NZ Historic Weather Events Catalog

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ExtremeJanuary 2002 North Island and Upper South Island Thunderstorms ( 2002-01-09 )

100 years

Thunderstorms brought lightning, heavy rain and flooding to many parts of the North Island and upper South Island. Wellington and Hawke's Bay were the worst affected regions, with extreme rainfalls causing flooding of properties and streets. A person in Auckland was treated for an eye injury caused by a sewage overflow.

New Zealand

Multi HazardMulti Hazard at New Zealand
Duration:   2  days - From the 9th to the 10th of January.
Comments:

CauseA shallow trough of low pressure containing humid, unstable air and light, and convergent low-level winds.

North Island

Multi HazardMulti Hazard at North Island
Comments:

CommentThunderstorms, some hail and surface flooding occurred over Wanganui, Manawatu, and the central and eastern North Island on the 9th/10th.

CommentUnstable weather conditions generated a devastating storm that hit the lower North Island on the night of the 10th. A lot of afternoon convective thunderstorms had developed.

Auckland

LightningLightning at Auckland
Comments:

CommentThunderstorms passed over Auckland overnight on the 9th/10th.

Heavy RainHeavy Rain
Comments:

CommentHeavy rain fell in Auckland overnight on the 9th/10th.

CommentHeavy rain fell for 30 minutes between 8pm and 8:30pm on the 9th.

Physical CharacteristicAuckland recieved 20 mm (2.0 cm) of rain on the night of the 9th.

Physical CharacteristicAuckland received about 100 mm (10.0 cm) of rain in 24 hours.

FloodingFlooding
Comments:

CommentFlash floods occurred in Auckland after torrential rain on the 9th.

CommentHalf Moon Bay and Howick were the most affected.

InjuriesA person was treated by ambulance officers for "severe eye irritation" caused by a sewage overflow.

Multi HazardMulti Hazard
Comments:

ImpactFirefighters received over 30 weather-related calls from St Heliers, Howick, Glen Innes and Half Moon Bay alone.

FloodingFlooding at Ellerslie
Map Location: -36.898442 174.811766
Comments:

Affected LifelineFlooding was reported on the Ellerslie-Panmure Highway.

FloodingFlooding at Glen Innes
Map Location: -36.875037 174.862762
Comments:

Affected LifelineThere were reports from 7:30pm of surface flooding in Merton Road, Glen Innes.

FloodingFlooding at Half Moon Bay
Map Location: -36.8834 174.900013
Comments:

ImpactTwelve homes in Half Moon Bay were flooded.

FloodingFlooding at Howick
Map Location: -36.896907 174.926193
Comments:

Affected LifelineA small creek overflowed and flooded Angelo Road in Howick.

Peak Water LevelAngelo Road was covered in up to 45 cm of water at the height of downpour.

FloodingFlooding at Otahuhu
Map Location: -36.945273 174.840503
Comments:

ImpactFlooding carried sewage was into garages and laundries of an apartment block in Gillies Road, Otahuhu.

LandslideLandslide at Ponsonby
Map Location: -36.852322 174.739343
Comments:

Affected LifelineTwo lanes of College Hill Road in Ponsonby were closed on the morning of the 10th due to subsidence. The hole was 3 m wide and about 2 m deep. The subsidence was caused by a stormwater pipe blowing out under pressure. Traffic had to be confined to one lane each way for the next seven days until the road was repaired.

HailHail at Takapuna
Map Location: -36.787162 174.755633
Comments:

CommentHail stones were reported on the North Shore.

Waikato

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

Physical CharacteristicHamilton recorded 33 mm (3.3 cm) of rain on the night of the 9th.

CommentHamilton received the most rain on in the night's downpour.

LandslideLandslide at Raglan
Map Location: -37.797036 174.865014
Comments:

Affected LifelineThere was a 30-metre-long slip on Wainui Road, Raglan's main coast road. Part of the road slipped 7 m into a gully at around 6am on the 10th. At least 100 residents in Whale Bay were isolated from the town. A temporary road would cost about $5000 ($6000 2008 dollars), and it could cost up to $100,000 ($120,000 2008 dollars) to stabilise and rebuild the road.

