NZ Historic Weather Events Catalogue

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July-August 2007 New Zealand Storm ( 2007-07-29 )

Taranaki was hit by a small tornado on the 31st of July while Canterbury, Otago and Stewart Island experience heavy rain, flooding and landslides from the 29th of July to the 1st of August.

New Zealand

Multi HazardMulti Hazard at New Zealand
Comments:

CauseOn the 27th and 28th, a low developed in the north of the Tasman Sea. On the 29th, the low deepened rapidly and moved south, becoming slow moving to the west and central of New Zealand by the 30th. The large low pressure system also set up a moist easterly flow over southern New Zealand, which lead to rain and flooding, as well as the unsettled weather in the North Island (such as tornadoes) on the 31st.

South Island

Multi HazardMulti Hazard at South Island
Comments:

CauseOn the 29th, MetService issued a heavy rain warning for South Canterbury and the eastern parts of Otago. A strong and moist easterly flow brought 40 mm of rain to the eastern Otago ranges overnight and a further 80 to 120mm are likely there on 31st and into the early hours of the 1st of August. The South Canterbury hills area is likely to have around 80 mm of rain in total, easing on the 30th.

Affected LifelineTransit NZ advised caution on all South Island roads overnight on the 30th, due to ice, grit and surface flooding.

FloodingFlooding
Comments:

Affected LifelineA spate of road closures were in effect in Otago and South Canterbury on the night of the 30th, as parts experienced severe surface flooding.

Taranaki

TornadoTornado at Waitara
Map Location: -38.99656 174.213734
Comments:

CommentA small tornado swept through Waitara in Taranaki on the morning of the 31st.

DamageTwo 4-tonne trailers were thrown on their sides, iron roofing was ripped and the large roller doors were crumpledf rom a New Plymouth trucking company's warehouse.

DamageThe tornado only caused cosmetic damage and there were no other reports of damage.

CommentIt caused chaos for 15-20 seconds then disappeared.

CommentSeveral people reported seeing the twister make its way inland from the sea.

Canterbury

Heavy RainHeavy Rain at Canterbury
Comments:

CommentRain was brought in by a moist easterly on the 29th and 30th and was mostly in the northern part of south Canterbury, in the foothills. The heavy rain continued for 18 hours before abated on the night of the 30th.

Physical CharacteristicThe foothills and plains of Canterbury had around 4.0 cm of rain from midnight on the 29th.

CommentThere were only light showers in the Mackenzie country.

CommentCivil Defence emergency operation centre in Waimate closed down as rain eased.

CommentThere was heavy rain in mid Canterbury overnight on the 30th and on the morning of the 31st.

FloodingFlooding
Comments:

ImpactAlong the coast, mid Canterbury farms had water pooling on the ground.

ImpactThere was surface flooding in south Canterbury. Flooding closed roads, caused at least one school to send pupils home early and cut phone links to some homes.

Maritime / CoastalMaritime / Coastal
Comments:

ImpactThere was a heavy swell warning in place. Heavy sea swells pounded the coast between Banks Peninsula and Timaru. It caused minor flooding of farmland and knocked rocks off the eastern extension at the Port of Timaru.

CommentThere was a bit of minor overtopping of sea on beaches around the Seadown area.

FloodingFlooding at Waihao River
Map Location: -44.787437 171.009356
Comments:

CommentWaihao River was running higher than other local rivers.

Heavy RainHeavy Rain at Waimate
Map Location: -44.7333 171.055364
Comments:

Physical CharacteristicWaimate recorded 4.2 cm of rain in four hours. Waimate bore the brunt of the heavy rain on the 30th in South Canterbury.

FloodingFlooding
Comments:

ImpactSeveral schools in the Waimate area were closed on the 30th due to flooding.

Declared EmergencyThe Civil Defence headquarters in Waimate was activated.

ImpactThere was extensive surface flooding around Waimate.

FloodingFlooding at Morven
Map Location: -44.81896 171.10878
Comments:

Affected LifelineRoads around Morven were extremely dangerous.

ImpactGlenavy and Morven Schools were closed early. Morven School children went home on bus at lunchtime due to fords and irrigation races filling up and flooding on the road

Physical CharacteristicIn the Morven-Glenavy area, 55 ml of rain fell in the 24 hours, half of which fell in the space of two or three hours.

