NZ Historic Weather Events Catalogue

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May 1966 New Zealand Storm ( 1966-05-22 )

A depression brought heavy rain, high winds, high seas, lightning and flooding to parts of Northland, Wellington, Marlborough and Canterbury. Flooding in Marlborough caused evacuations. In Northland, 29 people drowned in a shipwreck in high seas.

New Zealand

Multi HazardMulti Hazard at New Zealand
Duration:   3  days - From the 22nd to the 24th of May.
Comments:

CauseA depression moved southeasterly from Lord Howe Island towards the centre of New Zealand. It was accompained by a cloud front and resulted in gale force southerly winds in the Cook Strait area. The depression moved away south from Northland on the morning of the 23rd.

South Island

FloodingFlooding at South Island
Comments:

CommentThe sight of the floods in some areas was comparable to those of the 1923 flood.

Affected LifelineThe flood waters of the Omaka River cut the main highway from Blenheim to Nelson and the West Coast.

Affected LifelineThe railway between Marlborough and Canterbury was cut due to flood damage to the bridge over the Ure River and the Clarence bridge. There would be no rail traffic between Picton and Christchurch for at least five weeks.

Multi HazardMulti Hazard
Comments:

Affected LifelineThe main south highway was blocked between Blenheim and Kaikoura.

Northland

LightningLightning at Northland
Comments:

CommentAn electrical storm was experienced in Northland on the night of the 22nd and early morning of the 23rd.

LightningLightning at Bay of Islands
Map Location: -35.181318 174.199165
Comments:

CommentA violent thunderstorm passed over the Bay of Islands late on the afternoon of the 22nd.

Affected LifelinePower cuts occurred over a wide area from 5pm after high tension fuses were 'blown' on six transformers, mainly in the Russell area. The places affected included Opua, Paihia, Russell, Parekura Bay, Otehei Bay, Waihaha, Karetu and Taumarere. Some places were reconnected at 6:15pm but some were still without power at 8:30pm.

High Wind GustsHigh Wind / Gust at Cape Reinga
Map Location: -34.427834 172.679516
Comments:

Peak Wind SpeedCape Reinga recorded a south-west gust of 68 knots (126 km/hr) at 6am on the 23rd.

Physical CharacteristicBefore the peak gust, the wind was blowing steadily at 55 knots (102 km/hr).

LightningLightning at Dargaville
Map Location: -35.944137 173.869958
Comments:

Property DamageLightning struck the main classroom block at Dargaville High School, leaving a 6-foot square hole in one side of the roof and a smaller hole in the other. Another classroom block was also damaged and some rooms were damaged by water getting inside.

Heavy RainHeavy Rain
Comments:

Physical CharacteristicDargaville recorded 1.10 in (2.8 cm) of rain in the 24 hours to 8am on the 23rd.

High Wind GustsHigh Wind / Gust
Comments:

Affected LifelineSome phone connetions were cut for a short time on the night of the 22nd after a tree fell on the main toll line at Ruawai.

Multi HazardMulti Hazard at Hikurangi
Map Location: -35.597981 174.28778
Comments:

Affected LifelineHikurangi was affected by brief power cuts during the night of the 22nd.

High Wind GustsHigh Wind / Gust at Kaikohe
Map Location: -35.406232 173.80745
Comments:

CommentAt Kaikohe, it was a rough and windy during the night of the 22nd.

Heavy RainHeavy Rain
Comments:

Physical CharacteristicKaikohe recorded 1.03 in (2.6 cm) of rain in the 24 hours to 8am on the 23rd.

High Wind GustsHigh Wind / Gust at Kaitaia
Map Location: -35.107541 173.248564
Comments:

Peak Wind SpeedKaitaia recorded a peak westerely gust of 57 knots (106 km/hr) at 6am on the 23rd.

Heavy RainHeavy Rain
Comments:

CommentThe rainfall at Kaitaia was light.

Multi HazardMulti Hazard at Marsden Point
Map Location: -35.885004 174.458309
Comments:

ImpactNorth-easterly winds and high seas delayed pipe-laying work in the sea off the Marsden power station on the 22nd.

DamageThe dredge lost some of its pipes ashore during the storm.

