NZ Historic Weather Events Catalogue

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SevereJanuary 2002 South Island and Waikato Flooding ( 2002-01-11 )

100 years

A cloudburst over Tararu Stream caused flash floods and severe damage in the Tararu township. Canterbury and Otago also experienced heavy rain and flooding resulting in road closures.

New Zealand

Multi HazardMulti Hazard at New Zealand
Comments:

CauseA large, slow-moving depression was moving slowly eastwards towards the North Island, with an east to northeast flow covering central and southern New Zealand. A frontal rain band moved southwards onto South Island.

South Island

Heavy RainHeavy Rain at South Island
Duration:   3  days - Heavy rain wreaked havoc along the east coast of the South Island from the 11th to the 13th.
Comments:
FloodingFlooding
Comments:

Affected LifelineSlips and flooding cut roads in many places and made travel difficult on several main highways and throughout the back country from Marlborough to Otago.

Affected LifelineFlooded rivers washed out and undermined bridges right through the regions.

ImpactWidespread surface flooding was reported around towns and cities.

Affected LifelineState Highway 1 between Kaikoura and Dunedin was "treacherous". There were slips and flooding across the road.

Affected LifelineOn the 15th roads were still slippery and there was still some residual surface flooding.

Waikato

Multi HazardMulti Hazard at Waikato
Comments:

CommentThere were two severe rainfall events of the night of the 11th and the afternoon of the 12th resulting from very intense electrical storms.

FloodingFlooding
Comments:

DamageThe storms were localised but caused considerable flooding and damage.

Heavy RainHeavy Rain at Kauaeranga
Map Location: -37.147063 175.601459
Comments:

Peak RainfallLower Kauaeranga River recorded 142 mm (14.2 cm) of rain in three hours.

FloodingFlooding
Comments:

Affected Lifeline30 campers were stranded overnight after Maungakirikiri Bridge was damaged.

DamageThe Maungakirikiri Bridge south of Thames was shunted downstream. The floodwaters washed away a vehicle with a boat and trailer attached.

Heavy RainHeavy Rain at Mangaiti Stream
Map Location: -37.49425 175.70899
Comments:

DamageThe first rainfall on the 11th caused substantial damage in the Mangaiti catchment as well as the Te Aroha and Paeroa catchments.

FloodingFlooding at Tararu
Map Location: -37.111701 175.512923
Comments:

ImpactTararu Stream swept through the small settlement of Tararu.

EvacueesBetween 15 and 25 homes (approximately 100 people) were evacuated from Tararu.

Insurance PaymentInsurance industry payouts for the event was $250,000.

ImpactSilt and mud covered properties.

Affected LifelineSeveral roads were closed.

CommentIt was the worst flood in town since 1985

Physical CharacteristicA house was flooded with one metre of water.

Property DamageAbout 100 properties were affected in total.

Property DamageOne couple had records for their commercial fishing business destroyed and fishing gear and tools were swept away when their house was flooded.

Heavy RainHeavy Rain at Tararu Stream
Map Location: -37.0982 175.54027
Comments:

Peak RainfallThe mid Tararu catchment recorded 170 mm (17.0 cm) of rain in three hours on the afternoon of the 12th.

Physical CharacteristicNearby regions received 30-40 mm (3.0-4.0 cm) of rain in 30 minutes on the afternoon of the 12th. No figures recorded for the exact area affected.

FloodingFlooding
Comments:

DamageThere was damage to scheme works. The cost of repairing the works, fabric and rock-lined flood channels that had been torn apart was estimated to be $200,000 - $250,000 in 2002. The works saved a lot of property damage.

Peak DischargeTararu Stream had an estimated flow of 250 cumecs.

CommentThere was no declaration of emergency but the return period was estimated as a 100 year event.

Affected LifelineTararu Stream overflowed its banks sending large amounts water and debris over State Highway 25.

ImpactHuge rocks and 3-6 m logs came tumbling down the flooded creek.

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

Peak RainfallTe Aroha recorded over 150 mm (15.0 cm) of rain.

Heavy RainHeavy Rain at Waihou River
Map Location: -37.329797 175.617724
Comments:

DamageThe rainfall on the 12th caused extensive damage to both Waihou Valley scheme works and private property. Te Puru to Kauaeranga catchments were also affected.

