes in Clevedon were without electricity on the morning of the 28th, but it was restored in the afternoon.

High Wind GustsHigh Wind / Gust at Hobson Bay
Map Location: -36.858173 174.79445
Comments:

DamageAt least three boats went down in Hobson Bay and another three broke from their moorings on the 28th.

High Wind GustsHigh Wind / Gust at Mangere East
Map Location: -36.970956 174.814225
Comments:

Affected LifelineResidents in Mangere East were without power on the morning of the 28th due to faults.

High Wind GustsHigh Wind / Gust at Okahu Bay
Map Location: -36.848393 174.813262
Comments:

DamageA boat sank in Okahu Bay on the 29th.

High Wind GustsHigh Wind / Gust at Takaknini
Map Location: -37.04136 174.912765
Comments:

Affected Lifeline800 residents were without power in Takanini after a power pole was hit by a car.

High Wind GustsHigh Wind / Gust at Waiwera
Map Location: -36.545942 174.70764
Comments:

Affected LifelinePower was cut in Waiwera. Power had been restored to about 80 per cent of the customers by the afternoon, with 150 still without power.

High Wind GustsHigh Wind / Gust at Whangaparaoa
Map Location: -36.636548 174.733924
Comments:

Physical CharacteristicWinds were up to 58 knots (107 km/hr) off the Whangaparaoa peninsula on the 28th.

Waikato

Multi HazardMulti Hazard at Waikato
Comments:

Affected LifelineRoad damage and closures were extensive across some parts of the Otorohanga, Waikato and Waitomo districts.

Affected LifelineExtensive damage was done to roads in the Otorohanga District. Five roads remained closed on the 3rd.

Affected LifelineState Highway 3 near Otorohanga and through the Awakino Gorge was closed. State Highway 4 to Taumarunui was closed. State Highway 31 to Kawhia was closed.

Affected LifelineSevere roading damage occurred in the Waitomo District.

Total DamageDamage in the Waikato totalled $4 million ($4,600,000 2008 dollars).

Damage CostFlood damage costs to Environment Waikato (for repairs to Tongariro River, Tauranga-Taupo River and Waipa River) were estimated at $2 million ($2,300,000 2008 dollars).

Damage CostFlood damage costs to Otorohanga District Council roads were estimated at $0.4 million ($460,000 2008 dollars).

Damage CostFlood damage costs to Waitomo District Council roads were estimated at $0.008 million ($9000 2008 dollars).

Damage CostFlood damage costs to Taupo District Council (for repairs to stormwater and sewage pumps and local roads) were estimated at $0.05 million ($58,000 2008 dollars).

Damage CostFlood damage costs to Waipa District Council roads were estimated at $0.2 million ($230,000 2008 dollars).

Damage CostFlood damage costs to State Highways 1 and 3 were estimated at $0.2 million ($230,000 2008 dollars).

Heavy RainHeavy Rain
Comments:

Physical CharacteristicThe heaviest rain fell in the upper reaches of the Tongariro and Waipa Rivers, where intensities reached 27 mm/hr (2.7 cm/hr).

FloodingFlooding
Comments:

CommentFrom 11pm on the 28th, there was significant flooding caused by swollen rivers at the southern end of the Lake Taupo catchment area feeding into the Tongariro River.

Affected LifelineState Highway 1 was closed from Taupo to Turangi.

CommentThe flow in the Tongariro and Upper Waipa Rivers had a Return Period of about 100 years.

CommentThe flow in the Lower Waikato River had a Return Period of only 20 years.

CommentEstimated Return Periods ranged from 40-100 years for upper catchment areas to 5-10 years in lower catchment areas.

CommentThe floods were equivalent to the 1958 floods.

Area5000 ha of Waipa productive farmland was inundated.

Area800 ha of Waikato productive farmland was inundated.

Multi HazardMulti Hazard at Awakino
Map Location: -38.651977 174.628631
Comments:

Affected LifelineState Highway 3 was closed at Awakino.

Heavy RainHeavy Rain at Castle Rock
Map Location: -36.80316 175.561988
Comments:

Physical CharacteristicCastle Rock (Coromandel) recorded 205 mm (20.5 cm) of rain in 36 hours from the 27th to the 29th.

Heavy RainHeavy Rain at Hamilton
Map Location: -37.780816 175.272836
Comments:

Physical CharacteristicHamilton recorded 93 mm (9.3 cm) of rain in 36 hours from the 27th to the 29th.

FloodingFlooding
Comments:

Peak River LevelThe Waikato River at Hamilton reached a level of 16.26 m.

Peak River FlowThe Waikato River at Hamilton had a peak flow of 708 cumecs. This had a return period of 20 years.

FloodingFlooding at Huntly
Map Location: -37.559936 175.162622
Comments:

Peak River LevelThe Waikato River at Huntly reached a peak level of 10.57 m.

Peak River FlowThe Waikato River at Huntly had a peak flow of 1277 cumecs. Ths had a return period of 20 years.

Heavy RainHeavy Rain at Kaimai Range
Map Location: -37.870454 175.932502
Comments:

Physical CharacteristicKaimai (Hauraki Plains) recorded 165 mm (16.5 cm) of rain in 36 hours from the 27th to the 29th.

Multi HazardMulti Hazard at Karamu
Map Location: -37.885808 175.138078
Comments:

Affected LifelinePeople living near Karamu, south of Whatawhata, were isolated.

FloodingFlooding at Karapiro
Map Location: -37.918771 175.541899
Comments:

Peak River LevelThe Waikato River at Karapiro had a peak flow of 611 cumecs. This had a mean annual return period.

