NZ Historic Weather Events Catalog

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October 1998 North Island and Upper South Island Flooding ( 1998-10-08 )

Heavy rain brought flooding and slips to parts of the North Island and upper South Island. Rainfall in Taranaki was extreme, and extensive damage was done to roads.

New Zealand

Multi HazardMulti Hazard at New Zealand
Duration:   3  days - From the 8th to the 10th of October.
Comments:
Heavy RainHeavy Rain
Comments:

CommentOn the 8th, high rainfall first occurred in Nelson and Marlborough Sounds, then spread north to Taranaki and the Bay of Islands.

Northland

Heavy RainHeavy Rain at Bay of Islands
Map Location: -35.181318 174.199165
Comments:

CommentHeavy rain fell in the Bay of Islands.

Taranaki

Heavy RainHeavy Rain at Taranaki
Comments:

CommentHeavy rain fell in Taranaki.

CommentThe rainfall ARI was over a 100 year event.

FloodingFlooding
Comments:

Affected LifelineRivers overflowed and severe surface flooding occurred on north and central Taranaki roads, causing road closures. State Highway 3 at Egmont Village and Tariki was closed for a time on the 9th.

CommentThe floods were described as the "worst in more that 40 years".

CommentAll rivers around the main ring plain were in a state of moderate to high flooding.

LandslideLandslide
Comments:

Affected LifelineMinor slips occurred around the region, and some huge slips came down on roads.

Multi HazardMulti Hazard
Comments:

Affected LifelineExtensive damage was done to roads.

Heavy RainHeavy Rain at Dawson Falls
Map Location: -39.321582 174.105391
Comments:

Physical CharacteristicDawson Falls recorded 514 mm (51.4 cm) of rain from 3pm on the 8th to late night on the 9th.

Heavy RainHeavy Rain at Egmont Village
Map Location: -39.144561 174.148737
Comments:

Physical CharacteristicEgmont Village recorded 202 mm (20.2 cm) of rain from 3pm on the 8th to late night on the 9th.

Heavy RainHeavy Rain at Mount Taranaki
Map Location: -39.295865 174.063806
Comments:

Physical CharacteristicMt Taranaki recorded 905 mm (90.5 cm) of rain in 48 hours to the 10th.

Physical CharacteristicMt Taranaki recorded 1100 mm (110.0 cm) of rain in 58 hours.

Heavy RainHeavy Rain at New Plymouth
Map Location: -39.051214 174.06972
Comments:

Physical CharacteristicNew Plymouth Airport recorded 232 mm (23.2 cm) of rain in 24 hours.

FloodingFlooding
Comments:

ImpactThe Waiwhakaiho River at the meeting of the Waters overflowed into Burgess park.

Heavy RainHeavy Rain at North Egmont
Map Location: -39.269979 174.085413
Comments:

Physical CharacteristicNorth Egmont Station recorded 1114 mm (111.4 cm) of rain in three days.

Physical CharacteristicNorth Egmont recorded 670 mm (67.0 cm) of rain from 3pm on the 8th to late night on the 9th.

CommentThe deluge at North Egmont was so heavy it equalled the worst downpour since records began in 1990.

FloodingFlooding at Opunake
Map Location: -39.456198 173.859526
Comments:

ImpactOpunake was the worst-hit area, with a number of homes flooded.

EvacueesPeople were evacuated at Opunake.

Heavy RainHeavy Rain at Pukeiti Hill
Map Location: -39.193883 173.986924
Comments:

Physical CharacteristicPukeiti recorded 238 mm (23.8 cm) of rain from 3pm on the 8th to late night on the 9th.

FloodingFlooding at Tataraimaka
Map Location: -39.154851 173.917499
Comments:

Affected LifelineState Highway 45 at Tataraimaka was closed during the morning of the 9th after a blocked culvert caused water to spew all over the road. A large section of road 10 m deep and 20 m wide was washed out.

FloodingFlooding at Waitara River
Map Location: -39.077501 174.305362
Comments:

ImpactThe Waitara River spilled onto the flood plain.

Manawatu-Wanganui

Heavy RainHeavy Rain at Manawatu-Wanganui
Comments:

CommentHeavy rain fell in the Horowhenua district.

Wellington

LandslideLandslide at Otaki
Map Location: -40.750818 175.14738
Comments:

Affected LifelineA massive slip occurred near Otaki, disrupting traffic.