FloodingFlooding at Waitoa River
Map Location: -37.823746 175.744186
Comments:

CommentWaitoa River broke its banks in several places.

Canterbury

Heavy RainHeavy Rain at Canterbury
Comments:

CommentMetService issued a Severe Weather Warning for the Kaikoura coast and North Canterbury ranges on the 11th.

Physical CharacteristicNorth Canterbury foothills received 250 mm (25.0 cm) of rain.

CommentHeavy rain wreaked havoc along the east coast of Canterbury from the 11th to the 13th .More heavy rain fell on the morning of the 13th.

FloodingFlooding
Comments:

CommentThere was slips and surface flooding throughout Canterbury and the Kaikoura Coast.

Evacuees30 families (approximately 120 people) were evacuated from a camping ground in Central Canterbury on the afternoon of the 12th. It was one of three camping grounds in the province reported to have been evacuated.

Affected LifelineThere were problems on State Highway 73 to the West Coast over Arthur's Pass. There was flooding on the road beween Springfield and Porters Pass and the road was down to one lane in places.

Affected LifelineState Highway 1 was closed at Ashburton and at Maheno on the 12th. Slips and flooding also caused problems on State Highway 1 north and south of Kaikoura.

ImpactEmergency services received hundreds of flood-related calls over the 12th to the 13th.

Affected LifelineAll major roads were open again by the afternoon of the 13th.

Insurance PaymentInsurance industry payouts for the event was $250,000 in 2002.

Affected LifelineCell phone and toll services to Otago and Southland were cut at Timaru.

Heavy RainHeavy Rain at Akaroa
Map Location: -43.806637 172.973757
Comments:

CommentOne of the hardest hit areas was Banks Peninsula, particularly Akaroa.

Physical CharacteristicAkaroa recorded 120 mm (12.0 cm) of rain in 24 hours.

FloodingFlooding
Comments:

Affected LifelineFloodwaters overwhelmed many bridges and streets in Akaroa.

Affected LifelineThe main street was underwater on the morning of the 13th and was closed to traffic.

ImpactThe township of Akaroa was severly flooded.

EvacueesSome people had to be evacuated from the main street area.

CommentBy the 14th most of the flooding had receded.

Affected LifelineThe water supply was cut at the on the 12th and 13th.

ImpactHouses were flooded.

FloodingFlooding at Coopers Creek
Map Location: -43.29034 172.10216
Comments:

Affected LifelineA bridge at Coopers Creek at the back of Oxford was washed out.

FloodingFlooding at Glentunnel
Map Location: -43.48131 171.93276
Comments:

EvacueesCampers at the Glentunnel camping ground evacuated on the afternoon of the 12th as floodwaters threatened the area.

Heavy RainHeavy Rain at Hanmer Forest Park
Map Location: -42.48502 172.76611
Comments:

Physical CharacteristicHanmer Forest recorded 109 mm (10.9 cm) of rain in 24 hours.

Heavy RainHeavy Rain at Kaikoura
Map Location: -42.402255 173.685685
Comments:

Physical CharacteristicKaikoura recorded 100 mm (10.0 cm) of rain in 24 hours to the morning of the 13th.

FloodingFlooding
Comments:

EvacueesHomes under threat of flooding on the Kaikoura Coast were evacuated.

Affected LifelineKowhai Bridge was washed out.

FloodingFlooding at Methven
Map Location: -43.637403 171.629133
Comments:

Affected LifelineTwo bridges were washed out at the back of Methven.

Heavy RainHeavy Rain at Snowden
Map Location: -44.44866 170.67534
Comments:

Physical CharacteristicSnowden recorded 100 mm (10.0 cm) of rain in 24 hours.

FloodingFlooding at Waimakariri River
Map Location: -43.459744 172.289962
Comments:

ImpactFour kayakers were rescued from floodwaters in the Waimakariri Gorge area on the afternoon of the 12th.

Otago

Heavy RainHeavy Rain at Otago
Comments:

CommentExtreme rainfall affected only a very small area of the province.