Heavy RainHeavy Rain at Kuratau
Map Location: -38.890451 175.77429
Comments:

Physical CharacteristicKuratau recorded 123 mm (12.3 cm) of rain in 36 hours from the 27th to the 29th.

FloodingFlooding at Lake Taupo
Map Location: -38.783172 176.021652
Comments:

Peak Water LevelLake Taupo reached a peak level of 357.35 m. This had a return period of 10 years.

FloodingFlooding at Lake Waikare
Map Location: -37.435468 175.189289
Comments:

Peak River LevelThe Waikato River at Lake Waikare reached a peak level of 5.8 m.

Heavy RainHeavy Rain at Mangakowhitiwhiti Stream
Map Location: -38.96283 175.942877
Comments:

Physical CharacteristicKiko Road (Taupo Basin) recorded 65 mm (6.5 cm) of rain in 36 hours from the 27th to the 29th.

Heavy RainHeavy Rain at Mangatangi
Map Location: -37.201137 175.187605
Comments:

Physical CharacteristicMangatangi recorded 155 mm (15.5 cm) of rain in 36 hours from the 27th to the 29th.

Heavy RainHeavy Rain at Mangatoetoe Stream
Map Location: -38.490533 176.124856
Comments:

Physical CharacteristicMangatoetoe (Taupo basin) recorded 289 mm (28.9 cm) of rain in 36 hours from the 27th to the 29th (Return Period more than 150 years).

Heavy RainHeavy Rain at Maukoro Canal
Map Location: -37.407327 175.495777
Comments:

Physical CharacteristicMaukoro Landing recorded 79 mm (7.9 cm) of rain in 36 hours from the 27th to the 29th.

Heavy RainHeavy Rain at Maungakawa Hill
Map Location: -37.414041 175.395994
Comments:

Physical CharacteristicMaungakawa recorded 94 mm (9.4 cm) of rain in 36 hours from the 27th to the 29th.

FloodingFlooding at Mercer
Map Location: -37.280396 175.051333
Comments:

Peak River LevelThe Waikato River at Mercer reached a peak level of 5.015 m.

Peak River FlowThe Waikato River at Mercer had a peak flow of 1260 cumecs. This had a return period of 20 years.

FloodingFlooding at Meremere
Map Location: -37.319758 175.067164
Comments:

ImpactA car was swept away by the swollen Waikato River near Meremere. The driver escaped unhurt.

Heavy RainHeavy Rain at Ngaroma
Map Location: -38.298287 175.561464
Comments:

Physical CharacteristicNgaroma recorded 218 mm (21.8 cm) of rain in 36 hours from the 27th to the 29th (Return Period 80 years).

Physical CharacteristicNgaroma recorded 183.5 mm (18.4 cm) of rain in 24 hours (Return Period 55 years).

FloodingFlooding at Ngaruawahia
Map Location: -37.668325 175.128
Comments:

Peak River LevelThe Waikato River at Ngaruawahia reached a peak level of 13.15 m.

Peak River FlowThe Waikato River at Ngaruawahia had a peak flow of 1265 cumecs. This had a return period of 20 years.

FloodingFlooding at Oruatua
Map Location: -38.912746 175.892292
Comments:

Evacuees15 homes were evacuated at Oruatua, adjacent to the Tauranga-Taupo River, on the 29th.

ImpactThe basement of one house was inundated.

Property DamageFlood damage costs to Oruatua private properties (one basement flooded) were estimated at $0.005 million ($6000 2008 dollars).

Heavy RainHeavy Rain at Otewa
Map Location: -38.227106 175.289742
Comments:

Physical CharacteristicOtewa recorded 142 mm (14.2 cm) of rain in 36 hours from the 27th to the 29th.

FloodingFlooding
Comments:

Peak River LevelThe Waipa River at Otewa reached a peak level of 5.58 m.

Peak River FlowThe Waipa River at Otewa had a peak flow of 400 cumecs.

FloodingFlooding at Otorohanga
Map Location: -38.174188 175.209784
Comments:

CommentThe Waipa River flooded a Otorohanga.

ImpactOtorohanga Primary School and six surrounding houses were inudated. Every classroom in the school was flooded, some up to waist deep.

Evacuees12 homes were evacuated at Otorohanga on the 2nd.

ImpactFarmland was inundated.

Property DamageFlooding severely damaged homes in Otorohanga.

Property DamageFlood damage costs to Otorohanga Primary School (for repairs to buildings and grounds) were estimated at $0.25 million ($290,000 2008 dollars).

Property DamageFlood damage costs to Otorohanga private properties (six houses inundated) were estimated at $0.1 million ($120,000 2008 dollars).

Peak River LevelThe Waipa River at Otorohanga reached a peak level of 34.02 m.

Peak River FlowThe Waipa River at Otorohanga had a peak flow of 615 cumecs.This had a return period of 100 years.

LandslideLandslide
Comments:

Affected LifelineThe Waitomo Valley Road, between Otorohanga and Waitomo, made impassable by a major slip. A gaping hole 20m across was left in the road.

Heavy RainHeavy Rain at The Pinnacles
Map Location: -37.047261 175.721518
Comments:

Physical CharacteristicThe Pinnacles recorded 290 mm (29.0 cm) of rain in 36 hours from the 27th to the 29th.

Heavy RainHeavy Rain at Pokaiwhenua Stream
Map Location: -38.243025 175.97552
Comments:

Physical CharacteristicPokaiwhenua recorded 59 mm (5.9 cm) of rain in 36 hours from the 27th to the 29th.