Affected LifelineThere was significant flooding on State Highway 1 in the Morven and Glenavy area.

Affected LifelinePeople were advised not to drive on district roads.

ImpactThe township itself was flooded.

ImpactA farmer said the Morven Drain overflowed over his paddocks.

Heavy RainHeavy Rain at Lake Opuha farm
Comments:

Physical CharacteristicLake Opuha farm recorded 3.2 cm of rain.

Heavy RainHeavy Rain at Hadlow
Map Location: -44.37049 171.1644
Comments:

Physical CharacteristicHadlow recorded 4.4 cm of rain.

Heavy RainHeavy Rain at Ashburton
Map Location: -43.902384 171.736416
Comments:

Physical CharacteristicAshburton recorded 3.28 cm of rain overnight to 9am on the 31st.

Heavy RainHeavy Rain at Methven
Map Location: -43.637396 171.628513
Comments:

Physical CharacteristicMethven recorded 3.25 cm of rain.

Snow / IceSnow / Ice at Mount Hutt
Map Location: -43.471387 171.526568
Comments:

Physical CharacteristicPrecipitation fell as snow on Mt Hutt. The Mt Hutt Ski Area received 22 cm of snow by 8am on the 31st and it was not open during morning due to the heavy snow.

Heavy RainHeavy Rain at Lowcliffe
Map Location: -44.37049 171.1644
Comments:

Physical CharacteristicA Lowcliffe farmer said they had approximately 1 1/2 inches (3.81 cm) of rain.

Heavy RainHeavy Rain at Timaru
Map Location: -44.398445 171.2552
Comments:

ImpactCouncil workers blamed illegal plumbing for overloading the sewer system, which caused effluent-laden water to spew out from manholes.

Otago

Multi HazardMulti Hazard at Otago
Duration:   4  days - Heavy rain started on the 29th and lead to flooding which continued until the 1st.
Comments:
Heavy RainHeavy Rain
Comments:

CommentOtago received a months worth of rain in just 24 hours.

CommentPersistent rain caused widespread flooding from Balclutha to South Canterbury on the 30th.

Physical CharacteristicRainfall exceeded 10.0 cm at several sites in the North Otago, Dunedin and Taieri districts.

CommentCivil Defence emergency operation centre in Dunedin closed down as rain eased.

Affected LifelinePolice discouraged any non-essential travel in North Otago because of road conditions.

CommentCivil Defence headquarters in Otago were activated on the 30th.

FloodingFlooding
Comments:

Affected LifelineThere was extensive flooding along coastal parts of Otago, with many roads and highways north and south of Dunedin cut by floodwaters. Flooding closed State Highway 1 between Dunedin and Balclutha, Waikouaiti and Milton, and closed State Highway 38 between Pukeuri and Duntroon. State Highway 1, north of Oamaru, was closed and some parts of the highway were down to one lane but passable. State Highway 8, linking Milton with central Otago, was closed near Clarksville.

Affected LifelineSeveral roads, including parts of State Highway 1 south of Milton, remained closed on the 31st.

Affected LifelineSome motorists had to be rescued during the rain on the 30th when they were swamped trying to drive through flooded areas of North Otago. There were several crashes on the roads.

ImpactWater was waist deep running down State Highway 1 "like a river".

CommentSeveral rivers in the district remained at flood warning levels.

Heavy RainHeavy Rain at Dunedin
Map Location: -45.87911 170.502707
Comments:

Physical CharacteristicPine Hill recorded over 73 ml of rain in 24 hours.

Physical CharacteristicDunedin Airport recorded 8.1 cm of rain in 24 hours on the 30th. This rainfall almost doubled the July average.

LandslideLandslide
Comments:

ImpactRain caused slips in many areas around the city.

FloodingFlooding
Comments:

CommentThe Fire Service helped residents hit by flooding in Dunedin suburbs of Outram and Abbotsford.

CommentSome people chose to leave their homes overnight.

CommentRain was steady so rivers and streams were able to deal with most of it.

CommentThe Water of Leith was a raging torrent on the night of the 30th.

