NZ Historic Weather Events Catalogue
July 2020 Upper North Island Flooding ( 2020-07-15 )
Over the period 15-19 July there were heavy rainfalls and subsequent flooding in some northern parts of the North Island. During this period was a deep slow-moving low in the North Tasman Sea, and persistent high pressure over and to the south of the South Island. There were several outbreaks of very heavy rain in the north of the North Island with some areas experiencing significant flooding, especially parts of Northland.
North Island
Flooding
at
North Island
Insurance claims totalled $44.19 million.
MetService SEVERE WEATHER WARNING 8:40 pm Wednesday 15-Jul-2020. Heavy rain and easterly gales for the upper North Island. A strong, moist easterly airstream, ahead of a deep low over the Tasman Sea, is forecast to bring rain and easterly gales to the upper North Island through tonight (Wednesday) until early Friday morning.
MetService SEVERE WEATHER WARNING SEVERE WEATHER WARNING 8:18 pm Thursday 16-Jul-2020. Heavy rain and easterly gales for the northeast of the North Island. A deep low over the Tasman Sea directs a strong, moist easterly airstream over the North Island, bringing rain or showers to many places tonight and Friday.
MetService SEVERE WEATHER WARNING SEVERE WEATHER WARNING 7:32 pm Friday 17-Jul-2020. Heavy rain for Northland and Gisborne. A deep low over the Tasman Sea directs a strong, moist easterly airstream over the North Island, bringing rain or showers to many places.
MetService SEVERE WEATHER WARNING SEVERE WEATHER WARNING at 9:27 am Saturday 18-Jul-2020. Heavy rain for the ranges of Hawkes Bay. A deep low over the Tasman Sea directs a moist easterly airstream over the North Island, bringing rain or showers to many places. Please note, for Northland, localised downpours and thunderstorms are still possible during today and Sunday, but the threat of widespread heavy rain has passed and the Warning is now lifted.
Northland
Multi Hazard
at
Northland
Welfare centres were set up at Kamo and Onerahi in Whangarei,, and in Kawakawa and Moerewa. About 30 households evacuated their homes, as more than 220 mm of rain fell in the district in 10 hours.
The Far North District Council reported flooding, slips and fallen trees throughout the region. Numerous key roads, including State Highways, were affected by flash flooding.
Residents in Whangarei and Paihia were asked to conserve water, as flooding had closed two water treatment plants.
Some Northland residents may have to wait six months before they can move back into their home..
Heavy Rain
at
Whangarei
Whangarei recorded 220 mm of rain on 18 July.
Waikato
Multi Hazard
at
Coromandel Peninsula
About 100 households lost power during the storm.
Three sections of SH25 were closed due to slips and flooding.
It was estimated that 50% of the Coromandel was inaccessible due to flooding and slips.
Fire and Emergency NZ attended 16 callouts, mainly for trees blown down and roof damage.>
Many farmers in the area had slips on their land, silt-covered paddocks, blocked culverts and damaged fences.
Flooding
at
Hikuai
Floods cut off the settlement of Hikuai. Stranded travellers were evacuated in a Surf Life Saving rescue boat.
The Hikuwai River in the Uawa catchment peaked at 12.25 metres, making it the highest flood level since 2005, and the third highest flow on record in 45 years.
Gisborne
Heavy Rain
at
Tolaga_Bay
Heavy rain caused slips north of Tolaga Bay, restricting access on East Cape Road.
SH35 was closed between Tolaga Bay and Ruatoria, due to slips and flooding.
At least three homes north of Tolaga Bay were evacuated.
References
- Insurance Council of New Zealand (https://www.icnz.org.nz/natural-disasters/cost-of-natural-disasters/)
- Meteorological Society of New Zealand (Inc.), Newsletter 162, Spring 2020.
- Meteorological Society of New Zealand (Inc.)
- Headline: People urged to stay off roads as Coromandel ‘battered’.
- www.radionz.co.nz, 16 July 2020.
- Headline: Wild weather: ’50 percent of Coromandel inaccessible’ – Civil defence.
- www.radionz.co.nz, 17 July 2020.
- Headline: Numerous roads in Northland closed as region hit by heavy rain, thunderstorms.
- www.radionz.co.nz, 17 July 2020.
- Headline: Whangarei gets 220 millimetres of rain overnight, MetService says.
- www.radionz.co.nz, 18 July 2020.
- Headline: Whangarei floods:Tow truck helps travellers, sewers leaking.
- www.radionz.co.nz, 18 July 2020.
- Headline: Some flooded Northlanders homes unliveable for months.
- www.radionz.co.nz, 24 July 2020.