Heavy RainHeavy Rain at Puniu River
Map Location: -38.018362 175.249264
Comments:

Physical CharacteristicPuniu recorded 98 mm (9.8 cm) of rain in 36 hours from the 27th to the 29th.

Peak River LevelThe Waipa River at Puniu reached a peak level of 14.23 m.

Peak River FlowThe Waipa River at Puniu had a peak flow of 245 cumecs.

FloodingFlooding at Rangiriri
Map Location: -37.43113 175.134897
Comments:

Peak River LevelThe Waikato River at Rangiriri reached a peak level of 8.47 m.

Peak River FlowThe Waikato River at Rangiriri had a peak flow of 1210 cumecs. This had a return period of 20 years.

FloodingFlooding at Rauroa farm
Map Location: -38.591021 174.783328
Comments:

Peak River LevelThe Awakino River reached a peak level of 5.72 m.

Peak River FlowThe Awakino River had a peak flow of 300 cumecs. This had a return period of 10 years.

Heavy RainHeavy Rain at Ruatahuna Hill
Map Location: -39.108686 175.949661
Comments:

Physical CharacteristicRuatahuna (Taupo basin) recorded 169 mm (16.9 cm) of rain in 36 hours from the 27th to the 29th.

FloodingFlooding at Taupo
Map Location: -38.69531 176.070758
Comments:

Stock DamageThe Taupo trout hatchery was badly hit, with most fish being washed out of their pens and down the river.

FloodingFlooding at Tauranga-Taupo River
Map Location: -39.025001 176.029882
Comments:

Peak River LevelThe Tauranga-Taupo River reached a peak level of 2.4 m.

Peak River FlowThe Tauranga-Taupo River had a peak flow of 195 cumecs. This had a return period of 20 years.

Damage CostTauranga-Taupo River flood repair costs were estimated at $310,000 ($360,000 2008 dollars).

Heavy RainHeavy Rain at Te Aroha
Map Location: -37.536498 175.715457
Comments:

Physical CharacteristicTe Aroha recorded 57 mm (5.7 cm) of rain in 36 hours from the 27th to the 29th.

Heavy RainHeavy Rain at Te Kuiti
Map Location: -38.3277 175.172348
Comments:

Physical CharacteristicTe Kuiti recorded 162 mm (16.2 cm) of rain in 36 hours from the 27th to the 29th.

FloodingFlooding
Comments:

Peak River LevelThe Waipa River at Te Kuiti reached a peak level of 52.82 m.

Peak River FlowThe Waipa River at Te Kuiti had a peak flow of 135 cumecs. This had a return period of 20 years.

FloodingFlooding at Te Pahu
Map Location: -37.918754 175.135679
Comments:

Affected LifelinePeople living in the Te Pahu area were isolated by flood waters.

FloodingFlooding at Tongariro River
Map Location: -39.107134 175.833321
Comments:

Peak River LevelThe Tongariro River reached a peak level of 4.5 m.

Peak River FlowThe Tongariro River had a peak flow of 1400 cumecs. This had a return period of 100 years.

Heavy RainHeavy Rain at Turangi
Map Location: -38.98423 175.791331
Comments:

Physical CharacteristicTurangi recorded 146 mm (14.6 cm) of rain in 36 hours from the 27th to the 29th.

FloodingFlooding
Comments:

EvacueesAt Turangi, 90 people were evacuated from 50 homes on the 29th.

ImpactThe Tongariro River overflowed and flooded up to 20 Turangi homes.

Physical CharacteristicSome residents along the river at Turangi reported water rising to above their window sills, and furniture was seen floating in the streets.

DamageThe flood washed away footbridges and vegetation.

Affected LifelineThe sewerage system was under pressure.

Property DamageAbout 15 homes were uninhabitable.

Property DamageFlood damage costs to Turangi private properties were estimated at $0.75 million ($870,000 2008 dollars).

Heavy RainHeavy Rain at Waitanguru
Map Location: -38.385565 174.864428
Comments:

Physical CharacteristicWaitanguru recorded 161 mm (16.1 cm) of rain in 36 hours from the 27th to the 29th.

FloodingFlooding at Waitomo Caves
Map Location: -38.259868 175.114207
Comments:

ImpactThe Waitomo Caves were closed for four consecutive days, a rare occurrence.

ImpactOne house needed to be shifted as floods threatened its foundations.

Affected LifelineThe area was without water after the floods washed away recently installed pumps.

Property DamageFlooding severely damaged homes in Waitomo.

LandslideLandslide
Comments:

Property DamageA house at Waitomo was damaged by a landslip of mud, which flattened a garage and a concrete water tank.

FloodingFlooding at Whangamarino
Map Location: -37.347207 175.116526
Comments:

Peak River LevelThe Waikato River at Whangamarino reached a peak level of 4.55 m.

FloodingFlooding at Whangamarino Redoubt
Map Location: -37.292367 175.061839
Comments:

Peak River LevelThe Waikato River at the Control Structure reached a level of 5.43 m.

Peak River FlowThe Waikato River at the Control Structure had a peak flow of 1278 cumecs. This had a return period of 20 years.

Heavy RainHeavy Rain at Wharekiri Stream
Map Location: -38.473539 175.524922
Comments:

Physical CharacteristicWharekiri (Waipa) recorded 154 mm (15.4 cm) of rain in 36 hours from the 27th to the 29th.

FloodingFlooding at Whatawhata
Map Location: -37.796174 175.158608
Comments:

Peak River LevelThe Waipa River at Whatawhata reached a peak level of 19.52 m.