Affected LifelineThe slip also broke a power cable and temporarily cut power to Manu Bay and Whale Bay.

ImpactThe New Zealand Surfing Nationals in Manu Bay were delayed for two hours.

Bay of Plenty

LightningLightning at Tauranga
Map Location: -37.679532 176.173022
Comments:

CommentTauranga was hit by thunderstorms on the 10th.

ImpactThe roof of a house caught fire after it was hit by lightning.

Hawke's Bay

FloodingFlooding at Hawke's Bay
Comments:

CommentHeavy rain brought flooding to the Napier and Hastings area on the evening of the 10th.

CommentWidespread surface flooding occurred.

Affected LifelineStreets were turned into rivers and some were closed. Footpaths were damaged by flood waters.

Property DamageProperties were damaged by flood waters.

ImpactShops were flooded as stormwater systems were unable to cope.

Affected LifelineFlooding caused power cuts.

CommentIt was described as a 100 year event (the second in a month).

LightningLightning
Comments:

CommentIt was the region's worst electrical storm in years.

Multi HazardMulti Hazard
Duration:     - The storm lasted for 90 minutes.
Comments:
Heavy RainHeavy Rain at Bay View
Map Location: -39.419502 176.878839
Comments:

Physical CharacteristicBay View recorded 13.3 mm (1.3 cm) of rain in 90 minutes on the 10th.

Heavy RainHeavy Rain at Chesterhope station
Map Location: -39.58081 176.85412
Comments:

Physical CharacteristicChesterhope recorded 65 mm (6.5 cm) of rain in 45 minutes.

Heavy RainHeavy Rain at Clive
Map Location: -39.586947 176.912721
Comments:

Physical CharacteristicClive recorded 32.6 mm (3.3 cm) of rain in 90 minutes on the 10th.

Heavy RainHeavy Rain at Hastings
Map Location: -39.635771 176.828045
Comments:

Physical CharacteristicHastings recorded 77 mm (7.7 cm) of rain in 90 minutes on the 10th (Return Period well over 150 years).

FloodingFlooding
Comments:

ImpactMany shops in Hastings were flooded.

Physical CharacteristicWater was up to 100 mm (10 cm) deep in shops.

Physical CharacteristicThe Napier and Hastings city centres were flooded to a depth of 30 cm in some places.

Heavy RainHeavy Rain at Havelock North
Map Location: -39.673179 176.882039
Comments:

Physical CharacteristicHavelock North recorded 38.8 mm (3.9 cm) of rain in one hour on the 10th.

Physical CharacteristicHavelock North recorded 59.4 mm (5.9 cm) of rain in 90 minutes on the 10th.

CommentHavelock North was the hardest hit by Thursday night's torrential rain.

Heavy RainHeavy Rain at Napier
Map Location: -39.502426 176.892804
Comments:

CommentNapier was hit by a deluge at 9:30pm on the 10th.

Physical CharacteristicNapier recorded 70 mm (7.0 cm) of rain in 90 minutes on the 10th (Return Period over 150 years).

Physical CharacteristicNapier Airport recorded 29 mm (2.9 cm) of rain in one hour on the 10th.

FloodingFlooding
Comments:

ImpactMany shops in Napier were flooded. Some hosues were flooded

Affected LifelineNearly 1000 consumers were without power for several hours after a transformer was flooded in Churchill Drive, Taradale.

Affected LifelineSome streets were impassable due to surface floding.

ImpactFire services had to pump out a Cinema 4 theatre after water entered the building.

Physical CharacteristicWater was over 50 cm deep in an underground office complex.

ImpactA woman tried to drive round an upturned manhole cover and rushing water but hit a second cover, which pushed the car onto its side.

Physical CharacteristicThe Napier and Hastings city centres were flooded to a depth of 30 cm in some places.