July 2020 Upper North Island Flooding ( 2020-07-15 )
Over the period 15-19 July there were heavy rainfalls and subsequent flooding in some northern parts of the North Island. During this period was a deep slow-moving low in the North Tasman Sea, and persistent high pressure over and to the south of the South Island. There were several outbreaks of very heavy rain in the north of the North Island with some areas experiencing significant flooding, especially parts of Northland.
North Island
Flooding
at
North Island
Insurance claims totalled $44.19 million.
MetService SEVERE WEATHER WARNING 8:40 pm Wednesday 15-Jul-2020. Heavy rain and easterly gales for the upper North Island. A strong, moist easterly airstream, ahead of a deep low over the Tasman Sea, is forecast to bring rain and easterly gales to the upper North Island through tonight (Wednesday) until early Friday morning.
MetService SEVERE WEATHER WARNING SEVERE WEATHER WARNING 8:18 pm Thursday 16-Jul-2020. Heavy rain and easterly gales for the northeast of the North Island. A deep low over the Tasman Sea directs a strong, moist easterly airstream over the North Island, bringing rain or showers to many places tonight and Friday.
MetService SEVERE WEATHER WARNING SEVERE WEATHER WARNING 7:32 pm Friday 17-Jul-2020. Heavy rain for Northland and Gisborne. A deep low over the Tasman Sea directs a strong, moist easterly airstream over the North Island, bringing rain or showers to many places.
MetService SEVERE WEATHER WARNING SEVERE WEATHER WARNING at 9:27 am Saturday 18-Jul-2020. Heavy rain for the ranges of Hawkes Bay. A deep low over the Tasman Sea directs a moist easterly airstream over the North Island, bringing rain or showers to many places. Please note, for Northland, localised downpours and thunderstorms are still possible during today and Sunday, but the threat of widespread heavy rain has passed and the Warning is now lifted.
Northland
Multi Hazard
at
Northland
Welfare centres were set up at Kamo and Onerahi in Whangarei,, and in Kawakawa and Moerewa. About 30 households evacuated their homes, as more than 220 mm of rain fell in the district in 10 hours.
The Far North District Council reported flooding, slips and fallen trees throughout the region. Numerous key roads, including State Highways, were affected by flash flooding.
Residents in Whangarei and Paihia were asked to conserve water, as flooding had closed two water treatment plants.
Some Northland residents may have to wait six months before they can move back into their home..
Heavy Rain
at
Whangarei
Whangarei recorded 220 mm of rain on 18 July.
Waikato
Multi Hazard
at
Coromandel Peninsula
About 100 households lost power during the storm.
Three sections of SH25 were closed due to slips and flooding.
It was estimated that 50% of the Coromandel was inaccessible due to flooding and slips.
Fire and Emergency NZ attended 16 callouts, mainly for trees blown down and roof damage.>
Many farmers in the area had slips on their land, silt-covered paddocks, blocked culverts and damaged fences.
Flooding
at
Hikuai
Floods cut off the settlement of Hikuai. Stranded travellers were evacuated in a Surf Life Saving rescue boat.
The Hikuwai River in the Uawa catchment peaked at 12.25 metres, making it the highest flood level since 2005, and the third highest flow on record in 45 years.
Gisborne
Heavy Rain
at
Tolaga_Bay
Heavy rain caused slips north of Tolaga Bay, restricting access on East Cape Road.
SH35 was closed between Tolaga Bay and Ruatoria, due to slips and flooding.
At least three homes north of Tolaga Bay were evacuated.
References
- Insurance Council of New Zealand (https://www.icnz.org.nz/natural-disasters/cost-of-natural-disasters/)
- Meteorological Society of New Zealand (Inc.), Newsletter 162, Spring 2020.
- Meteorological Society of New Zealand (Inc.)
- Headline: People urged to stay off roads as Coromandel ‘battered’.
- www.radionz.co.nz, 16 July 2020.
- Headline: Wild weather: ’50 percent of Coromandel inaccessible’ – Civil defence.
- www.radionz.co.nz, 17 July 2020.
- Headline: Numerous roads in Northland closed as region hit by heavy rain, thunderstorms.
- www.radionz.co.nz, 17 July 2020.
- Headline: Whangarei gets 220 millimetres of rain overnight, MetService says.
- www.radionz.co.nz, 18 July 2020.
- Headline: Whangarei floods:Tow truck helps travellers, sewers leaking.
- www.radionz.co.nz, 18 July 2020.
- Headline: Some flooded Northlanders homes unliveable for months.
- www.radionz.co.nz, 24 July 2020.