Maritime / CoastalMaritime / Coastal at Pandora
Map Location: -34.453485 172.776369
Comments:

CasualtiesThe "Kaitawa" struck the infamous Pandora Bank in huge seas off Cape Reinga and sank on the 23rd. The entire crew of 29 drowned.

Multi HazardMulti Hazard
Comments:

CommentThe weather was deteriorating, with a heavy swell, very rough seas, high winds and frequent rainsqualls.

Physical CharacteristicThere were westerly winds of 35 knots (65 km/hr).

High Wind GustsHigh Wind / Gust at Ruawai
Map Location: -36.137261 174.025402
Comments:

Affected LifelineAbout 50 Ruawai phone lines were out for a short time on the night of the 22nd after a tree fell on the main toll line.

LightningLightning at Whangarei
Map Location: -35.719519 174.298397
Comments:

Affected LifelineWhangarei was affected by power cuts.

High Wind GustsHigh Wind / Gust
Comments:

Physical CharacteristicA squall at about 6pm on the 22nd brought gusts of wind up to 34 knots (63 km/hr).

CommentThe wind began to increase at 3:30am on the 23rd.

Peak Wind SpeedWhangarei Airport recorded gusts of 57 knots (106 km/hr) at about 6:15am on the 23rd.

Physical CharacteristicThe winds averaged about 40 knots (74 km/hr) at 6:15am.

Heavy RainHeavy Rain
Comments:

Physical CharacteristicWhangarei recorded 1 in (1.9 cm) of rain in the 24 hours to 9am on the 23rd.

Property DamageThe storm caused some scouring at the Craig Subdivision, Morningside.

Multi HazardMulti Hazard
Comments:

CommentThe barometer dropped suddenly in the 24 hours to 9am on the 23rd. It began to rise again after 6:15am.

Affected LifelineOtangarei and Onerahi were affected by power cuts during the night of the 22nd.

Wellington

Heavy RainHeavy Rain at Hutt River
Map Location: -41.162848 174.974804
Comments:

Physical CharacteristicHutt Valley received about 3 in (7.6 cm) of rain in the 24 hours to 9am on the 24th.

Physical CharacteristicThe Hutt River rose 7 ft 6 in (2.29 m) above normal on the 23rd.

FloodingFlooding at Lower Hutt
Map Location: -41.216677 174.934068
Comments:

DamageDamage was done to roads, bridges and houses in Lower Hutt.

Affected LifelineIn Stokes Valley, water scoured out a 6-foot (1.8-m) hole halfway across a street.

Heavy RainHeavy Rain at Upper Hutt
Map Location: -41.139372 175.055716
Comments:

ImpactThe Silverstream post office was flooded.

FloodingFlooding
Comments:

DamageDamage was done to roads, bridges and houses in Pinehaven.

FloodingFlooding at Whitemans Valley
Map Location: -41.168118 175.085216
Comments:

DamageDamage was done to roads, bridges and houses in Whitemans Valley.

Marlborough

Heavy RainHeavy Rain at Marlborough
Comments:

CommentHeavy rain fell in Marlborough overnight on the 23rd.

Physical CharacteristicThe hills to the south of Blenheim received 9 in (22.9 cm) of rain in 24 hours.

Physical CharacteristicThe Wairau Plains received 3-3.5 in (7.6-8.9 cm) of rain in 24 hours.

Physical CharacteristicThe hills to the north of the Wairau Plains received up to 11 in (27.9 cm) of rain in 24 hours.

FloodingFlooding
Comments:

CommentHeavy and persistent rain caused severe flooding in Marlborough on the 23rd and 24th.

CommentIn northern Marlborough, all streams and rivers were exceptionally high, and most valley floors were awash. All streams south of the Wairau River were in high flood.

DamageConsiderable damage was done to stream banks by erosion.

Affected LifelineBridges were damaged.

Multi HazardMulti Hazard
Comments:

Affected LifelineThere were blocked roads in most parts of the district.

Affected LifelineThe main trunk railway was cut.

Affected LifelinePower lines were down.

High Wind GustsHigh Wind / Gust
Comments:

CommentThe rain was accompained by a outherly gale.

LandslideLandslide
Comments:

CommentNumerous slips occurred.

Heavy RainHeavy Rain at Avon River
Map Location: -41.78626 173.543276
Comments:

Physical CharacteristicThe Avon catchment received over 4 in (10.2 cm) of rain.