FloodingFlooding
Comments:

CommentThere was widespread flooding from Kaikoura to North Otago on the 12th.

Affected LifelineState Highway 1 between Waikouaiti and Dunedin was closed early on the afternoon of the 12th. Waikouiti River kept State Highway 1 closed for 24 hours.

Heavy RainHeavy Rain at Kakanui
Map Location: -45.178839 170.909984
Comments:

Physical CharacteristicKakanui mountains received between 100 mm (10.0 cm) to nearly 500 mm (50.0 cm) over four days.

Heavy RainHeavy Rain at The Dasher
Map Location: -45.176089 170.678146
Comments:

Physical CharacteristicThe Dasher recorded 251.5 mm (25.15 cm) of rain in 36 hours (which has a return period of over 150 years).

Physical CharacteristicThe Dasher recorded 217 mm (21.7 cm) of rain in 24 hours to 6:30pm on the 12th (which has a return period of over 150 years).

References

Environment Waikato Flood Document (CD)
History of Flood Events on the Thames Coast, Environment Waikato
Insurance Councils, The Cost of Weather Loses, Claims History (Updated 2004)
Major weather events in New Zealand, FLOODS AND HIGH RAINFALL, Floods to 31st July 2006
Meteorological Society of New Zealand (Inc.) Newsletter 88, March 2002.
NZ Met Service. (2008). Meteorology of Extreme Rainfalls in New Zealand (Mark Pascoe, Ed.).
State of Emergency Declarations in the district since 1976, Environment Waikato
Headline: Works lessen flood damage.
The Waikato Times, 14 January 2002.
Headline: Bridge damage spells long delays.
The Waikato Times, 15 January 2002.
Headline: Forecasters warn of deluge today.
www.nzherald.co.nz, 12 January 2002.
Headline: Creek's torrent floods homes in day of misery.
www.nzherald.co.nz, 14 January 2002.
Headline: Rain wreaks havoc in South Island.
www.nzherald.co.nz, Source: Christchurch Star, 13 January 2002.
Headline: Canterbury cleaning up after wet weekend chaos.
www.nzherald.co.nz, Source: Christchurch Star, 15 January 2002.

SevereJanuary 2002 South Island and Waikato Flooding ( 2002-01-11 )

100 years

A cloudburst over Tararu Stream caused flash floods and severe damage in the Tararu township. Canterbury and Otago also experienced heavy rain and flooding resulting in road closures.

New Zealand

Multi HazardMulti Hazard at New Zealand
Comments:

CauseA large, slow-moving depression was moving slowly eastwards towards the North Island, with an east to northeast flow covering central and southern New Zealand. A frontal rain band moved southwards onto South Island.

South Island

Heavy RainHeavy Rain at South Island
Duration:   3  days - Heavy rain wreaked havoc along the east coast of the South Island from the 11th to the 13th.
Comments:
FloodingFlooding
Comments:

Affected LifelineSlips and flooding cut roads in many places and made travel difficult on several main highways and throughout the back country from Marlborough to Otago.

Affected LifelineFlooded rivers washed out and undermined bridges right through the regions.

ImpactWidespread surface flooding was reported around towns and cities.

Affected LifelineState Highway 1 between Kaikoura and Dunedin was "treacherous". There were slips and flooding across the road.

Affected LifelineOn the 15th roads were still slippery and there was still some residual surface flooding.

Waikato

Multi HazardMulti Hazard at Waikato
Comments:

CommentThere were two severe rainfall events of the night of the 11th and the afternoon of the 12th resulting from very intense electrical storms.

FloodingFlooding
Comments:

DamageThe storms were localised but caused considerable flooding and damage.

Heavy RainHeavy Rain at Kauaeranga
Map Location: -37.147063 175.601459
Comments:

Peak RainfallLower Kauaeranga River recorded 142 mm (14.2 cm) of rain in three hours.

FloodingFlooding
Comments:

Affected Lifeline30 campers were stranded overnight after Maungakirikiri Bridge was damaged.

DamageThe Maungakirikiri Bridge south of Thames was shunted downstream. The floodwaters washed away a vehicle with a boat and trailer attached.