Affected LifelineDunedin streets were awash with water.

ImpactResidents reported flooding in the flat areas of Dunedin.

FloodingFlooding at Clutha District
Comments:

Declared EmergencyThere was a State of Emergency in place in the Clutha District after heavy rain and flooding prompted evacuations in the area on the night of the 30th.

EvacueesNine people were evacuated at approximately 8pm as water and sewage began entering some homes. And several people evacuated from low-lying areas in the town late on the night of the 30th.

CommentSeveral other people left their homes of their own accord.

ImpactFlooding on roads meant school buses wouldn't be running and schools were closed until further notice.

CommentClutha District Council reported parts of the Catlins, especially Papatowai, as well as Kaitangata, were badly affected by flooding.

Heavy RainHeavy Rain at Taieri Plain
Map Location: -45.88401 170.253762
Comments:

Physical CharacteristicTaieri Plain recorded 10.4 cm of rain in 48 hours.

Physical CharacteristicTaieri Plain recorded 1.25 cm of rain on the 29th.

Physical CharacteristicTaieri Plain recorded 9.15 cm of rain on the 30th.

FloodingFlooding
Comments:

EvacueesA school and houses in Mosgiel were evacuated as Silver Stream reached very high levels and continued to rise.

Peak DischargeAt 8:30pm on the 30th, Silver Stream was sitting at 147 cumecs after earlier reaching a peak of 157 cumecs. The usual flow for Silver Stream is one cumec.

Physical CharacteristicTaieri River was flowing at 800 cumecs at Outram at 8:30pm on the 30th and was still rising.

EvacueesThree houses in Mosgiel were evacuated after being flooded with stormwater.

ImpactPupils at East Taieri Primary School sent home at lunchtime on the 30th as Owhiro Stream swamped the school playground.

ImpactResidents in Mill Creek subdivision on Taieri Plain were also leaving their houses on the 30th.

Affected LifelineThree Mile Hill Road, a major route into Mosgiel, was closed on the 30th due to flooding.

Heavy RainHeavy Rain at Milton
Map Location: -46.123263 169.966084
Comments:

Physical CharacteristicMilton recorded over 9.0 cm of rain on the 30th.

FloodingFlooding
Comments:

Declared EmergencyMilton was worst affected area and a State of Emergency was declared around Milton on the night of the 30th.

CommentThe Milton Volunteer Fire Bridgade received the first evacuation call at 2:50am on the 30th in Waihola.

ImpactUp to 30 houses were damaged by floodwaters or sewage.

ImpactSt Mary's Primary School was shut on the 31st.

Evacuees46 people were confirmed to have evacuated from their homes in Milton.

Impact13-22 houses were deemed "uninhabitable" and unsafe for residents to return to.

Physical CharacteristicOn the 31st, one Milton house still had water 35 cm deep in the living room.

InjuriesNo injuries were reported as of the 1st of August.

ImpactFlooding wreaked havoc on residents living on the outskirts of Milton.

Stock DamageOne farm on the main road on the south of town lost 10-12 lambs on the night of the 30th.

Affected LifelineFlooding on roads between Milton and Waihola had motorists up to their bumpers in water in several places along State Highway 1 on the 30th.

Affected LifelineFlooding in Waihola led to the closure of the main road through town just before 5pm on the 30th.

Affected LifelineRoad closures at 5:30pm on the 30th were North Branch Road, Finch Road, the Back Road, Circle Hill Road, Ossian Street, Spenser Street and Keinan Avenue. Lakeside Road from Station Road to State Highway 1 was also closed.

Declared EmergencyCDE was declared for the Bruce Ward at 8:40pm on the 30th and was lifted at 9am on the 31st.

Affected LifelineRoad closures at 3:30pm on the 1st of August were Toko Mouth Road and Falla Burn Road from Hillend Road to State Highway 8.

ImpactPeople were urged to keep out of the flooded areas as much as possible because of sewage contamination.

Impact38 homeless Milton residents had their homes devastated by the floods.

Property Damage14 houses were still uninhabitable in south Milton on the 13th.

Property Damage6 of the 14 affected properties were rentals and some didn't have contents insurance.