Heavy RainHeavy Rain at Awatere River
Map Location: -42.0784 173.301575
Comments:

Physical CharacteristicThe Awatere area received 3-5 in (7.6-12.7 cm) of rain in 24 hours.

FloodingFlooding at Blenheim
Map Location: -41.517124 173.949021
Comments:

CommentUncontrolled flows from the other two rivers backed up in the Opawa River Floodway below Blenheim and overflows occurred. The Opawa River was swollen and topped the stopbank and surface flooding occurred from spring-fed creeks.

ImpactGardens and paddocks were flooded. 200 properties on the eastern edge of Blenheim were inundated and 100 houses were entered by flood waters.

Evacuees15-20 homes in Lane Street and six homes in Meehan Street were evacuated.

Peak Water LevelThe water in Lane Street was up to 4 ft (1.2 m) deep in places.

Property DamageIn Islington there were inches of mud and silt. Furniture was upturned.

Physical CharacteristicOne home had 12 in (30 cm) of water surrounding it.

Affected LifelineLittle damage was done to Blenheim roads.

Affected LifelineThe sewerage system on the north side of Blenheim was completely flooded.

CommentThe flooding was the most serious in Blenhiem since 1923.

Peak River LevelThe Taylor River at the Borough Weir reached a gauge height of 86.441 m on the 1st.

Peak River FlowThe Taylor River at the Borough Weir had a peak discharge of 162 cumecs on the 1st, with a catchment area of 68.6 km^2.

FloodingFlooding at Elevation
Map Location: -41.307051 173.978836
Comments:

ImpactIn the Picton side of Elevation several houses were surrounded by water.

FloodingFlooding at Fairhall
Map Location: -41.530668 173.8875
Comments:

Peak River FlowThe Fairhall River had a peak flow of 5,000 cusecs (142 cumecs).

ImpactSchools in Fairhall were closed.

Heavy RainHeavy Rain at Havelock
Map Location: -41.278554 173.755773
Comments:

Physical CharacteristicHavelock received over 5 in (12.7 cm) of rain.

FloodingFlooding at Kaituna River
Map Location: -41.385223 173.76238
Comments:

CommentThe Kaituna River was in a raging flood.

Affected LifelineThe Kaituna River was flowing over the Kaituna Bridge.

ImpactAll the reclaimed land in the delta of the Kaituna was under water. Farms in the Kaituna Valley were a sheet of water from bank to bank.

CommentThis was the worst flood since 1902. There was water in places where no amount of water had been seen for 50 years.

Stock DamageStock losses were heavy in the Kaituna Valley.

Property DamageFences were broken.

DamageThe newly developed river flats suffered from scouring.

LandslideLandslide
Comments:

CommentNumerous slips occurred.

Heavy RainHeavy Rain at Malvern Hills station
Map Location: -41.766776 173.569575
Comments:

Physical CharacteristicMalvern Hills received 4.12 in (10.5 cm) of rain in 24 hours.

FloodingFlooding at Omaka River
Map Location: -41.599192 173.746871
Comments:

Peak River FlowThe Omaka River had a peak flow of 11,600 cusecs (328 cumecs).

FloodingFlooding at Para
Map Location: -41.373589 173.936788
Comments:

ImpactSeveral houses at Para were surrounded by water.

Multi HazardMulti Hazard at Picton
Map Location: -41.295063 174.011495
Comments:

CommentThere was a severe storm at Picton overnight on the 23rd.

DamageThe storm tore into the 2384-foot Mt Freeth, scouring the south-eastern face.

Heavy RainHeavy Rain
Comments:

Physical CharacteristicPicton recorded 10.64 in (27.0 cm) of rain in 24 hours.

Physical CharacteristicPicton recorded 8.5 in (21.6 cm) of rain in the 24 hours to 9am on the 24th.

FloodingFlooding
Comments:

CommentThe Waitohi River burst its banks, causing the worst flooding in memory in Picton.

ImpactHomes were invaded by flood waters.

EvacueesSome people in the lower end of town were evacuated.

Affected LifelineTwelve 40-foot (12-m) power poles collapsed.

ImpactSchools in Picton Borough were closed. Queen Charlotte School pupils were sent home early due to surface water lapping at the buildings.