Peak River FlowThe Waipa River at Whatawhata had a peak flow of 765 cumecs. This had a return period of 20 years.

Affected LifelineUp to 30 families on Karikariki Road, near Whatawhata, were isolated by flood waters from the Waipa River.

Bay of Plenty

Heavy RainHeavy Rain at Bay of Plenty
Comments:

CommentHigh rainfall occurred in the Bay of Plenty.

Maritime / CoastalMaritime / Coastal at Omaio Bay
Map Location: -37.801384 177.633924
Comments:

ImpactTwo Whakatane surfers went missing in the water at Omaiao Bay, near Te Kaha, on the night of the 29th. They were feared dead after an aircraft search for them had to be called off because of the bad weather.

Hawke's Bay

FloodingFlooding at Hastings
Map Location: -39.635771 176.828045
Comments:

Affected LifelineSurface flooding occurred in Hastings on the 28th.

Taranaki

Heavy RainHeavy Rain at Taranaki
Comments:

CommentHigh rainfall occurred in Taranaki.

LandslideLandslide at Oakura
Map Location: -39.115805 173.953382
Comments:

Property DamageAfter weeks of heavy rain and a heavy rain storm on the 28th, a massive landslide took a large chunk of land from a property in Surrey Hill Road, Oakura. The water tank and pump shed were also brought down. The slip was just metres away from the house. The residents were forced to evacuate and their home became uninhabitable.

Manawatu-Wanganui

Multi HazardMulti Hazard at Manawatu-Wanganui
Comments:

Affected LifelineState Highway 4 between Wanganui and Raetihi was closed.

FloodingFlooding
Comments:

CommentRivers in Manuwatu and Wanganui came close to bursting their banks. The Rangitikei, Whanganui and Manawatu Rivers were swollen by the rain.

Multi HazardMulti Hazard at Manawatu Gorge
Map Location: -40.31792 175.798027
Comments:

Affected LifelineState Highway 3 through the Manawatu Gorge was affected.

Wellington

FloodingFlooding at Wellington
Comments:

Affected LifelinePolice reported surface flooding on State Highway 2 through the Hutt Valley on the 28th.

FloodingFlooding at Waikanae
Map Location: -40.866454 175.054994
Comments:

Affected LifelinePolice reported surface flooding in Waikanae on the 28th.

References

Environment Waikato Flood Document (CD).
http://www.ew.govt.nz/publications/technicalreports/documents/TR04-06.pdf. Environment Waikato Technical Report 2004/06.
Major weather events in New Zealand, Floods and High Rainfall, Floods to 30 Sept 2005.
Major weather events in New Zealand, Floods and High Rainfall, Floods to 31 May 2006.
Headline: Batten down the hatches.
www.nzherald.co.nz, 28 February 2004.
Headline: Storm sinks boats, cuts power and causes surface flooding.
www.nzherald.co.nz, 28 February 2004, 3:30pm.
Headline: Motorists warned to stay home during storm.
The New Zealand Herald, 29 February 2004.
Headline: Summer's cruel farewell.
The New Zealand Herald, 1 March 2004.
Headline: Flood fears easing in Waikato.
The New Zealand Herald, 2 March 2004.
New Zealand Meteorological Service. (2008). Meteorology of Extreme Rainfalls in New Zealand (Mark Pascoe, Ed.).
Headline: Waikato latest area on flood.
The Northern Advocate, 2 March 2004.
Headline: Weather eye out for heavy rain.
The Northern Advocate, 6 July 2005.
Headline: Neighbours square up in court over disastrous slip.
www.stuff.co.nz, Source: Taranaki Daily News, 4 November 2008.
Headline: Turangi families flee; watch now on Waikato.
The Waikato Times, 1 March 2004.
Headline: Swollen rivers build to peak.
The Waikato Times, 2 March 2004.
Headline: Flooding shuts Waitomo Caves.
The Waikato Times, 3 March 2004.
Headline: Where was our warning?
The Waikato Times, 4 March 2004.

SevereFebruary-March 2004 North Island Ex-tropical Cyclone Ivy ( 2004-02-27 )

100 years

Ex-tropical Cyclone Ivy brought high rainfall, flooding and high winds to much of the North Island. Flooding in Waikato rivers caused evacuations and extensive damage to roads and property. In Auckland, high winds caused power cuts and sank boats.

North Island

Multi HazardMulti Hazard
Duration:   4  days - From 28th February to 2nd March.
Comments:

CauseA deep low over the Tasman Sea moved slowly south-eastwards, crossing the South Island on the night of the 28th. Its associated front was preceded by a very moist, strong northerly flow. The front moved slowly across central and northern New Zealand and linked up with the remains of Tropical Cyclone Ivy, which moved rapidly south-south-east passing just east of East Cape early on the afternoon of the 29th. The presence of Cyclone Ivy ensured very humid tropical air was brought down onto the country.

CauseTwo deep depressions converged on New Zealand. On the 28th, the effects of the first one were being felt in terms of heavy rain and strong winds in the northern North Island as it approached from the Tasman Sea from the south-west. The second depression consisted of the remnants of Tropical Cyclone Ivy. It was expected to pass just east of the North Island on the 29th.

Affected LifelineNorth Island motorists were warned to stay home on the 29th, with flooding and slips closing roads across the island. Bridges were washed out and 13 roads around North Island were closed, including State Highway 1 between Taupo and Turangi.