Marlborough

Heavy RainHeavy Rain at Marlborough
Comments:

CommentHeavy rain fell in Marlborough.

Heavy RainHeavy Rain at Pelorus Sound
Map Location: -41.158048 173.860444
Comments:

Physical CharacteristicPelorus Sound received 100 mm (10.0 cm) of rain in 24 hours.

Tasman-Nelson

Heavy RainHeavy Rain at Nelson
Map Location: -41.268476 173.297338
Comments:

CommentHeavy rain fell in Nelson.

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

FloodingFlooding
Comments:

ImpactFlood waters inundated some Nelson homes.

EvacueesSome homes were evacuated on the 9th and 10th.

West Coast

Heavy RainHeavy Rain at Collier Creek
Map Location: -42.990751 171.003384
Comments:

Physical CharacteristicColliers Creek recorded daily totals for seven days prior to the event of: 213 mm, 56 mm, 1 mm, ? mm, ? mm, 17 mm, and 95 mm.

Physical CharacteristicColliers Creek recorded a maximum intensity of 24 mm (2.4 cm) - the highest one hour rainfall intensity recorded in the 48 hours prior to event peak.

FloodingFlooding
Comments:

Peak River LevelThe Hokitika River at Colliers Creek recorded a peak level of 6.316 m on the 8th (Return Period approximately 10 years).

Heavy RainHeavy Rain at Cropp River
Map Location: -43.078492 171.000521
Comments:

Physical CharacteristicCropp recorded daily totals for seven days prior to the event of: 245 mm, 83 mm, 0 mm, ? mm, ? mm, 14 mm, and 131 mm.

Physical CharacteristicCropp recorded a maximum intensity of 22 mm (2.2 cm) - the highest one hour rainfall intensity recorded in the 48 hours prior to event peak.

References

Headline: Region on floodwatch as more rain forecast.
The Daily News, 10 October 1998.
Major weather events in New Zealand, Floods and High Rainfall, Floods to 30 Sep 2005.
Meteorological Society of New Zealand (Inc.). Newsletter 75, December 1998.
Southland Regional Council (CD).

October 1998 North Island and Upper South Island Flooding ( 1998-10-08 )

Heavy rain brought flooding and slips to parts of the North Island and upper South Island. Rainfall in Taranaki was extreme, and extensive damage was done to roads.

New Zealand

Multi HazardMulti Hazard at New Zealand
Duration:   3  days - From the 8th to the 10th of October.
Comments:
Heavy RainHeavy Rain
Comments:

CommentOn the 8th, high rainfall first occurred in Nelson and Marlborough Sounds, then spread north to Taranaki and the Bay of Islands.

Northland

Heavy RainHeavy Rain at Bay of Islands
Map Location: -35.181318 174.199165
Comments:

CommentHeavy rain fell in the Bay of Islands.

Taranaki

Heavy RainHeavy Rain at Taranaki
Comments:

CommentHeavy rain fell in Taranaki.

CommentThe rainfall ARI was over a 100 year event.

FloodingFlooding
Comments:

Affected LifelineRivers overflowed and severe surface flooding occurred on north and central Taranaki roads, causing road closures. State Highway 3 at Egmont Village and Tariki was closed for a time on the 9th.

CommentThe floods were described as the "worst in more that 40 years".

CommentAll rivers around the main ring plain were in a state of moderate to high flooding.

LandslideLandslide
Comments:

Affected LifelineMinor slips occurred around the region, and some huge slips came down on roads.

Multi HazardMulti Hazard
Comments:

Affected LifelineExtensive damage was done to roads.

Heavy RainHeavy Rain at Dawson Falls
Map Location: -39.321582 174.105391
Comments:

Physical CharacteristicDawson Falls recorded 514 mm (51.4 cm) of rain from 3pm on the 8th to late night on the 9th.

Heavy RainHeavy Rain at Egmont Village
Map Location: -39.144561 174.148737
Comments:

Physical CharacteristicEgmont Village recorded 202 mm (20.2 cm) of rain from 3pm on the 8th to late night on the 9th.

Heavy RainHeavy Rain at Mount Taranaki
Map Location: -39.295865 174.063806
Comments:

Physical CharacteristicMt Taranaki recorded 905 mm (90.5 cm) of rain in 48 hours to the 10th.