FloodingFlooding at Palmerston
Map Location: -45.483857 170.721017
Comments:

EvacueesResidents of three Happy Valley houses, south of Palmerston, were evacuated on the night of the 30th and returned on the night of the 31st.

Stewart Island

Heavy RainHeavy Rain at Stewart Island
Duration:   5  days - More than a months worth of rain fell on Stewart Island in the past five days to the 31st and caused flooding and widespread slips.
Comments:
Multi HazardMulti Hazard
Comments:

Affected LifelineHigh winds and heavy seas played havoc, pulling roads into the sea and causing landslips 30 m wide.

Heavy RainHeavy Rain at Halfmoon Bay
Map Location: -44.37049 171.1644
Comments:

Physical CharacteristicOban (Halfmoon Bay) recorded 11.8 cm of rain from the 25th to the 31st.

LandslideLandslide
Comments:

Affected LifelineSlips along the road to Ackers Point completely blocked the road access to the five or so homes on the road.

ImpactThere were slips on the Horseshoe Track.

Affected LifelineThere were several slips and washouts in the small settled part of island and some homes were cut off.

DamageA landslip near the wharf destroyed a car, which was crushed by a falling boulder and a tree.

FloodingFlooding
Comments:

ImpactThe flooding left some residents without access to their homes.

Maritime / CoastalMaritime / Coastal
Comments:

DamageHeavy seas sank a yacht after ripping it from its moorings near Thule early on the morning of the 30th.

Heavy RainHeavy Rain at South West Cape
Map Location: -47.28148 167.46584
Comments:

Physical CharacteristicSouth West Cape recorded 17.7 cm of rain from the 25th to the 31st. It was a record rainfall.

References

Headline: Dozens still homeless.
Clutha Leader, 2 August 2007.
Meteorological Society of New Zealand (Inc.), Newsletter 110, September 2007
NIWA and GNS Science. (2007). Natural Hazards 2007, Hazards summary 2007, Heavy rain and floods, p6.
Headline: Another tornado sweeps Taranaki.
tvnz.co.nz, Source: One News, 31 July 2007.
Headline: Otago reeling after heavy rain.
tvnz.co.nz, Source: ONE News/ Newstalk ZB, 31 July 2007.
Headline: Mount Hutt welcomes snowfall.
www.ashburton guardian.co.nz, 31 July 2007.
Headline: Clutha State of Emergency.
www.newswire.co.nz, Source: NewsRoom, 31 July 2007, 7:20am.
Headline: South mops up after floods.
www.nzherald.co.nz, Source: NZ Herald and NZPA, 31 July 2007, 11:12am.
Headline: New twister hits Taranaki.
www.nzherald.co.nz, Source: NZ Herald and NZPA, 31 July 2007, 11:35am.
Headline: Surface flooding closes South Island roads.
www.radionz.co.nz/news, 30 July 2007, 8:46pm.
Headline: Wind and Rain for South Canterbury, Eastern Otago.
www.scoop.co.nz, Source: MetService, 30 July 2007, 1:06pm.
Headline: Floodwaters recede in Otago.
www.stuff.co.nz, 1 August 2007.
Headline: Heavy rain has southern regions on high alert.
www.stuff.co.nz, Source: NZPA, 30 July 2007.
Headline: Heavy rains abate in Sth Canterbury, Otago.
www.stuff.co.nz, Source: NZPA, 31 July 2007.
Headline: Milton residents begin clean-up as flood waters recede.
www.stuff.co.nz, Source: NZPA, 31 July 2007.
Headline: Milton residents unable to return home coping well: council.
www.stuff.co.nz, Source: Southland Times, 13 August 2007.
Headline: Floodwaters threaten south.
www.stuff.co.nz, Source: Southland Times, 31 July 2007.
Headline: Stewart Island deluge causes floods, slips.
www.stuff.co.nz, Source: Southland Times, 31 July 2007.
Headline: Flooding hits South Canterbury and Otago.
www.stuff.co.nz, Source: The Press, 30 July 2007.
Headline: Heavy rain brings flooding.
www.stuff.co.nz, Source: The Timaru Herald, 31 July 2007.
Headline: Flooding forces Otago families from their homes.
www.tv3.co.nz, 31 July 2007.