Heavy RainHeavy Rain
Comments:

Physical CharacteristicRainfall totalling more than 100 mm (10.0 cm) fell in parts of Northland, Coromandel, Waikato, Bay of Plenty, King Country and Taranaki.

Northland

Heavy RainHeavy Rain at Northland
Comments:

Physical CharacteristicParts of Northland received up to 200 mm (20.0 cm) of rain in two days.

FloodingFlooding
Comments:

CommentSignificant flooding occurred in Northland.

Affected LifelineState Highway 1 was closed south of Kaitaia by flooding on the 28th.

Multi HazardMulti Hazard at Motukawanui Island
Map Location: -34.995305 173.943358
Comments:

ImpactEight people from a yacht were stranded on Motukawanui Island, off Matauri Bay, while Cyclone Ivy passed.

Auckland

FloodingFlooding at Auckland
Comments:

CommentSurface flooding occurred around Auckland.

High Wind GustsHigh Wind / Gust
Comments:

DamageTrees were blown down.

ImpactAuckland City Council cancelled a number of events on the 28th, including the International Cultural Festival at Potters Park in Mt Eden, the Kantuna Salsa Festival at Tahaki Reserve and music in the park events at the Domain Band Rotunda.

Affected LifelineBad weather left about 3,000 Auckland homes without power on the 28th. Power was restored by the morning of the 9th. About 2000 homes in South Auckland lost power.

Physical CharacteristicAuckland had winds of up to 40 knots (74 km/hr) on the 28th.

High Wind GustsHigh Wind / Gust at Clevedon
Map Location: -36.993102 175.038415
Comments:

Affected LifelineAbout 300 homes in Clevedon were without electricity on the morning of the 28th, but it was restored in the afternoon.

High Wind GustsHigh Wind / Gust at Hobson Bay
Map Location: -36.858173 174.79445
Comments:

DamageAt least three boats went down in Hobson Bay and another three broke from their moorings on the 28th.

High Wind GustsHigh Wind / Gust at Mangere East
Map Location: -36.970956 174.814225
Comments:

Affected LifelineResidents in Mangere East were without power on the morning of the 28th due to faults.

High Wind GustsHigh Wind / Gust at Okahu Bay
Map Location: -36.848393 174.813262
Comments:

DamageA boat sank in Okahu Bay on the 29th.

High Wind GustsHigh Wind / Gust at Takaknini
Map Location: -37.04136 174.912765
Comments:

Affected Lifeline800 residents were without power in Takanini after a power pole was hit by a car.

High Wind GustsHigh Wind / Gust at Waiwera
Map Location: -36.545942 174.70764
Comments:

Affected LifelinePower was cut in Waiwera. Power had been restored to about 80 per cent of the customers by the afternoon, with 150 still without power.

High Wind GustsHigh Wind / Gust at Whangaparaoa
Map Location: -36.636548 174.733924
Comments:

Physical CharacteristicWinds were up to 58 knots (107 km/hr) off the Whangaparaoa peninsula on the 28th.

Waikato

Multi HazardMulti Hazard at Waikato
Comments:

Affected LifelineRoad damage and closures were extensive across some parts of the Otorohanga, Waikato and Waitomo districts.

Affected LifelineExtensive damage was done to roads in the Otorohanga District. Five roads remained closed on the 3rd.

Affected LifelineState Highway 3 near Otorohanga and through the Awakino Gorge was closed. State Highway 4 to Taumarunui was closed. State Highway 31 to Kawhia was closed.

Affected LifelineSevere roading damage occurred in the Waitomo District.

Total DamageDamage in the Waikato totalled $4 million ($4,600,000 2008 dollars).

Damage CostFlood damage costs to Environment Waikato (for repairs to Tongariro River, Tauranga-Taupo River and Waipa River) were estimated at $2 million ($2,300,000 2008 dollars).

Damage CostFlood damage costs to Otorohanga District Council roads were estimated at $0.4 million ($460,000 2008 dollars).

Damage CostFlood damage costs to Waitomo District Council roads were estimated at $0.008 million ($9000 2008 dollars).

Damage CostFlood damage costs to Taupo District Council (for repairs to stormwater and sewage pumps and local roads) were estimated at $0.05 million ($58,000 2008 dollars).

Damage CostFlood damage costs to Waipa District Council roads were estimated at $0.2 million ($230,000 2008 dollars).

Damage CostFlood damage costs to State Highways 1 and 3 were estimated at $0.2 million ($230,000 2008 dollars).

Heavy RainHeavy Rain
Comments:

Physical CharacteristicThe heaviest rain fell in the upper reaches of the Tongariro and Waipa Rivers, where intensities reached 27 mm/hr (2.7 cm/hr).

FloodingFlooding
Comments:

CommentFrom 11pm on the 28th, there was significant flooding caused by swollen rivers at the southern end of the Lake Taupo catchment area feeding into the Tongariro River.

Affected LifelineState Highway 1 was closed from Taupo to Turangi.

CommentThe flow in the Tongariro and Upper Waipa Rivers had a Return Period of about 100 years.

CommentThe flow in the Lower Waikato River had a Return Period of only 20 years.

CommentEstimated Return Periods ranged from 40-100 years for upper catchment areas to 5-10 years in lower catchment areas.

CommentThe floods were equivalent to the 1958 floods.

Area5000 ha of Waipa productive farmland was inundated.

Area800 ha of Waikato productive farmland was inundated.

Multi HazardMulti Hazard at Awakino
Map Location: -38.651977 174.628631
Comments:

Affected LifelineState Highway 3 was closed at Awakino.