Physical CharacteristicMt Taranaki recorded 1100 mm (110.0 cm) of rain in 58 hours.

Heavy RainHeavy Rain at New Plymouth
Map Location: -39.051214 174.06972
Comments:

Physical CharacteristicNew Plymouth Airport recorded 232 mm (23.2 cm) of rain in 24 hours.

FloodingFlooding
Comments:

ImpactThe Waiwhakaiho River at the meeting of the Waters overflowed into Burgess park.

Heavy RainHeavy Rain at North Egmont
Map Location: -39.269979 174.085413
Comments:

Physical CharacteristicNorth Egmont Station recorded 1114 mm (111.4 cm) of rain in three days.

Physical CharacteristicNorth Egmont recorded 670 mm (67.0 cm) of rain from 3pm on the 8th to late night on the 9th.

CommentThe deluge at North Egmont was so heavy it equalled the worst downpour since records began in 1990.

FloodingFlooding at Opunake
Map Location: -39.456198 173.859526
Comments:

ImpactOpunake was the worst-hit area, with a number of homes flooded.

EvacueesPeople were evacuated at Opunake.

Heavy RainHeavy Rain at Pukeiti Hill
Map Location: -39.193883 173.986924
Comments:

Physical CharacteristicPukeiti recorded 238 mm (23.8 cm) of rain from 3pm on the 8th to late night on the 9th.

FloodingFlooding at Tataraimaka
Map Location: -39.154851 173.917499
Comments:

Affected LifelineState Highway 45 at Tataraimaka was closed during the morning of the 9th after a blocked culvert caused water to spew all over the road. A large section of road 10 m deep and 20 m wide was washed out.

FloodingFlooding at Waitara River
Map Location: -39.077501 174.305362
Comments:

ImpactThe Waitara River spilled onto the flood plain.

Manawatu-Wanganui

Heavy RainHeavy Rain at Manawatu-Wanganui
Comments:

CommentHeavy rain fell in the Horowhenua district.

Wellington

LandslideLandslide at Otaki
Map Location: -40.750818 175.14738
Comments:

Affected LifelineA massive slip occurred near Otaki, disrupting traffic.

Marlborough

Heavy RainHeavy Rain at Marlborough
Comments:

CommentHeavy rain fell in Marlborough.

Heavy RainHeavy Rain at Pelorus Sound
Map Location: -41.158048 173.860444
Comments:

Physical CharacteristicPelorus Sound received 100 mm (10.0 cm) of rain in 24 hours.

Tasman-Nelson

Heavy RainHeavy Rain at Nelson
Map Location: -41.268476 173.297338
Comments:

CommentHeavy rain fell in Nelson.

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

FloodingFlooding
Comments:

ImpactFlood waters inundated some Nelson homes.

EvacueesSome homes were evacuated on the 9th and 10th.

West Coast

Heavy RainHeavy Rain at Collier Creek
Map Location: -42.990751 171.003384
Comments:

Physical CharacteristicColliers Creek recorded daily totals for seven days prior to the event of: 213 mm, 56 mm, 1 mm, ? mm, ? mm, 17 mm, and 95 mm.

Physical CharacteristicColliers Creek recorded a maximum intensity of 24 mm (2.4 cm) - the highest one hour rainfall intensity recorded in the 48 hours prior to event peak.

FloodingFlooding
Comments:

Peak River LevelThe Hokitika River at Colliers Creek recorded a peak level of 6.316 m on the 8th (Return Period approximately 10 years).

Heavy RainHeavy Rain at Cropp River
Map Location: -43.078492 171.000521
Comments:

Physical CharacteristicCropp recorded daily totals for seven days prior to the event of: 245 mm, 83 mm, 0 mm, ? mm, ? mm, 14 mm, and 131 mm.

Physical CharacteristicCropp recorded a maximum intensity of 22 mm (2.2 cm) - the highest one hour rainfall intensity recorded in the 48 hours prior to event peak.

References

Headline: Region on floodwatch as more rain forecast.
The Daily News, 10 October 1998.
Major weather events in New Zealand, Floods and High Rainfall, Floods to 30 Sep 2005.
Meteorological Society of New Zealand (Inc.). Newsletter 75, December 1998.
Southland Regional Council (CD).