July-August 2007 New Zealand Storm ( 2007-07-29 )

Taranaki was hit by a small tornado on the 31st of July while Canterbury, Otago and Stewart Island experience heavy rain, flooding and landslides from the 29th of July to the 1st of August.

New Zealand

Multi HazardMulti Hazard at New Zealand
Comments:

CauseOn the 27th and 28th, a low developed in the north of the Tasman Sea. On the 29th, the low deepened rapidly and moved south, becoming slow moving to the west and central of New Zealand by the 30th. The large low pressure system also set up a moist easterly flow over southern New Zealand, which lead to rain and flooding, as well as the unsettled weather in the North Island (such as tornadoes) on the 31st.

South Island

Multi HazardMulti Hazard at South Island
Comments:

CauseOn the 29th, MetService issued a heavy rain warning for South Canterbury and the eastern parts of Otago. A strong and moist easterly flow brought 40 mm of rain to the eastern Otago ranges overnight and a further 80 to 120mm are likely there on 31st and into the early hours of the 1st of August. The South Canterbury hills area is likely to have around 80 mm of rain in total, easing on the 30th.

Affected LifelineTransit NZ advised caution on all South Island roads overnight on the 30th, due to ice, grit and surface flooding.

FloodingFlooding
Comments:

Affected LifelineA spate of road closures were in effect in Otago and South Canterbury on the night of the 30th, as parts experienced severe surface flooding.

Taranaki

TornadoTornado at Waitara
Map Location: -38.99656 174.213734
Comments:

CommentA small tornado swept through Waitara in Taranaki on the morning of the 31st.

DamageTwo 4-tonne trailers were thrown on their sides, iron roofing was ripped and the large roller doors were crumpledf rom a New Plymouth trucking company's warehouse.

DamageThe tornado only caused cosmetic damage and there were no other reports of damage.

CommentIt caused chaos for 15-20 seconds then disappeared.

CommentSeveral people reported seeing the twister make its way inland from the sea.

Canterbury

Heavy RainHeavy Rain at Canterbury
Comments:

CommentRain was brought in by a moist easterly on the 29th and 30th and was mostly in the northern part of south Canterbury, in the foothills. The heavy rain continued for 18 hours before abated on the night of the 30th.

Physical CharacteristicThe foothills and plains of Canterbury had around 4.0 cm of rain from midnight on the 29th.

CommentThere were only light showers in the Mackenzie country.

CommentCivil Defence emergency operation centre in Waimate closed down as rain eased.

CommentThere was heavy rain in mid Canterbury overnight on the 30th and on the morning of the 31st.

FloodingFlooding
Comments:

ImpactAlong the coast, mid Canterbury farms had water pooling on the ground.

ImpactThere was surface flooding in south Canterbury. Flooding closed roads, caused at least one school to send pupils home early and cut phone links to some homes.

Maritime / CoastalMaritime / Coastal
Comments:

ImpactThere was a heavy swell warning in place. Heavy sea swells pounded the coast between Banks Peninsula and Timaru. It caused minor flooding of farmland and knocked rocks off the eastern extension at the Port of Timaru.

CommentThere was a bit of minor overtopping of sea on beaches around the Seadown area.

FloodingFlooding at Waihao River
Map Location: -44.787437 171.009356
Comments:

CommentWaihao River was running higher than other local rivers.

Heavy RainHeavy Rain at Waimate
Map Location: -44.7333 171.055364
Comments:

Physical CharacteristicWaimate recorded 4.2 cm of rain in four hours. Waimate bore the brunt of the heavy rain on the 30th in South Canterbury.

FloodingFlooding
Comments:

ImpactSeveral schools in the Waimate area were closed on the 30th due to flooding.

Declared EmergencyThe Civil Defence headquarters in Waimate was activated.

ImpactThere was extensive surface flooding around Waimate.

FloodingFlooding at Morven
Map Location: -44.81896 171.10878
Comments:

Affected LifelineRoads around Morven were extremely dangerous.

ImpactGlenavy and Morven Schools were closed early. Morven School children went home on bus at lunchtime due to fords and irrigation races filling up and flooding on the road

Physical CharacteristicIn the Morven-Glenavy area, 55 ml of rain fell in the 24 hours, half of which fell in the space of two or three hours.