Heavy RainHeavy Rain at Castle Rock
Map Location: -36.80316 175.561988
Comments:

Physical CharacteristicCastle Rock (Coromandel) recorded 205 mm (20.5 cm) of rain in 36 hours from the 27th to the 29th.

Heavy RainHeavy Rain at Hamilton
Map Location: -37.780816 175.272836
Comments:

Physical CharacteristicHamilton recorded 93 mm (9.3 cm) of rain in 36 hours from the 27th to the 29th.

FloodingFlooding
Comments:

Peak River LevelThe Waikato River at Hamilton reached a level of 16.26 m.

Peak River FlowThe Waikato River at Hamilton had a peak flow of 708 cumecs. This had a return period of 20 years.

FloodingFlooding at Huntly
Map Location: -37.559936 175.162622
Comments:

Peak River LevelThe Waikato River at Huntly reached a peak level of 10.57 m.

Peak River FlowThe Waikato River at Huntly had a peak flow of 1277 cumecs. Ths had a return period of 20 years.

Heavy RainHeavy Rain at Kaimai Range
Map Location: -37.870454 175.932502
Comments:

Physical CharacteristicKaimai (Hauraki Plains) recorded 165 mm (16.5 cm) of rain in 36 hours from the 27th to the 29th.

Multi HazardMulti Hazard at Karamu
Map Location: -37.885808 175.138078
Comments:

Affected LifelinePeople living near Karamu, south of Whatawhata, were isolated.

FloodingFlooding at Karapiro
Map Location: -37.918771 175.541899
Comments:

Peak River LevelThe Waikato River at Karapiro had a peak flow of 611 cumecs. This had a mean annual return period.

Heavy RainHeavy Rain at Kuratau
Map Location: -38.890451 175.77429
Comments:

Physical CharacteristicKuratau recorded 123 mm (12.3 cm) of rain in 36 hours from the 27th to the 29th.

FloodingFlooding at Lake Taupo
Map Location: -38.783172 176.021652
Comments:

Peak Water LevelLake Taupo reached a peak level of 357.35 m. This had a return period of 10 years.

FloodingFlooding at Lake Waikare
Map Location: -37.435468 175.189289
Comments:

Peak River LevelThe Waikato River at Lake Waikare reached a peak level of 5.8 m.

Heavy RainHeavy Rain at Mangakowhitiwhiti Stream
Map Location: -38.96283 175.942877
Comments:

Physical CharacteristicKiko Road (Taupo Basin) recorded 65 mm (6.5 cm) of rain in 36 hours from the 27th to the 29th.

Heavy RainHeavy Rain at Mangatangi
Map Location: -37.201137 175.187605
Comments:

Physical CharacteristicMangatangi recorded 155 mm (15.5 cm) of rain in 36 hours from the 27th to the 29th.

Heavy RainHeavy Rain at Mangatoetoe Stream
Map Location: -38.490533 176.124856
Comments:

Physical CharacteristicMangatoetoe (Taupo basin) recorded 289 mm (28.9 cm) of rain in 36 hours from the 27th to the 29th (Return Period more than 150 years).

Heavy RainHeavy Rain at Maukoro Canal
Map Location: -37.407327 175.495777
Comments:

Physical CharacteristicMaukoro Landing recorded 79 mm (7.9 cm) of rain in 36 hours from the 27th to the 29th.

Heavy RainHeavy Rain at Maungakawa Hill
Map Location: -37.414041 175.395994
Comments:

Physical CharacteristicMaungakawa recorded 94 mm (9.4 cm) of rain in 36 hours from the 27th to the 29th.

FloodingFlooding at Mercer
Map Location: -37.280396 175.051333
Comments:

Peak River LevelThe Waikato River at Mercer reached a peak level of 5.015 m.

Peak River FlowThe Waikato River at Mercer had a peak flow of 1260 cumecs. This had a return period of 20 years.

FloodingFlooding at Meremere
Map Location: -37.319758 175.067164
Comments:

ImpactA car was swept away by the swollen Waikato River near Meremere. The driver escaped unhurt.

Heavy RainHeavy Rain at Ngaroma
Map Location: -38.298287 175.561464
Comments:

Physical CharacteristicNgaroma recorded 218 mm (21.8 cm) of rain in 36 hours from the 27th to the 29th (Return Period 80 years).

Physical CharacteristicNgaroma recorded 183.5 mm (18.4 cm) of rain in 24 hours (Return Period 55 years).

FloodingFlooding at Ngaruawahia
Map Location: -37.668325 175.128
Comments:

Peak River LevelThe Waikato River at Ngaruawahia reached a peak level of 13.15 m.

Peak River FlowThe Waikato River at Ngaruawahia had a peak flow of 1265 cumecs. This had a return period of 20 years.

FloodingFlooding at Oruatua
Map Location: -38.912746 175.892292
Comments:

Evacuees15 homes were evacuated at Oruatua, adjacent to the Tauranga-Taupo River, on the 29th.

ImpactThe basement of one house was inundated.

Property DamageFlood damage costs to Oruatua private properties (one basement flooded) were estimated at $0.005 million ($6000 2008 dollars).

Heavy RainHeavy Rain at Otewa
Map Location: -38.227106 175.289742
Comments:

Physical CharacteristicOtewa recorded 142 mm (14.2 cm) of rain in 36 hours from the 27th to the 29th.

FloodingFlooding
Comments:

Peak River LevelThe Waipa River at Otewa reached a peak level of 5.58 m.

Peak River FlowThe Waipa River at Otewa had a peak flow of 400 cumecs.