Multi HazardMulti Hazard at Queen Charlotte Sound
Map Location: -41.238142 174.081609
Comments:

Affected LifelineTelephone subscribers in parts of the Sounds were cut off.

FloodingFlooding at Seddon
Map Location: -41.674038 174.078006
Comments:

ImpactSchools in Seddon were closed.

FloodingFlooding at Waikawa
Map Location: -41.272265 174.043374
Comments:

CommentWaikawa Stream was in flood.

FloodingFlooding at Waima River
Map Location: -41.902341 174.12156
Comments:

Affected LifelineA complete set of piles of the Ure road and rail bridge was washed out.

FloodingFlooding at Ward
Map Location: -41.826945 174.143136
Comments:

ImpactSchools in Ward were closed.

Canterbury

FloodingFlooding at Clarence
Map Location: -42.156138 173.929325
Comments:

Affected LifelineThe south approach to the Clarence River rail bridge was washed out.

Heavy RainHeavy Rain at Coverham station
Map Location: -41.947172 173.881713
Comments:

Physical CharacteristicCoverham received up to 18 in (45.7 cm) of rain in 24 hours on the 23rd.

FloodingFlooding at Kaikoura
Map Location: -42.402255 173.685685
Comments:

ImpactThe Kowhai River breached its stopbank in many places and large areas of the Kaikoura plains went under water.

Damage CostRepairs to the river works cost $4,000 ($132,900 2008 dollars).

CommentRiver flows were very high in the area around Kaikoura.

Affected LifelineTransport was disrupted.

Heavy RainHeavy Rain at Kaikoura Peninsula
Map Location: -42.433618 173.710326
Comments:

Physical CharacteristicKaikoura Peninsula recorded 3.67 in (9.3 cm) of rain in 24 hours on the 23rd.

FloodingFlooding at Peketa
Map Location: -42.427962 173.59421
Comments:

Affected LifelineOn the Kahutara River, the piles of a pier moved and part of the reinforced concrete bridge subsided.

Heavy RainHeavy Rain at Puhi Puhi River
Map Location: -42.210908 173.763588
Comments:

Physical CharacteristicPuhipuhi Valley received up to 18 in (45.7 cm) of rain in 24 hours on the 23rd.

Heavy RainHeavy Rain at Seaward Kaikoura Range
Map Location: -42.260228 173.559342
Comments:

Physical CharacteristicAlong the face of the coastal Kaikouras, 9.3 in (23.6 cm) of rain fell in 24 hours on the 23rd.

References

Headline: Communications cut in Marlborough.
The Marlborough Express, 24 May 1966.
Headline: Flooding in Hutt Valley.
The Marlborough Express, 24 May 1966.
Headline: Heavy flooding in wake of storm.
The Marlborough Express, 24 May 1966.
Headline: Houses evacuated as Opawa River laps over banks in Lane Street.
The Marlborough Express, 24 May 1966.
Headline: Picton takes battering when Waitohi Stream breaks its banks.
The Marlborough Express, 24 May 1966.
Headline: Stock losses feared in Kaituna Valley.
The Marlborough Express, 24 May 1966.
Headline: Streams and rivers in high flood.
The Marlborough Express, 24 May 1966.
Headline: Grim return to flood-ravaged homes in Islington.
The Marlborough Express, 25 May 1966.
Headline: Ure and Clarence rail bridges damaged: Line out for five weeks.
The Marlborough Express, 25 May 1966.
Headline: Last life raft will hold fate of Kaitawa.
The Marlborough Express, 26 May 1966.
Headline: Little damage to town road surfaces.
The Marlborough Express, 26 May 1966.
New Zealand Meteorological Service. Meteorological Observations for 1965, Stations in New Zealand and Outlying Islands, Including the Cook Group.
Headline: Classroom blocks at Dargaville H.S. hit by lightning.
The Northern Advocate, 23 May 1966.
Headline: Weather again stops pipe-laying work.
The Northern Advocate, 23 May 1966.
Owen, R.E. (1969). Hydrology Annual No.16, 1968. Soil Conservation and Rivers Control Council. Wellington, NZ: The Ministry of Works.
Shearer, A.R. (1969). Hydrology Annual, No.14, 1966. Published by the Ministry of Works, The Soil Conservation and Rivers Control Council, Wellington, New Zealand.