Heavy RainHeavy Rain at Mangaiti Stream
Map Location: -37.49425 175.70899
Comments:

DamageThe first rainfall on the 11th caused substantial damage in the Mangaiti catchment as well as the Te Aroha and Paeroa catchments.

FloodingFlooding at Tararu
Map Location: -37.111701 175.512923
Comments:

ImpactTararu Stream swept through the small settlement of Tararu.

EvacueesBetween 15 and 25 homes (approximately 100 people) were evacuated from Tararu.

Insurance PaymentInsurance industry payouts for the event was $250,000.

ImpactSilt and mud covered properties.

Affected LifelineSeveral roads were closed.

CommentIt was the worst flood in town since 1985

Physical CharacteristicA house was flooded with one metre of water.

Property DamageAbout 100 properties were affected in total.

Property DamageOne couple had records for their commercial fishing business destroyed and fishing gear and tools were swept away when their house was flooded.

Heavy RainHeavy Rain at Tararu Stream
Map Location: -37.0982 175.54027
Comments:

Peak RainfallThe mid Tararu catchment recorded 170 mm (17.0 cm) of rain in three hours on the afternoon of the 12th.

Physical CharacteristicNearby regions received 30-40 mm (3.0-4.0 cm) of rain in 30 minutes on the afternoon of the 12th. No figures recorded for the exact area affected.

FloodingFlooding
Comments:

DamageThere was damage to scheme works. The cost of repairing the works, fabric and rock-lined flood channels that had been torn apart was estimated to be $200,000 - $250,000 in 2002. The works saved a lot of property damage.

Peak DischargeTararu Stream had an estimated flow of 250 cumecs.

CommentThere was no declaration of emergency but the return period was estimated as a 100 year event.

Affected LifelineTararu Stream overflowed its banks sending large amounts water and debris over State Highway 25.

ImpactHuge rocks and 3-6 m logs came tumbling down the flooded creek.

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

Peak RainfallTe Aroha recorded over 150 mm (15.0 cm) of rain.

Heavy RainHeavy Rain at Waihou River
Map Location: -37.329797 175.617724
Comments:

DamageThe rainfall on the 12th caused extensive damage to both Waihou Valley scheme works and private property. Te Puru to Kauaeranga catchments were also affected.

FloodingFlooding at Waitoa River
Map Location: -37.823746 175.744186
Comments:

CommentWaitoa River broke its banks in several places.

Canterbury

Heavy RainHeavy Rain at Canterbury
Comments:

CommentMetService issued a Severe Weather Warning for the Kaikoura coast and North Canterbury ranges on the 11th.

Physical CharacteristicNorth Canterbury foothills received 250 mm (25.0 cm) of rain.

CommentHeavy rain wreaked havoc along the east coast of Canterbury from the 11th to the 13th .More heavy rain fell on the morning of the 13th.

FloodingFlooding
Comments:

CommentThere was slips and surface flooding throughout Canterbury and the Kaikoura Coast.

Evacuees30 families (approximately 120 people) were evacuated from a camping ground in Central Canterbury on the afternoon of the 12th. It was one of three camping grounds in the province reported to have been evacuated.

Affected LifelineThere were problems on State Highway 73 to the West Coast over Arthur's Pass. There was flooding on the road beween Springfield and Porters Pass and the road was down to one lane in places.

Affected LifelineState Highway 1 was closed at Ashburton and at Maheno on the 12th. Slips and flooding also caused problems on State Highway 1 north and south of Kaikoura.

ImpactEmergency services received hundreds of flood-related calls over the 12th to the 13th.

Affected LifelineAll major roads were open again by the afternoon of the 13th.

Insurance PaymentInsurance industry payouts for the event was $250,000 in 2002.

Affected LifelineCell phone and toll services to Otago and Southland were cut at Timaru.

Heavy RainHeavy Rain at Akaroa
Map Location: -43.806637 172.973757
Comments:

CommentOne of the hardest hit areas was Banks Peninsula, particularly Akaroa.

Physical CharacteristicAkaroa recorded 120 mm (12.0 cm) of rain in 24 hours.

FloodingFlooding
Comments:

Affected LifelineFloodwaters overwhelmed many bridges and streets in Akaroa.