FloodingFlooding at Otorohanga
Map Location: -38.174188 175.209784
Comments:

CommentThe Waipa River flooded a Otorohanga.

ImpactOtorohanga Primary School and six surrounding houses were inudated. Every classroom in the school was flooded, some up to waist deep.

Evacuees12 homes were evacuated at Otorohanga on the 2nd.

ImpactFarmland was inundated.

Property DamageFlooding severely damaged homes in Otorohanga.

Property DamageFlood damage costs to Otorohanga Primary School (for repairs to buildings and grounds) were estimated at $0.25 million ($290,000 2008 dollars).

Property DamageFlood damage costs to Otorohanga private properties (six houses inundated) were estimated at $0.1 million ($120,000 2008 dollars).

Peak River LevelThe Waipa River at Otorohanga reached a peak level of 34.02 m.

Peak River FlowThe Waipa River at Otorohanga had a peak flow of 615 cumecs.This had a return period of 100 years.

LandslideLandslide
Comments:

Affected LifelineThe Waitomo Valley Road, between Otorohanga and Waitomo, made impassable by a major slip. A gaping hole 20m across was left in the road.

Heavy RainHeavy Rain at The Pinnacles
Map Location: -37.047261 175.721518
Comments:

Physical CharacteristicThe Pinnacles recorded 290 mm (29.0 cm) of rain in 36 hours from the 27th to the 29th.

Heavy RainHeavy Rain at Pokaiwhenua Stream
Map Location: -38.243025 175.97552
Comments:

Physical CharacteristicPokaiwhenua recorded 59 mm (5.9 cm) of rain in 36 hours from the 27th to the 29th.

Heavy RainHeavy Rain at Puniu River
Map Location: -38.018362 175.249264
Comments:

Physical CharacteristicPuniu recorded 98 mm (9.8 cm) of rain in 36 hours from the 27th to the 29th.

Peak River LevelThe Waipa River at Puniu reached a peak level of 14.23 m.

Peak River FlowThe Waipa River at Puniu had a peak flow of 245 cumecs.

FloodingFlooding at Rangiriri
Map Location: -37.43113 175.134897
Comments:

Peak River LevelThe Waikato River at Rangiriri reached a peak level of 8.47 m.

Peak River FlowThe Waikato River at Rangiriri had a peak flow of 1210 cumecs. This had a return period of 20 years.

FloodingFlooding at Rauroa farm
Map Location: -38.591021 174.783328
Comments:

Peak River LevelThe Awakino River reached a peak level of 5.72 m.

Peak River FlowThe Awakino River had a peak flow of 300 cumecs. This had a return period of 10 years.

Heavy RainHeavy Rain at Ruatahuna Hill
Map Location: -39.108686 175.949661
Comments:

Physical CharacteristicRuatahuna (Taupo basin) recorded 169 mm (16.9 cm) of rain in 36 hours from the 27th to the 29th.

FloodingFlooding at Taupo
Map Location: -38.69531 176.070758
Comments:

Stock DamageThe Taupo trout hatchery was badly hit, with most fish being washed out of their pens and down the river.

FloodingFlooding at Tauranga-Taupo River
Map Location: -39.025001 176.029882
Comments:

Peak River LevelThe Tauranga-Taupo River reached a peak level of 2.4 m.

Peak River FlowThe Tauranga-Taupo River had a peak flow of 195 cumecs. This had a return period of 20 years.

Damage CostTauranga-Taupo River flood repair costs were estimated at $310,000 ($360,000 2008 dollars).

Heavy RainHeavy Rain at Te Aroha
Map Location: -37.536498 175.715457
Comments:

Physical CharacteristicTe Aroha recorded 57 mm (5.7 cm) of rain in 36 hours from the 27th to the 29th.

Heavy RainHeavy Rain at Te Kuiti
Map Location: -38.3277 175.172348
Comments:

Physical CharacteristicTe Kuiti recorded 162 mm (16.2 cm) of rain in 36 hours from the 27th to the 29th.

FloodingFlooding
Comments:

Peak River LevelThe Waipa River at Te Kuiti reached a peak level of 52.82 m.

Peak River FlowThe Waipa River at Te Kuiti had a peak flow of 135 cumecs. This had a return period of 20 years.

FloodingFlooding at Te Pahu
Map Location: -37.918754 175.135679
Comments:

Affected LifelinePeople living in the Te Pahu area were isolated by flood waters.

FloodingFlooding at Tongariro River
Map Location: -39.107134 175.833321
Comments:

Peak River LevelThe Tongariro River reached a peak level of 4.5 m.

Peak River FlowThe Tongariro River had a peak flow of 1400 cumecs. This had a return period of 100 years.

Heavy RainHeavy Rain at Turangi
Map Location: -38.98423 175.791331
Comments:

Physical CharacteristicTurangi recorded 146 mm (14.6 cm) of rain in 36 hours from the 27th to the 29th.

FloodingFlooding
Comments:

EvacueesAt Turangi, 90 people were evacuated from 50 homes on the 29th.

ImpactThe Tongariro River overflowed and flooded up to 20 Turangi homes.

Physical CharacteristicSome residents along the river at Turangi reported water rising to above their window sills, and furniture was seen floating in the streets.

DamageThe flood washed away footbridges and vegetation.

Affected LifelineThe sewerage system was under pressure.

Property DamageAbout 15 homes were uninhabitable.

Property DamageFlood damage costs to Turangi private properties were estimated at $0.75 million ($870,000 2008 dollars).