Affected LifelineThere was significant flooding on State Highway 1 in the Morven and Glenavy area.

Affected LifelinePeople were advised not to drive on district roads.

ImpactThe township itself was flooded.

ImpactA farmer said the Morven Drain overflowed over his paddocks.

Heavy RainHeavy Rain at Lake Opuha farm
Comments:

Physical CharacteristicLake Opuha farm recorded 3.2 cm of rain.

Heavy RainHeavy Rain at Hadlow
Map Location: -44.37049 171.1644
Comments:

Physical CharacteristicHadlow recorded 4.4 cm of rain.

Heavy RainHeavy Rain at Ashburton
Map Location: -43.902384 171.736416
Comments:

Physical CharacteristicAshburton recorded 3.28 cm of rain overnight to 9am on the 31st.

Heavy RainHeavy Rain at Methven
Map Location: -43.637396 171.628513
Comments:

Physical CharacteristicMethven recorded 3.25 cm of rain.

Snow / IceSnow / Ice at Mount Hutt
Map Location: -43.471387 171.526568
Comments:

Physical CharacteristicPrecipitation fell as snow on Mt Hutt. The Mt Hutt Ski Area received 22 cm of snow by 8am on the 31st and it was not open during morning due to the heavy snow.

Heavy RainHeavy Rain at Lowcliffe
Map Location: -44.37049 171.1644
Comments:

Physical CharacteristicA Lowcliffe farmer said they had approximately 1 1/2 inches (3.81 cm) of rain.

Heavy RainHeavy Rain at Timaru
Map Location: -44.398445 171.2552
Comments:

ImpactCouncil workers blamed illegal plumbing for overloading the sewer system, which caused effluent-laden water to spew out from manholes.

Otago

Multi HazardMulti Hazard at Otago
Duration:   4  days - Heavy rain started on the 29th and lead to flooding which continued until the 1st.
Comments:
Heavy RainHeavy Rain
Comments:

CommentOtago received a months worth of rain in just 24 hours.

CommentPersistent rain caused widespread flooding from Balclutha to South Canterbury on the 30th.

Physical CharacteristicRainfall exceeded 10.0 cm at several sites in the North Otago, Dunedin and Taieri districts.

CommentCivil Defence emergency operation centre in Dunedin closed down as rain eased.

Affected LifelinePolice discouraged any non-essential travel in North Otago because of road conditions.

CommentCivil Defence headquarters in Otago were activated on the 30th.

FloodingFlooding
Comments:

Affected LifelineThere was extensive flooding along coastal parts of Otago, with many roads and highways north and south of Dunedin cut by floodwaters. Flooding closed State Highway 1 between Dunedin and Balclutha, Waikouaiti and Milton, and closed State Highway 38 between Pukeuri and Duntroon. State Highway 1, north of Oamaru, was closed and some parts of the highway were down to one lane but passable. State Highway 8, linking Milton with central Otago, was closed near Clarksville.

Affected LifelineSeveral roads, including parts of State Highway 1 south of Milton, remained closed on the 31st.

Affected LifelineSome motorists had to be rescued during the rain on the 30th when they were swamped trying to drive through flooded areas of North Otago. There were several crashes on the roads.

ImpactWater was waist deep running down State Highway 1 "like a river".

CommentSeveral rivers in the district remained at flood warning levels.

Heavy RainHeavy Rain at Dunedin
Map Location: -45.87911 170.502707
Comments:

Physical CharacteristicPine Hill recorded over 73 ml of rain in 24 hours.

Physical CharacteristicDunedin Airport recorded 8.1 cm of rain in 24 hours on the 30th. This rainfall almost doubled the July average.

LandslideLandslide
Comments:

ImpactRain caused slips in many areas around the city.

FloodingFlooding
Comments:

CommentThe Fire Service helped residents hit by flooding in Dunedin suburbs of Outram and Abbotsford.

CommentSome people chose to leave their homes overnight.

CommentRain was steady so rivers and streams were able to deal with most of it.

CommentThe Water of Leith was a raging torrent on the night of the 30th.