Property DamageKingdom Music Napier was flooded and $90,000 ($110,000 2008 dollars) of electric guitars, amplifiers, and accessories were damaged.

Property DamageWater caused over $30,000 ($36,000 2008 dollars) of damage to electrical equipment and fittings when it flooded both floors of the Electrotech Controls Napier Building.

LightningLightning
Comments:

Property DamageLightning struck a house at Taradale.

Property DamageLightning struck one of the four light towers in McLean Park.

Multi HazardMulti Hazard
Comments:

DamageThe damage was expected to run into millions of dollars.

Heavy RainHeavy Rain at Pakowhai
Map Location: -39.584175 176.861298
Comments:

Physical CharacteristicPakowhai recorded 26.9 mm (2.7 cm) of rain in one hour on the 10th.

Physical CharacteristicPakowhai recorded 57.9 mm (5.8 cm) of rain in 90 minutes on the 10th.

Heavy RainHeavy Rain at Roys Hill
Map Location: -39.611775 176.735217
Comments:

Physical CharacteristicRoys Hill recorded 43.7 mm (4.4 cm) of rain in 90 minutes on the 10th.

Heavy RainHeavy Rain at Te Aute
Map Location: -39.792035 176.680172
Comments:

Physical CharacteristicTe Aute recorded 47.5 mm (4.8 cm) of rain in 90 minutes on the 10th.

Heavy RainHeavy Rain at Te Papa
Map Location: -39.880345 176.432792
Comments:

Physical CharacteristicTe Papa recorded 25.2 mm (2.5 cm) of rain in 90 minutes on the 10th.

Heavy RainHeavy Rain at Twyford
Map Location: -39.601017 176.802225
Comments:

Physical CharacteristicTwyford recorded 26.9 mm (2.7 cm) of rain in one hour on the 10th.

Physical CharacteristicTwyford recorded 55.4 mm (5.5 cm) of rain in 90 minutes on the 10th.

LightningLightning at Waipukurau
Map Location: -39.999445 176.562423
Comments:

CommentAn electrical storm formed near Waipukurau on the 10th and travelled north.

Manawatu-Wanganui

Multi HazardMulti Hazard at Manawatu-Wanganui
Comments:

CommentThunderstorms, some hail and surface flooding occurred over Wanganui and Manawatu.

FloodingFlooding at Mangaweka
Map Location: -39.815367 175.786149
Comments:

Affected LifelineA railway wash out occurred at Mangaweka.

Wellington

Multi HazardMulti Hazard at Wellington
Comments:

ImpactThe Wellington Fire Service was flat out with calls about flooding about fire alarms set off by lightning.

CommentThe weather system was very localised. Some eastern and northern suburbs had negligible amounts of rain.

CauseLikely sounding over Wellington showed the deep instability and high, ‘skinny’ CAPE characteristic of soundings within high rainfall storms. The low storm motion also contributed to high rainfall. The “straight-up-and-down” structure of storm points to low shears that prevailed over area, leading to intense rainfall over small area. The sea-breeze convergence zone was the trigger.

Insurance PaymentInsurance Industry Payouts for the Wellington / Wairarapa Flooding totalled $600,000 ($725,000 2008 dollars).

LightningLightning
Comments:

CommentA huge lightning and thunderstorm formed over Wellington city and suburbs just after 7pm on the 10th.

ImpactTelevision coverage to 2500 Wellington homes was out when lightning struck a translator.

CommentThere was also thunderstorm activity in Wairarapa.

Heavy RainHeavy Rain
Comments:

CommentExtremely localised torrential rainfall accompanied the storm.

FloodingFlooding
Comments:

CommentThe worst flooding in recent history occurred.

LandslideLandslide
Comments:

EvacueesThree Wellington homes were evacauted due to a slip, which deemed the properties unstable.