Heavy RainHeavy Rain at Waitanguru
Map Location: -38.385565 174.864428
Comments:

Physical CharacteristicWaitanguru recorded 161 mm (16.1 cm) of rain in 36 hours from the 27th to the 29th.

FloodingFlooding at Waitomo Caves
Map Location: -38.259868 175.114207
Comments:

ImpactThe Waitomo Caves were closed for four consecutive days, a rare occurrence.

ImpactOne house needed to be shifted as floods threatened its foundations.

Affected LifelineThe area was without water after the floods washed away recently installed pumps.

Property DamageFlooding severely damaged homes in Waitomo.

LandslideLandslide
Comments:

Property DamageA house at Waitomo was damaged by a landslip of mud, which flattened a garage and a concrete water tank.

FloodingFlooding at Whangamarino
Map Location: -37.347207 175.116526
Comments:

Peak River LevelThe Waikato River at Whangamarino reached a peak level of 4.55 m.

FloodingFlooding at Whangamarino Redoubt
Map Location: -37.292367 175.061839
Comments:

Peak River LevelThe Waikato River at the Control Structure reached a level of 5.43 m.

Peak River FlowThe Waikato River at the Control Structure had a peak flow of 1278 cumecs. This had a return period of 20 years.

Heavy RainHeavy Rain at Wharekiri Stream
Map Location: -38.473539 175.524922
Comments:

Physical CharacteristicWharekiri (Waipa) recorded 154 mm (15.4 cm) of rain in 36 hours from the 27th to the 29th.

FloodingFlooding at Whatawhata
Map Location: -37.796174 175.158608
Comments:

Peak River LevelThe Waipa River at Whatawhata reached a peak level of 19.52 m.

Peak River FlowThe Waipa River at Whatawhata had a peak flow of 765 cumecs. This had a return period of 20 years.

Affected LifelineUp to 30 families on Karikariki Road, near Whatawhata, were isolated by flood waters from the Waipa River.

Bay of Plenty

Heavy RainHeavy Rain at Bay of Plenty
Comments:

CommentHigh rainfall occurred in the Bay of Plenty.

Maritime / CoastalMaritime / Coastal at Omaio Bay
Map Location: -37.801384 177.633924
Comments:

ImpactTwo Whakatane surfers went missing in the water at Omaiao Bay, near Te Kaha, on the night of the 29th. They were feared dead after an aircraft search for them had to be called off because of the bad weather.

Hawke's Bay

FloodingFlooding at Hastings
Map Location: -39.635771 176.828045
Comments:

Affected LifelineSurface flooding occurred in Hastings on the 28th.

Taranaki

Heavy RainHeavy Rain at Taranaki
Comments:

CommentHigh rainfall occurred in Taranaki.

LandslideLandslide at Oakura
Map Location: -39.115805 173.953382
Comments:

Property DamageAfter weeks of heavy rain and a heavy rain storm on the 28th, a massive landslide took a large chunk of land from a property in Surrey Hill Road, Oakura. The water tank and pump shed were also brought down. The slip was just metres away from the house. The residents were forced to evacuate and their home became uninhabitable.

Manawatu-Wanganui

Multi HazardMulti Hazard at Manawatu-Wanganui
Comments:

Affected LifelineState Highway 4 between Wanganui and Raetihi was closed.

FloodingFlooding
Comments:

CommentRivers in Manuwatu and Wanganui came close to bursting their banks. The Rangitikei, Whanganui and Manawatu Rivers were swollen by the rain.

Multi HazardMulti Hazard at Manawatu Gorge
Map Location: -40.31792 175.798027
Comments:

Affected LifelineState Highway 3 through the Manawatu Gorge was affected.

Wellington

FloodingFlooding at Wellington
Comments:

Affected LifelinePolice reported surface flooding on State Highway 2 through the Hutt Valley on the 28th.

FloodingFlooding at Waikanae
Map Location: -40.866454 175.054994
Comments:

Affected LifelinePolice reported surface flooding in Waikanae on the 28th.

References

Environment Waikato Flood Document (CD).
http://www.ew.govt.nz/publications/technicalreports/documents/TR04-06.pdf. Environment Waikato Technical Report 2004/06.
Major weather events in New Zealand, Floods and High Rainfall, Floods to 30 Sept 2005.
Major weather events in New Zealand, Floods and High Rainfall, Floods to 31 May 2006.
Headline: Batten down the hatches.
www.nzherald.co.nz, 28 February 2004.
Headline: Storm sinks boats, cuts power and causes surface flooding.
www.nzherald.co.nz, 28 February 2004, 3:30pm.
Headline: Motorists warned to stay home during storm.
The New Zealand Herald, 29 February 2004.
Headline: Summer's cruel farewell.
The New Zealand Herald, 1 March 2004.
Headline: Flood fears easing in Waikato.
The New Zealand Herald, 2 March 2004.
New Zealand Meteorological Service. (2008). Meteorology of Extreme Rainfalls in New Zealand (Mark Pascoe, Ed.).
Headline: Waikato latest area on flood.
The Northern Advocate, 2 March 2004.
Headline: Weather eye out for heavy rain.
The Northern Advocate, 6 July 2005.
Headline: Neighbours square up in court over disastrous slip.
www.stuff.co.nz, Source: Taranaki Daily News, 4 November 2008.
Headline: Turangi families flee; watch now on Waikato.
The Waikato Times, 1 March 2004.
Headline: Swollen rivers build to peak.
The Waikato Times, 2 March 2004.
Headline: Flooding shuts Waitomo Caves.
The Waikato Times, 3 March 2004.
Headline: Where was our warning?
The Waikato Times, 4 March 2004.