Affected LifelineThe main street was underwater on the morning of the 13th and was closed to traffic.

ImpactThe township of Akaroa was severly flooded.

EvacueesSome people had to be evacuated from the main street area.

CommentBy the 14th most of the flooding had receded.

Affected LifelineThe water supply was cut at the on the 12th and 13th.

ImpactHouses were flooded.

FloodingFlooding at Coopers Creek
Map Location: -43.29034 172.10216
Comments:

Affected LifelineA bridge at Coopers Creek at the back of Oxford was washed out.

FloodingFlooding at Glentunnel
Map Location: -43.48131 171.93276
Comments:

EvacueesCampers at the Glentunnel camping ground evacuated on the afternoon of the 12th as floodwaters threatened the area.

Heavy RainHeavy Rain at Hanmer Forest Park
Map Location: -42.48502 172.76611
Comments:

Physical CharacteristicHanmer Forest recorded 109 mm (10.9 cm) of rain in 24 hours.

Heavy RainHeavy Rain at Kaikoura
Map Location: -42.402255 173.685685
Comments:

Physical CharacteristicKaikoura recorded 100 mm (10.0 cm) of rain in 24 hours to the morning of the 13th.

FloodingFlooding
Comments:

EvacueesHomes under threat of flooding on the Kaikoura Coast were evacuated.

Affected LifelineKowhai Bridge was washed out.

FloodingFlooding at Methven
Map Location: -43.637403 171.629133
Comments:

Affected LifelineTwo bridges were washed out at the back of Methven.

Heavy RainHeavy Rain at Snowden
Map Location: -44.44866 170.67534
Comments:

Physical CharacteristicSnowden recorded 100 mm (10.0 cm) of rain in 24 hours.

FloodingFlooding at Waimakariri River
Map Location: -43.459744 172.289962
Comments:

ImpactFour kayakers were rescued from floodwaters in the Waimakariri Gorge area on the afternoon of the 12th.

Otago

Heavy RainHeavy Rain at Otago
Comments:

CommentExtreme rainfall affected only a very small area of the province.

FloodingFlooding
Comments:

CommentThere was widespread flooding from Kaikoura to North Otago on the 12th.

Affected LifelineState Highway 1 between Waikouaiti and Dunedin was closed early on the afternoon of the 12th. Waikouiti River kept State Highway 1 closed for 24 hours.

Heavy RainHeavy Rain at Kakanui
Map Location: -45.178839 170.909984
Comments:

Physical CharacteristicKakanui mountains received between 100 mm (10.0 cm) to nearly 500 mm (50.0 cm) over four days.

Heavy RainHeavy Rain at The Dasher
Map Location: -45.176089 170.678146
Comments:

Physical CharacteristicThe Dasher recorded 251.5 mm (25.15 cm) of rain in 36 hours (which has a return period of over 150 years).

Physical CharacteristicThe Dasher recorded 217 mm (21.7 cm) of rain in 24 hours to 6:30pm on the 12th (which has a return period of over 150 years).

References

Environment Waikato Flood Document (CD)
History of Flood Events on the Thames Coast, Environment Waikato
Insurance Councils, The Cost of Weather Loses, Claims History (Updated 2004)
Major weather events in New Zealand, FLOODS AND HIGH RAINFALL, Floods to 31st July 2006
Meteorological Society of New Zealand (Inc.) Newsletter 88, March 2002.
NZ Met Service. (2008). Meteorology of Extreme Rainfalls in New Zealand (Mark Pascoe, Ed.).
State of Emergency Declarations in the district since 1976, Environment Waikato
Headline: Works lessen flood damage.
The Waikato Times, 14 January 2002.
Headline: Bridge damage spells long delays.
The Waikato Times, 15 January 2002.
Headline: Forecasters warn of deluge today.
www.nzherald.co.nz, 12 January 2002.
Headline: Creek's torrent floods homes in day of misery.
www.nzherald.co.nz, 14 January 2002.
Headline: Rain wreaks havoc in South Island.
www.nzherald.co.nz, Source: Christchurch Star, 13 January 2002.
Headline: Canterbury cleaning up after wet weekend chaos.
www.nzherald.co.nz, Source: Christchurch Star, 15 January 2002.