Heavy RainHeavy Rain at Kelburn
Map Location: -41.290129 174.76188
Comments:

Physical CharacteristicKelburn recorded over 50 mm (5.0 cm) of rain in less than one hour on the 10th (Return Period over 150 years).

Heavy RainHeavy Rain at Wellington City
Map Location: -41.28855 174.776764
Comments:

Physical CharacteristicWellington recorded about 40 mm (4.0 cm) of rain in 30 minutes from 7:05pm on the 10th.

Physical CharacteristicWellington recorded 52 mm (5.2 cm) of rain in one hour on the 10th. This was more than half the city's average January rainfall of 81 mm (8.1 cm). It was said to be a 100-year deluge.

FloodingFlooding
Comments:

CommentFlash floods occurred in the city centre around 7pm.

Physical CharacteristicWater was knee deep in Wakefield Street and other city streets.

ImpactShops and buildings were flooded, including the central fire station.

ImpactThere were 60 emergency calls related to the worst flooding in central city streets.

Affected LifelineScores of manhole covers were blown off roads.

Tasman-Nelson

LightningLightning at Tasman-Nelson
Comments:

CommentThunderstorms hit the Nelson region on the night of the 10th.

Multi HazardMulti Hazard
Comments:

Evacuees100 people were ferried from Abel Tasman tracks and coastline.

Heavy RainHeavy Rain at Totaranui
Map Location: -40.822208 173.004315
Comments:

Physical CharacteristicTotaranui recorded 150 mm (15.0 cm) of rain in 12 hours on the 10th.

FloodingFlooding
Comments:

Evacuees80 campers were evacuated from a Totarunui camping ground.

Affected LifelineThe road from Totaranui to Takaka was closed.

West Coast

LightningLightning at West Coast
Comments:

CommentThunderstorms hit much of the Buller region on the night of the 10th.

Otago

Multi HazardMulti Hazard at Otago
Comments:

Affected LifelineThere were power cuts to the Clutha Region on the 10th.

FloodingFlooding at Waikouaiti River South Branch
Map Location: -45.706945 170.511964
Comments:

ImpactFive trampers were rescued from the flooded Waikouiti River, near Dunedin.

References

Headline: 53mm of rain falls in 30 minutes.
The Evening Post, January 11 2002.
Headline: Floods drive residents out.
The Hawkes Bay Herald-Tribune, 10 January 2002.
Headline: Deluge takes city by surprise.
Hawkes Bay Today, 11 January 2002.
Headline: Lightning storm swamps HB.
Hawkes Bay Today, 11 January 2002.
Headline: Streets turn into rivers.
Hawkes Bay Today, 11 January 2002.
Headline: Cleaners send SOS in wake of storm.
Hawkes Bay Today, 12 January 2002.
Hawkes Bay Regional Council: www.hbrc.govt.nz.
Johnston, D.D.; Pearse, L.J. (2007). Hazards in Hawke's Bay. Hawke's Bay Regional Council, Napier, New Zealand.
Major weather events in New Zealand, Floods and High Rainfall, Floods to 31 May 2006.
www.metservice, notable weather events.govt.nz.
Meteorological Society of New Zealand (Inc.) Newsletter 88, March 2002.
Headline: Auckland road collapses following heavy rain.
www.nzherald.co.nz, Source: NZPA, 10 January 2002.
Headline: Residents forced out as downpour starts floods.
www.nzherald.co.nz, 10 January 2002.
Headline: Forecasters warn of deluge today.
www.nzherald.co.nz, 12 January 2002.
Headline: North could get storms as Wellington and Hawke's Bay mop up.
www.nzherald.co.nz, Source: NZPA, 11 January 2002.
Headline: Surf's up even if the main road is down.
www.nzherald.co.nz, Source: NZ Herald and NZPA, 11 January 2002.
Headline: Month of weather extremes, from sunny days to flash floods.
www.nzherald.co.nz, Source: NZPA, 2 February 2002.
New Zealand Meteorological Service. (2008). Meteorology of Extreme Rainfalls in New Zealand (Mark Pascoe, Ed.).