Affected LifelineDunedin streets were awash with water.

ImpactResidents reported flooding in the flat areas of Dunedin.

FloodingFlooding at Clutha District
Comments:

Declared EmergencyThere was a State of Emergency in place in the Clutha District after heavy rain and flooding prompted evacuations in the area on the night of the 30th.

EvacueesNine people were evacuated at approximately 8pm as water and sewage began entering some homes. And several people evacuated from low-lying areas in the town late on the night of the 30th.

CommentSeveral other people left their homes of their own accord.

ImpactFlooding on roads meant school buses wouldn't be running and schools were closed until further notice.

CommentClutha District Council reported parts of the Catlins, especially Papatowai, as well as Kaitangata, were badly affected by flooding.

Heavy RainHeavy Rain at Taieri Plain
Map Location: -45.88401 170.253762
Comments:

Physical CharacteristicTaieri Plain recorded 10.4 cm of rain in 48 hours.

Physical CharacteristicTaieri Plain recorded 1.25 cm of rain on the 29th.

Physical CharacteristicTaieri Plain recorded 9.15 cm of rain on the 30th.

FloodingFlooding
Comments:

EvacueesA school and houses in Mosgiel were evacuated as Silver Stream reached very high levels and continued to rise.

Peak DischargeAt 8:30pm on the 30th, Silver Stream was sitting at 147 cumecs after earlier reaching a peak of 157 cumecs. The usual flow for Silver Stream is one cumec.

Physical CharacteristicTaieri River was flowing at 800 cumecs at Outram at 8:30pm on the 30th and was still rising.

EvacueesThree houses in Mosgiel were evacuated after being flooded with stormwater.

ImpactPupils at East Taieri Primary School sent home at lunchtime on the 30th as Owhiro Stream swamped the school playground.

ImpactResidents in Mill Creek subdivision on Taieri Plain were also leaving their houses on the 30th.

Affected LifelineThree Mile Hill Road, a major route into Mosgiel, was closed on the 30th due to flooding.

Heavy RainHeavy Rain at Milton
Map Location: -46.123263 169.966084
Comments:

Physical CharacteristicMilton recorded over 9.0 cm of rain on the 30th.

FloodingFlooding
Comments:

Declared EmergencyMilton was worst affected area and a State of Emergency was declared around Milton on the night of the 30th.

CommentThe Milton Volunteer Fire Bridgade received the first evacuation call at 2:50am on the 30th in Waihola.

ImpactUp to 30 houses were damaged by floodwaters or sewage.

ImpactSt Mary's Primary School was shut on the 31st.

Evacuees46 people were confirmed to have evacuated from their homes in Milton.

Impact13-22 houses were deemed "uninhabitable" and unsafe for residents to return to.

Physical CharacteristicOn the 31st, one Milton house still had water 35 cm deep in the living room.

InjuriesNo injuries were reported as of the 1st of August.

ImpactFlooding wreaked havoc on residents living on the outskirts of Milton.

Stock DamageOne farm on the main road on the south of town lost 10-12 lambs on the night of the 30th.

Affected LifelineFlooding on roads between Milton and Waihola had motorists up to their bumpers in water in several places along State Highway 1 on the 30th.

Affected LifelineFlooding in Waihola led to the closure of the main road through town just before 5pm on the 30th.

Affected LifelineRoad closures at 5:30pm on the 30th were North Branch Road, Finch Road, the Back Road, Circle Hill Road, Ossian Street, Spenser Street and Keinan Avenue. Lakeside Road from Station Road to State Highway 1 was also closed.

Declared EmergencyCDE was declared for the Bruce Ward at 8:40pm on the 30th and was lifted at 9am on the 31st.

Affected LifelineRoad closures at 3:30pm on the 1st of August were Toko Mouth Road and Falla Burn Road from Hillend Road to State Highway 8.

ImpactPeople were urged to keep out of the flooded areas as much as possible because of sewage contamination.

Impact38 homeless Milton residents had their homes devastated by the floods.

Property Damage14 houses were still uninhabitable in south Milton on the 13th.

Property Damage6 of the 14 affected properties were rentals and some didn't have contents insurance.