May 1966 New Zealand Storm ( 1966-05-22 )

A depression brought heavy rain, high winds, high seas, lightning and flooding to parts of Northland, Wellington, Marlborough and Canterbury. Flooding in Marlborough caused evacuations. In Northland, 29 people drowned in a shipwreck in high seas.

New Zealand

Multi HazardMulti Hazard at New Zealand
Duration:   3  days - From the 22nd to the 24th of May.
Comments:

CauseA depression moved southeasterly from Lord Howe Island towards the centre of New Zealand. It was accompained by a cloud front and resulted in gale force southerly winds in the Cook Strait area. The depression moved away south from Northland on the morning of the 23rd.

South Island

FloodingFlooding at South Island
Comments:

CommentThe sight of the floods in some areas was comparable to those of the 1923 flood.

Affected LifelineThe flood waters of the Omaka River cut the main highway from Blenheim to Nelson and the West Coast.

Affected LifelineThe railway between Marlborough and Canterbury was cut due to flood damage to the bridge over the Ure River and the Clarence bridge. There would be no rail traffic between Picton and Christchurch for at least five weeks.

Multi HazardMulti Hazard
Comments:

Affected LifelineThe main south highway was blocked between Blenheim and Kaikoura.

Northland

LightningLightning at Northland
Comments:

CommentAn electrical storm was experienced in Northland on the night of the 22nd and early morning of the 23rd.

LightningLightning at Bay of Islands
Map Location: -35.181318 174.199165
Comments:

CommentA violent thunderstorm passed over the Bay of Islands late on the afternoon of the 22nd.

Affected LifelinePower cuts occurred over a wide area from 5pm after high tension fuses were 'blown' on six transformers, mainly in the Russell area. The places affected included Opua, Paihia, Russell, Parekura Bay, Otehei Bay, Waihaha, Karetu and Taumarere. Some places were reconnected at 6:15pm but some were still without power at 8:30pm.

High Wind GustsHigh Wind / Gust at Cape Reinga
Map Location: -34.427834 172.679516
Comments:

Peak Wind SpeedCape Reinga recorded a south-west gust of 68 knots (126 km/hr) at 6am on the 23rd.

Physical CharacteristicBefore the peak gust, the wind was blowing steadily at 55 knots (102 km/hr).

LightningLightning at Dargaville
Map Location: -35.944137 173.869958
Comments:

Property DamageLightning struck the main classroom block at Dargaville High School, leaving a 6-foot square hole in one side of the roof and a smaller hole in the other. Another classroom block was also damaged and some rooms were damaged by water getting inside.

Heavy RainHeavy Rain
Comments:

Physical CharacteristicDargaville recorded 1.10 in (2.8 cm) of rain in the 24 hours to 8am on the 23rd.

High Wind GustsHigh Wind / Gust
Comments:

Affected LifelineSome phone connetions were cut for a short time on the night of the 22nd after a tree fell on the main toll line at Ruawai.

Multi HazardMulti Hazard at Hikurangi
Map Location: -35.597981 174.28778
Comments:

Affected LifelineHikurangi was affected by brief power cuts during the night of the 22nd.

High Wind GustsHigh Wind / Gust at Kaikohe
Map Location: -35.406232 173.80745
Comments:

CommentAt Kaikohe, it was a rough and windy during the night of the 22nd.

Heavy RainHeavy Rain
Comments:

Physical CharacteristicKaikohe recorded 1.03 in (2.6 cm) of rain in the 24 hours to 8am on the 23rd.

High Wind GustsHigh Wind / Gust at Kaitaia
Map Location: -35.107541 173.248564
Comments:

Peak Wind SpeedKaitaia recorded a peak westerely gust of 57 knots (106 km/hr) at 6am on the 23rd.

Heavy RainHeavy Rain
Comments:

CommentThe rainfall at Kaitaia was light.

Multi HazardMulti Hazard at Marsden Point
Map Location: -35.885004 174.458309
Comments:

ImpactNorth-easterly winds and high seas delayed pipe-laying work in the sea off the Marsden power station on the 22nd.

DamageThe dredge lost some of its pipes ashore during the storm.