ExtremeJanuary 2002 North Island and Upper South Island Thunderstorms ( 2002-01-09 )

100 years

Thunderstorms brought lightning, heavy rain and flooding to many parts of the North Island and upper South Island. Wellington and Hawke's Bay were the worst affected regions, with extreme rainfalls causing flooding of properties and streets. A person in Auckland was treated for an eye injury caused by a sewage overflow.

New Zealand

Multi HazardMulti Hazard at New Zealand
Duration:   2  days - From the 9th to the 10th of January.
Comments:

CauseA shallow trough of low pressure containing humid, unstable air and light, and convergent low-level winds.

North Island

Multi HazardMulti Hazard at North Island
Comments:

CommentThunderstorms, some hail and surface flooding occurred over Wanganui, Manawatu, and the central and eastern North Island on the 9th/10th.

CommentUnstable weather conditions generated a devastating storm that hit the lower North Island on the night of the 10th. A lot of afternoon convective thunderstorms had developed.

Auckland

LightningLightning at Auckland
Comments:

CommentThunderstorms passed over Auckland overnight on the 9th/10th.

Heavy RainHeavy Rain
Comments:

CommentHeavy rain fell in Auckland overnight on the 9th/10th.

CommentHeavy rain fell for 30 minutes between 8pm and 8:30pm on the 9th.

Physical CharacteristicAuckland recieved 20 mm (2.0 cm) of rain on the night of the 9th.

Physical CharacteristicAuckland received about 100 mm (10.0 cm) of rain in 24 hours.

FloodingFlooding
Comments:

CommentFlash floods occurred in Auckland after torrential rain on the 9th.

CommentHalf Moon Bay and Howick were the most affected.

InjuriesA person was treated by ambulance officers for "severe eye irritation" caused by a sewage overflow.

Multi HazardMulti Hazard
Comments:

ImpactFirefighters received over 30 weather-related calls from St Heliers, Howick, Glen Innes and Half Moon Bay alone.

FloodingFlooding at Ellerslie
Map Location: -36.898442 174.811766
Comments:

Affected LifelineFlooding was reported on the Ellerslie-Panmure Highway.

FloodingFlooding at Glen Innes
Map Location: -36.875037 174.862762
Comments:

Affected LifelineThere were reports from 7:30pm of surface flooding in Merton Road, Glen Innes.

FloodingFlooding at Half Moon Bay
Map Location: -36.8834 174.900013
Comments:

ImpactTwelve homes in Half Moon Bay were flooded.

FloodingFlooding at Howick
Map Location: -36.896907 174.926193
Comments:

Affected LifelineA small creek overflowed and flooded Angelo Road in Howick.

Peak Water LevelAngelo Road was covered in up to 45 cm of water at the height of downpour.

FloodingFlooding at Otahuhu
Map Location: -36.945273 174.840503
Comments:

ImpactFlooding carried sewage was into garages and laundries of an apartment block in Gillies Road, Otahuhu.

LandslideLandslide at Ponsonby
Map Location: -36.852322 174.739343
Comments:

Affected LifelineTwo lanes of College Hill Road in Ponsonby were closed on the morning of the 10th due to subsidence. The hole was 3 m wide and about 2 m deep. The subsidence was caused by a stormwater pipe blowing out under pressure. Traffic had to be confined to one lane each way for the next seven days until the road was repaired.

HailHail at Takapuna
Map Location: -36.787162 174.755633
Comments:

CommentHail stones were reported on the North Shore.

Waikato

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

Physical CharacteristicHamilton recorded 33 mm (3.3 cm) of rain on the night of the 9th.

CommentHamilton received the most rain on in the night's downpour.

LandslideLandslide at Raglan
Map Location: -37.797036 174.865014
Comments:

Affected LifelineThere was a 30-metre-long slip on Wainui Road, Raglan's main coast road. Part of the road slipped 7 m into a gully at around 6am on the 10th. At least 100 residents in Whale Bay were isolated from the town. A temporary road would cost about $5000 ($6000 2008 dollars), and it could cost up to $100,000 ($120,000 2008 dollars) to stabilise and rebuild the road.