FloodingFlooding at Palmerston
Map Location: -45.483857 170.721017
Comments:

EvacueesResidents of three Happy Valley houses, south of Palmerston, were evacuated on the night of the 30th and returned on the night of the 31st.

Stewart Island

Heavy RainHeavy Rain at Stewart Island
Duration:   5  days - More than a months worth of rain fell on Stewart Island in the past five days to the 31st and caused flooding and widespread slips.
Comments:
Multi HazardMulti Hazard
Comments:

Affected LifelineHigh winds and heavy seas played havoc, pulling roads into the sea and causing landslips 30 m wide.

Heavy RainHeavy Rain at Halfmoon Bay
Map Location: -44.37049 171.1644
Comments:

Physical CharacteristicOban (Halfmoon Bay) recorded 11.8 cm of rain from the 25th to the 31st.

LandslideLandslide
Comments:

Affected LifelineSlips along the road to Ackers Point completely blocked the road access to the five or so homes on the road.

ImpactThere were slips on the Horseshoe Track.

Affected LifelineThere were several slips and washouts in the small settled part of island and some homes were cut off.

DamageA landslip near the wharf destroyed a car, which was crushed by a falling boulder and a tree.

FloodingFlooding
Comments:

ImpactThe flooding left some residents without access to their homes.

Maritime / CoastalMaritime / Coastal
Comments:

DamageHeavy seas sank a yacht after ripping it from its moorings near Thule early on the morning of the 30th.

Heavy RainHeavy Rain at South West Cape
Map Location: -47.28148 167.46584
Comments:

Physical CharacteristicSouth West Cape recorded 17.7 cm of rain from the 25th to the 31st. It was a record rainfall.

References

Headline: Dozens still homeless.
Clutha Leader, 2 August 2007.
Meteorological Society of New Zealand (Inc.), Newsletter 110, September 2007
NIWA and GNS Science. (2007). Natural Hazards 2007, Hazards summary 2007, Heavy rain and floods, p6.
Headline: Another tornado sweeps Taranaki.
tvnz.co.nz, Source: One News, 31 July 2007.
Headline: Otago reeling after heavy rain.
tvnz.co.nz, Source: ONE News/ Newstalk ZB, 31 July 2007.
Headline: Mount Hutt welcomes snowfall.
www.ashburton guardian.co.nz, 31 July 2007.
Headline: Clutha State of Emergency.
www.newswire.co.nz, Source: NewsRoom, 31 July 2007, 7:20am.
Headline: South mops up after floods.
www.nzherald.co.nz, Source: NZ Herald and NZPA, 31 July 2007, 11:12am.
Headline: New twister hits Taranaki.
www.nzherald.co.nz, Source: NZ Herald and NZPA, 31 July 2007, 11:35am.
Headline: Surface flooding closes South Island roads.
www.radionz.co.nz/news, 30 July 2007, 8:46pm.
Headline: Wind and Rain for South Canterbury, Eastern Otago.
www.scoop.co.nz, Source: MetService, 30 July 2007, 1:06pm.
Headline: Floodwaters recede in Otago.
www.stuff.co.nz, 1 August 2007.
Headline: Heavy rain has southern regions on high alert.
www.stuff.co.nz, Source: NZPA, 30 July 2007.
Headline: Heavy rains abate in Sth Canterbury, Otago.
www.stuff.co.nz, Source: NZPA, 31 July 2007.
Headline: Milton residents begin clean-up as flood waters recede.
www.stuff.co.nz, Source: NZPA, 31 July 2007.
Headline: Milton residents unable to return home coping well: council.
www.stuff.co.nz, Source: Southland Times, 13 August 2007.
Headline: Floodwaters threaten south.
www.stuff.co.nz, Source: Southland Times, 31 July 2007.
Headline: Stewart Island deluge causes floods, slips.
www.stuff.co.nz, Source: Southland Times, 31 July 2007.
Headline: Flooding hits South Canterbury and Otago.
www.stuff.co.nz, Source: The Press, 30 July 2007.
Headline: Heavy rain brings flooding.
www.stuff.co.nz, Source: The Timaru Herald, 31 July 2007.
Headline: Flooding forces Otago families from their homes.
www.tv3.co.nz, 31 July 2007.