Maritime / CoastalMaritime / Coastal at Pandora
Map Location: -34.453485 172.776369
Comments:

CasualtiesThe "Kaitawa" struck the infamous Pandora Bank in huge seas off Cape Reinga and sank on the 23rd. The entire crew of 29 drowned.

Multi HazardMulti Hazard
Comments:

CommentThe weather was deteriorating, with a heavy swell, very rough seas, high winds and frequent rainsqualls.

Physical CharacteristicThere were westerly winds of 35 knots (65 km/hr).

High Wind GustsHigh Wind / Gust at Ruawai
Map Location: -36.137261 174.025402
Comments:

Affected LifelineAbout 50 Ruawai phone lines were out for a short time on the night of the 22nd after a tree fell on the main toll line.

LightningLightning at Whangarei
Map Location: -35.719519 174.298397
Comments:

Affected LifelineWhangarei was affected by power cuts.

High Wind GustsHigh Wind / Gust
Comments:

Physical CharacteristicA squall at about 6pm on the 22nd brought gusts of wind up to 34 knots (63 km/hr).

CommentThe wind began to increase at 3:30am on the 23rd.

Peak Wind SpeedWhangarei Airport recorded gusts of 57 knots (106 km/hr) at about 6:15am on the 23rd.

Physical CharacteristicThe winds averaged about 40 knots (74 km/hr) at 6:15am.

Heavy RainHeavy Rain
Comments:

Physical CharacteristicWhangarei recorded 1 in (1.9 cm) of rain in the 24 hours to 9am on the 23rd.

Property DamageThe storm caused some scouring at the Craig Subdivision, Morningside.

Multi HazardMulti Hazard
Comments:

CommentThe barometer dropped suddenly in the 24 hours to 9am on the 23rd. It began to rise again after 6:15am.

Affected LifelineOtangarei and Onerahi were affected by power cuts during the night of the 22nd.

Wellington

Heavy RainHeavy Rain at Hutt River
Map Location: -41.162848 174.974804
Comments:

Physical CharacteristicHutt Valley received about 3 in (7.6 cm) of rain in the 24 hours to 9am on the 24th.

Physical CharacteristicThe Hutt River rose 7 ft 6 in (2.29 m) above normal on the 23rd.

FloodingFlooding at Lower Hutt
Map Location: -41.216677 174.934068
Comments:

DamageDamage was done to roads, bridges and houses in Lower Hutt.

Affected LifelineIn Stokes Valley, water scoured out a 6-foot (1.8-m) hole halfway across a street.

Heavy RainHeavy Rain at Upper Hutt
Map Location: -41.139372 175.055716
Comments:

ImpactThe Silverstream post office was flooded.

FloodingFlooding
Comments:

DamageDamage was done to roads, bridges and houses in Pinehaven.

FloodingFlooding at Whitemans Valley
Map Location: -41.168118 175.085216
Comments:

DamageDamage was done to roads, bridges and houses in Whitemans Valley.

Marlborough

Heavy RainHeavy Rain at Marlborough
Comments:

CommentHeavy rain fell in Marlborough overnight on the 23rd.

Physical CharacteristicThe hills to the south of Blenheim received 9 in (22.9 cm) of rain in 24 hours.

Physical CharacteristicThe Wairau Plains received 3-3.5 in (7.6-8.9 cm) of rain in 24 hours.

Physical CharacteristicThe hills to the north of the Wairau Plains received up to 11 in (27.9 cm) of rain in 24 hours.

FloodingFlooding
Comments:

CommentHeavy and persistent rain caused severe flooding in Marlborough on the 23rd and 24th.

CommentIn northern Marlborough, all streams and rivers were exceptionally high, and most valley floors were awash. All streams south of the Wairau River were in high flood.

DamageConsiderable damage was done to stream banks by erosion.

Affected LifelineBridges were damaged.

Multi HazardMulti Hazard
Comments:

Affected LifelineThere were blocked roads in most parts of the district.

Affected LifelineThe main trunk railway was cut.

Affected LifelinePower lines were down.

High Wind GustsHigh Wind / Gust
Comments:

CommentThe rain was accompained by a outherly gale.

LandslideLandslide
Comments:

CommentNumerous slips occurred.

Heavy RainHeavy Rain at Avon River
Map Location: -41.78626 173.543276
Comments:

Physical CharacteristicThe Avon catchment received over 4 in (10.2 cm) of rain.