Affected LifelineThe slip also broke a power cable and temporarily cut power to Manu Bay and Whale Bay.

ImpactThe New Zealand Surfing Nationals in Manu Bay were delayed for two hours.

Bay of Plenty

LightningLightning at Tauranga
Map Location: -37.679532 176.173022
Comments:

CommentTauranga was hit by thunderstorms on the 10th.

ImpactThe roof of a house caught fire after it was hit by lightning.

Hawke's Bay

FloodingFlooding at Hawke's Bay
Comments:

CommentHeavy rain brought flooding to the Napier and Hastings area on the evening of the 10th.

CommentWidespread surface flooding occurred.

Affected LifelineStreets were turned into rivers and some were closed. Footpaths were damaged by flood waters.

Property DamageProperties were damaged by flood waters.

ImpactShops were flooded as stormwater systems were unable to cope.

Affected LifelineFlooding caused power cuts.

CommentIt was described as a 100 year event (the second in a month).

LightningLightning
Comments:

CommentIt was the region's worst electrical storm in years.

Multi HazardMulti Hazard
Duration:     - The storm lasted for 90 minutes.
Comments:
Heavy RainHeavy Rain at Bay View
Map Location: -39.419502 176.878839
Comments:

Physical CharacteristicBay View recorded 13.3 mm (1.3 cm) of rain in 90 minutes on the 10th.

Heavy RainHeavy Rain at Chesterhope station
Map Location: -39.58081 176.85412
Comments:

Physical CharacteristicChesterhope recorded 65 mm (6.5 cm) of rain in 45 minutes.

Heavy RainHeavy Rain at Clive
Map Location: -39.586947 176.912721
Comments:

Physical CharacteristicClive recorded 32.6 mm (3.3 cm) of rain in 90 minutes on the 10th.

Heavy RainHeavy Rain at Hastings
Map Location: -39.635771 176.828045
Comments:

Physical CharacteristicHastings recorded 77 mm (7.7 cm) of rain in 90 minutes on the 10th (Return Period well over 150 years).

FloodingFlooding
Comments:

ImpactMany shops in Hastings were flooded.

Physical CharacteristicWater was up to 100 mm (10 cm) deep in shops.

Physical CharacteristicThe Napier and Hastings city centres were flooded to a depth of 30 cm in some places.

Heavy RainHeavy Rain at Havelock North
Map Location: -39.673179 176.882039
Comments:

Physical CharacteristicHavelock North recorded 38.8 mm (3.9 cm) of rain in one hour on the 10th.

Physical CharacteristicHavelock North recorded 59.4 mm (5.9 cm) of rain in 90 minutes on the 10th.

CommentHavelock North was the hardest hit by Thursday night's torrential rain.

Heavy RainHeavy Rain at Napier
Map Location: -39.502426 176.892804
Comments:

CommentNapier was hit by a deluge at 9:30pm on the 10th.

Physical CharacteristicNapier recorded 70 mm (7.0 cm) of rain in 90 minutes on the 10th (Return Period over 150 years).

Physical CharacteristicNapier Airport recorded 29 mm (2.9 cm) of rain in one hour on the 10th.

FloodingFlooding
Comments:

ImpactMany shops in Napier were flooded. Some hosues were flooded

Affected LifelineNearly 1000 consumers were without power for several hours after a transformer was flooded in Churchill Drive, Taradale.

Affected LifelineSome streets were impassable due to surface floding.

ImpactFire services had to pump out a Cinema 4 theatre after water entered the building.

Physical CharacteristicWater was over 50 cm deep in an underground office complex.

ImpactA woman tried to drive round an upturned manhole cover and rushing water but hit a second cover, which pushed the car onto its side.

Physical CharacteristicThe Napier and Hastings city centres were flooded to a depth of 30 cm in some places.

Property DamageKingdom Music Napier was flooded and $90,000 ($110,000 2008 dollars) of electric guitars, amplifiers, and accessories were damaged.

Property DamageWater caused over $30,000 ($36,000 2008 dollars) of damage to electrical equipment and fittings when it flooded both floors of the Electrotech Controls Napier Building.

LightningLightning
Comments:

Property DamageLightning struck a house at Taradale.

Property DamageLightning struck one of the four light towers in McLean Park.

Multi HazardMulti Hazard
Comments:

DamageThe damage was expected to run into millions of dollars.

Heavy RainHeavy Rain at Pakowhai
Map Location: -39.584175 176.861298
Comments:

Physical CharacteristicPakowhai recorded 26.9 mm (2.7 cm) of rain in one hour on the 10th.

Physical CharacteristicPakowhai recorded 57.9 mm (5.8 cm) of rain in 90 minutes on the 10th.

Heavy RainHeavy Rain at Roys Hill
Map Location: -39.611775 176.735217
Comments:

Physical CharacteristicRoys Hill recorded 43.7 mm (4.4 cm) of rain in 90 minutes on the 10th.

Heavy RainHeavy Rain at Te Aute
Map Location: -39.792035 176.680172
Comments:

Physical CharacteristicTe Aute recorded 47.5 mm (4.8 cm) of rain in 90 minutes on the 10th.

Heavy RainHeavy Rain at Te Papa
Map Location: -39.880345 176.432792
Comments:

Physical CharacteristicTe Papa recorded 25.2 mm (2.5 cm) of rain in 90 minutes on the 10th.

Heavy RainHeavy Rain at Twyford
Map Location: -39.601017 176.802225
Comments:

Physical CharacteristicTwyford recorded 26.9 mm (2.7 cm) of rain in one hour on the 10th.

Physical CharacteristicTwyford recorded 55.4 mm (5.5 cm) of rain in 90 minutes on the 10th.

LightningLightning at Waipukurau
Map Location: -39.999445 176.562423
Comments:

CommentAn electrical storm formed near Waipukurau on the 10th and travelled north.

Manawatu-Wanganui

Multi HazardMulti Hazard at Manawatu-Wanganui
Comments:

CommentThunderstorms, some hail and surface flooding occurred over Wanganui and Manawatu.

FloodingFlooding at Mangaweka
Map Location: -39.815367 175.786149
Comments:

Affected LifelineA railway wash out occurred at Mangaweka.

Wellington

Multi HazardMulti Hazard at Wellington
Comments:

ImpactThe Wellington Fire Service was flat out with calls about flooding about fire alarms set off by lightning.

CommentThe weather system was very localised. Some eastern and northern suburbs had negligible amounts of rain.

CauseLikely sounding over Wellington showed the deep instability and high, ‘skinny’ CAPE characteristic of soundings within high rainfall storms. The low storm motion also contributed to high rainfall. The “straight-up-and-down” structure of storm points to low shears that prevailed over area, leading to intense rainfall over small area. The sea-breeze convergence zone was the trigger.

Insurance PaymentInsurance Industry Payouts for the Wellington / Wairarapa Flooding totalled $600,000 ($725,000 2008 dollars).

LightningLightning
Comments:

CommentA huge lightning and thunderstorm formed over Wellington city and suburbs just after 7pm on the 10th.

ImpactTelevision coverage to 2500 Wellington homes was out when lightning struck a translator.

CommentThere was also thunderstorm activity in Wairarapa.

Heavy RainHeavy Rain
Comments:

CommentExtremely localised torrential rainfall accompanied the storm.

FloodingFlooding
Comments:

CommentThe worst flooding in recent history occurred.

LandslideLandslide
Comments:

EvacueesThree Wellington homes were evacauted due to a slip, which deemed the properties unstable.

Heavy RainHeavy Rain at Kelburn
Map Location: -41.290129 174.76188
Comments:

Physical CharacteristicKelburn recorded over 50 mm (5.0 cm) of rain in less than one hour on the 10th (Return Period over 150 years).