Heavy RainHeavy Rain at Awatere River
Map Location: -42.0784 173.301575
Comments:

Physical CharacteristicThe Awatere area received 3-5 in (7.6-12.7 cm) of rain in 24 hours.

FloodingFlooding at Blenheim
Map Location: -41.517124 173.949021
Comments:

CommentUncontrolled flows from the other two rivers backed up in the Opawa River Floodway below Blenheim and overflows occurred. The Opawa River was swollen and topped the stopbank and surface flooding occurred from spring-fed creeks.

ImpactGardens and paddocks were flooded. 200 properties on the eastern edge of Blenheim were inundated and 100 houses were entered by flood waters.

Evacuees15-20 homes in Lane Street and six homes in Meehan Street were evacuated.

Peak Water LevelThe water in Lane Street was up to 4 ft (1.2 m) deep in places.

Property DamageIn Islington there were inches of mud and silt. Furniture was upturned.

Physical CharacteristicOne home had 12 in (30 cm) of water surrounding it.

Affected LifelineLittle damage was done to Blenheim roads.

Affected LifelineThe sewerage system on the north side of Blenheim was completely flooded.

CommentThe flooding was the most serious in Blenhiem since 1923.

Peak River LevelThe Taylor River at the Borough Weir reached a gauge height of 86.441 m on the 1st.

Peak River FlowThe Taylor River at the Borough Weir had a peak discharge of 162 cumecs on the 1st, with a catchment area of 68.6 km^2.

FloodingFlooding at Elevation
Map Location: -41.307051 173.978836
Comments:

ImpactIn the Picton side of Elevation several houses were surrounded by water.

FloodingFlooding at Fairhall
Map Location: -41.530668 173.8875
Comments:

Peak River FlowThe Fairhall River had a peak flow of 5,000 cusecs (142 cumecs).

ImpactSchools in Fairhall were closed.

Heavy RainHeavy Rain at Havelock
Map Location: -41.278554 173.755773
Comments:

Physical CharacteristicHavelock received over 5 in (12.7 cm) of rain.

FloodingFlooding at Kaituna River
Map Location: -41.385223 173.76238
Comments:

CommentThe Kaituna River was in a raging flood.

Affected LifelineThe Kaituna River was flowing over the Kaituna Bridge.

ImpactAll the reclaimed land in the delta of the Kaituna was under water. Farms in the Kaituna Valley were a sheet of water from bank to bank.

CommentThis was the worst flood since 1902. There was water in places where no amount of water had been seen for 50 years.

Stock DamageStock losses were heavy in the Kaituna Valley.

Property DamageFences were broken.

DamageThe newly developed river flats suffered from scouring.

LandslideLandslide
Comments:

CommentNumerous slips occurred.

Heavy RainHeavy Rain at Malvern Hills station
Map Location: -41.766776 173.569575
Comments:

Physical CharacteristicMalvern Hills received 4.12 in (10.5 cm) of rain in 24 hours.

FloodingFlooding at Omaka River
Map Location: -41.599192 173.746871
Comments:

Peak River FlowThe Omaka River had a peak flow of 11,600 cusecs (328 cumecs).

FloodingFlooding at Para
Map Location: -41.373589 173.936788
Comments:

ImpactSeveral houses at Para were surrounded by water.

Multi HazardMulti Hazard at Picton
Map Location: -41.295063 174.011495
Comments:

CommentThere was a severe storm at Picton overnight on the 23rd.

DamageThe storm tore into the 2384-foot Mt Freeth, scouring the south-eastern face.

Heavy RainHeavy Rain
Comments:

Physical CharacteristicPicton recorded 10.64 in (27.0 cm) of rain in 24 hours.

Physical CharacteristicPicton recorded 8.5 in (21.6 cm) of rain in the 24 hours to 9am on the 24th.

FloodingFlooding
Comments:

CommentThe Waitohi River burst its banks, causing the worst flooding in memory in Picton.

ImpactHomes were invaded by flood waters.

EvacueesSome people in the lower end of town were evacuated.

Affected LifelineTwelve 40-foot (12-m) power poles collapsed.

ImpactSchools in Picton Borough were closed. Queen Charlotte School pupils were sent home early due to surface water lapping at the buildings.