Heavy RainHeavy Rain at Wellington City
Map Location: -41.28855 174.776764
Comments:

Physical CharacteristicWellington recorded about 40 mm (4.0 cm) of rain in 30 minutes from 7:05pm on the 10th.

Physical CharacteristicWellington recorded 52 mm (5.2 cm) of rain in one hour on the 10th. This was more than half the city's average January rainfall of 81 mm (8.1 cm). It was said to be a 100-year deluge.

FloodingFlooding
Comments:

CommentFlash floods occurred in the city centre around 7pm.

Physical CharacteristicWater was knee deep in Wakefield Street and other city streets.

ImpactShops and buildings were flooded, including the central fire station.

ImpactThere were 60 emergency calls related to the worst flooding in central city streets.

Affected LifelineScores of manhole covers were blown off roads.

Tasman-Nelson

LightningLightning at Tasman-Nelson
Comments:

CommentThunderstorms hit the Nelson region on the night of the 10th.

Multi HazardMulti Hazard
Comments:

Evacuees100 people were ferried from Abel Tasman tracks and coastline.

Heavy RainHeavy Rain at Totaranui
Map Location: -40.822208 173.004315
Comments:

Physical CharacteristicTotaranui recorded 150 mm (15.0 cm) of rain in 12 hours on the 10th.

FloodingFlooding
Comments:

Evacuees80 campers were evacuated from a Totarunui camping ground.

Affected LifelineThe road from Totaranui to Takaka was closed.

West Coast

LightningLightning at West Coast
Comments:

CommentThunderstorms hit much of the Buller region on the night of the 10th.

Otago

Multi HazardMulti Hazard at Otago
Comments:

Affected LifelineThere were power cuts to the Clutha Region on the 10th.

FloodingFlooding at Waikouaiti River South Branch
Map Location: -45.706945 170.511964
Comments:

ImpactFive trampers were rescued from the flooded Waikouiti River, near Dunedin.

References

Headline: 53mm of rain falls in 30 minutes.
The Evening Post, January 11 2002.
Headline: Floods drive residents out.
The Hawkes Bay Herald-Tribune, 10 January 2002.
Headline: Deluge takes city by surprise.
Hawkes Bay Today, 11 January 2002.
Headline: Lightning storm swamps HB.
Hawkes Bay Today, 11 January 2002.
Headline: Streets turn into rivers.
Hawkes Bay Today, 11 January 2002.
Headline: Cleaners send SOS in wake of storm.
Hawkes Bay Today, 12 January 2002.
Hawkes Bay Regional Council: www.hbrc.govt.nz.
Johnston, D.D.; Pearse, L.J. (2007). Hazards in Hawke's Bay. Hawke's Bay Regional Council, Napier, New Zealand.
Major weather events in New Zealand, Floods and High Rainfall, Floods to 31 May 2006.
www.metservice, notable weather events.govt.nz.
Meteorological Society of New Zealand (Inc.) Newsletter 88, March 2002.
Headline: Auckland road collapses following heavy rain.
www.nzherald.co.nz, Source: NZPA, 10 January 2002.
Headline: Residents forced out as downpour starts floods.
www.nzherald.co.nz, 10 January 2002.
Headline: Forecasters warn of deluge today.
www.nzherald.co.nz, 12 January 2002.
Headline: North could get storms as Wellington and Hawke's Bay mop up.
www.nzherald.co.nz, Source: NZPA, 11 January 2002.
Headline: Surf's up even if the main road is down.
www.nzherald.co.nz, Source: NZ Herald and NZPA, 11 January 2002.
Headline: Month of weather extremes, from sunny days to flash floods.
www.nzherald.co.nz, Source: NZPA, 2 February 2002.
New Zealand Meteorological Service. (2008). Meteorology of Extreme Rainfalls in New Zealand (Mark Pascoe, Ed.).