Multi HazardMulti Hazard at Queen Charlotte Sound
Map Location: -41.238142 174.081609
Comments:

Affected LifelineTelephone subscribers in parts of the Sounds were cut off.

FloodingFlooding at Seddon
Map Location: -41.674038 174.078006
Comments:

ImpactSchools in Seddon were closed.

FloodingFlooding at Waikawa
Map Location: -41.272265 174.043374
Comments:

CommentWaikawa Stream was in flood.

FloodingFlooding at Waima River
Map Location: -41.902341 174.12156
Comments:

Affected LifelineA complete set of piles of the Ure road and rail bridge was washed out.

FloodingFlooding at Ward
Map Location: -41.826945 174.143136
Comments:

ImpactSchools in Ward were closed.

Canterbury

FloodingFlooding at Clarence
Map Location: -42.156138 173.929325
Comments:

Affected LifelineThe south approach to the Clarence River rail bridge was washed out.

Heavy RainHeavy Rain at Coverham station
Map Location: -41.947172 173.881713
Comments:

Physical CharacteristicCoverham received up to 18 in (45.7 cm) of rain in 24 hours on the 23rd.

FloodingFlooding at Kaikoura
Map Location: -42.402255 173.685685
Comments:

ImpactThe Kowhai River breached its stopbank in many places and large areas of the Kaikoura plains went under water.

Damage CostRepairs to the river works cost $4,000 ($132,900 2008 dollars).

CommentRiver flows were very high in the area around Kaikoura.

Affected LifelineTransport was disrupted.

Heavy RainHeavy Rain at Kaikoura Peninsula
Map Location: -42.433618 173.710326
Comments:

Physical CharacteristicKaikoura Peninsula recorded 3.67 in (9.3 cm) of rain in 24 hours on the 23rd.

FloodingFlooding at Peketa
Map Location: -42.427962 173.59421
Comments:

Affected LifelineOn the Kahutara River, the piles of a pier moved and part of the reinforced concrete bridge subsided.

Heavy RainHeavy Rain at Puhi Puhi River
Map Location: -42.210908 173.763588
Comments:

Physical CharacteristicPuhipuhi Valley received up to 18 in (45.7 cm) of rain in 24 hours on the 23rd.

Heavy RainHeavy Rain at Seaward Kaikoura Range
Map Location: -42.260228 173.559342
Comments:

Physical CharacteristicAlong the face of the coastal Kaikouras, 9.3 in (23.6 cm) of rain fell in 24 hours on the 23rd.

References

Headline: Communications cut in Marlborough.
The Marlborough Express, 24 May 1966.
Headline: Flooding in Hutt Valley.
The Marlborough Express, 24 May 1966.
Headline: Heavy flooding in wake of storm.
The Marlborough Express, 24 May 1966.
Headline: Houses evacuated as Opawa River laps over banks in Lane Street.
The Marlborough Express, 24 May 1966.
Headline: Picton takes battering when Waitohi Stream breaks its banks.
The Marlborough Express, 24 May 1966.
Headline: Stock losses feared in Kaituna Valley.
The Marlborough Express, 24 May 1966.
Headline: Streams and rivers in high flood.
The Marlborough Express, 24 May 1966.
Headline: Grim return to flood-ravaged homes in Islington.
The Marlborough Express, 25 May 1966.
Headline: Ure and Clarence rail bridges damaged: Line out for five weeks.
The Marlborough Express, 25 May 1966.
Headline: Last life raft will hold fate of Kaitawa.
The Marlborough Express, 26 May 1966.
Headline: Little damage to town road surfaces.
The Marlborough Express, 26 May 1966.
New Zealand Meteorological Service. Meteorological Observations for 1965, Stations in New Zealand and Outlying Islands, Including the Cook Group.
Headline: Classroom blocks at Dargaville H.S. hit by lightning.
The Northern Advocate, 23 May 1966.
Headline: Weather again stops pipe-laying work.
The Northern Advocate, 23 May 1966.
Owen, R.E. (1969). Hydrology Annual No.16, 1968. Soil Conservation and Rivers Control Council. Wellington, NZ: The Ministry of Works.
Shearer, A.R. (1969). Hydrology Annual, No.14, 1966. Published by the Ministry of Works, The Soil Conservation and Rivers Control Council, Wellington, New Zealand.