The rain was relieved in Dunedin and "the city fell out of OK," but the flood floods are still widespread.
Overnight forecast for the area is for a low level of rain, which should help recede flood waters.
Dunedin's mayor, Dave Cull, said the council and civilian defense staff would remain "vigilant" tonight before it cleans up in the morning.
Is it flooded with you? Send pictures and videos to [email protected]
"The big breaks that were predicted were about the fourth morning and began to release, and we expect things to continue improving, probably around some rivers."
* The snow falls to 400 m overnight, as the strong southern cold passes to the South Island
* MetService: Terms suitable for Canterbury Twister 100 m high
* The Tornado will hit Mid Canterbury, after the day of wild weather
The Taieri River continued to rise, Cull said. The inhabitants of Middlemarch and Henley were particularly affected by the floods.
"There will be a few people who are a little uncomfortable, they have to leave their homes, but overall the city has fallen out of OK."
It was not necessary to declare a state of emergency, Cull said. However, he expressed some concerns about the city's ability to cope with how natural weather events become more common.
HAMISH MCNEILLY / STUFF
Sandbagging in southern Dunedin, after flooding leaves the city flooded
"It is obvious that our infrastructure was not designed for this intensity, but the volume if spread over time is manageable."
BALANCE, STARTED ROUTES
The inhabitants of Dunedin were constantly urged to stay on roads where possible in the city and the Taierian Plain.
Previously, one person was freed from the car after being stuck in the floods near Kaitangata in southern Otago. The police were warned around 4pm near the Lakeside and Stations Rd, Lovells Flat, between Balcluth and Kaitangata. The man was under the railroad crossing when he got into trouble. He was saved without injuries.
Most motorways were open on Tuesday afternoon, but there were many warnings, a spokeswoman for the NZ Transport Agency said. One route to the southern island was closed on Tuesday afternoon – State Route 90 from Raes Junction to Tapanui – because part of the road fell. SH8 from Roxburg to Millers Flat was closed in the morning due to floods, but reopened around noon.
State Highway 1 south of Milton was not closed on Tuesday afternoon, as the police had originally recommended, but only four-wheel-drive cars were closed for a four-wheel-drive car because of the massive flooding between Milton and Balcluth. There have been warnings for other Otago highways due to slippage, strong wind or surface water.
HAMISH MCNEILLY / STUFF
Strong rain causes surface floods and water system problems around Dunedin on Tuesday.
Dunedin City Council Civil Advocate Sandy Graham said that the widespread surface flood was still present throughout the city overnight on Tuesday and people should avoid non-essential travel.
"Not all floods are marked. If you need to drive, try to reduce the speed of flooded areas so the water is not pushed into the property."
Henley's residents were knocked by the police and advised to evacuate when the rain fell. Meanwhile, all residents of Dunedin have been urged to restrict the showers and the use of washing machines because the continued rain has put pressure on the sewage pipeline and the gas station around the city with water.
Mosgiel and the inhabitants of southern Dunedin were afraid of floods or had trouble overnight from various locations, including the Memorial Park and the Taieri, Mosgiel and Ice Stadium, Dunedin.
Three streets in Middlemarch, Otago, were previously closed due to the increase in waste water. The pump was used to provide additional capacity while the area was hit by heavy rain, said Dunedin City Council spokesman.
BEST DAY OF THE MONTH
MetService Meteorologist Andrew James said Dunedin had experienced his most sad day of the month with a fall of 47.7 millimeters of rain, with a peak hourly total of 10.6 millimeters.
"When we talk about heavy rain, it's about 6.5 mm per hour, so today it was really wet for Dunedin," James said.
Low pressure north of Dunedin is moving away, but it is expected to remain windy overnight, especially offshore.
Parts of the southern island were submerged back into the winter, with closed roads and snow warnings.
The Otago Regional Council opened the Riverside Revolutionary Gate on the Taieri River at Outramon on Tuesday afternoon diverting water into the ponding area that is part of the Lower Taieri Flood Protection Scheme to reduce the effects of floods on the properties further down the Henley River.
Director of Science, Danger and Engineering, Dr. Gavin Palmer, said river levels are still being watched around Otago. "There is currently no escape from Silver Stream, which is positive, and we will look at it, because even if it's dropped, it's sensitive to rainfall.
"We also monitor the Mill Creek pumping station, which was under pressure during the flood in 2017, and brought additional materials to stabilize it if necessary, although we do not expect any problems," Palmer said.
Dunedin rivers are also monitored, especially Water of Leith near Leith Street Central, and Lindsay Creek at the North Road.
SOUTH FARMING, SNOW IN CANTERBURY
In the south, some schools were closed in northern Southland and in the west and south of Otago. The Blue College in Tapanui remained open, but the pupils sitting on the public exam were warned only to go to school if they could be safe.
The New Zealand Qualification Office (NZQA) says that students who are not eligible to participate in their tests will not be disadvantaged.
More than 30,000 students across the country have scheduled exams on Wednesday. Derived stamps will be offered to students who will not be tested for floods, snow or road closures.
"Students spend many hours preparing for the exams, so we're trying to ensure that test centers are open if students can get there safely," said Deputy CEO Grant Klinkum, NZQA.
On Tuesday night, the Bruce Civil Defense Team in Milton played a waiting game after the storm caused isolated flooding across the southern city of Otago.
Milton's Volunteer Brigadier Military Volunteer and Warren Tait said that "when the situation worsened, there were about five calls when the situation worsened.
On the main street, the Tokomairiro Community Hub was prone to flooding and bagged and closed. Civilian team member Jill McIntosh said the cloud of the Clutha District Council had a steady stream of people asking for sandbags and announcing that their toilets were backing up.
Team Coordinator Allan Philips said he would assess flood and flood levels on Tuesday night and Wednesday morning. Emergency centers have been set up and remain open in Balcluth and Lawrence until the situation is reassessed.
The Southland Environment has previously activated flood warnings, and the Clutha County Council has warned users of Tuapeka West, Glenkenich and North Richardson water systems to breathe water until further warnings due to heavy rain and floods.
Earlier in the day, around Tuesday afternoon, much of the rain was concentrated on Canterbury. MetService also received a good snow report in the morning from Castle Hill Village, inland from Christchurch on the west side of Porters Pass. There were also snow reports from Ranfurly and Roxburgh in central Otago.
MetService Meteorological Station Lisa Murray says that in the east of the country lies south of Banks peninsula. "It's clockwise around the bottom, so the coastal flow to the lower half of the southern island is either south-east or south, and that's why it's quite cold."
In Le Bons Bay on the Banks peninsula, the temperature at noon fell to 4.3 degrees Celsius, while the area was calmed down by the cold southwestern wind. At midnight to midday, Methven recorded 32.8 mm of rain, Timaru Airport had 22.6 mm, Mt Cook Village had about 20 mm and Ashburton had 18.8 mm, said Murray.
THUNDER, WATERSPOUTS FOR NORTHERN ISLAND
North storms occurred in Northland, Auckland and northern Waikato.
Water stains and lightning have also been seen off the coast of Auckland near Torbay on the North Coast. Thunder was expected to continue "shutdown" by Wednesday.
Auckland sees an extended (2 day) spell of heavy showers, hailstorms and thunderstorms. This is unusual for us – and some localized short-term rains will be relatively intense, especially to the west. Keep what's on standby and look at the radar at https://t.co/7k3nmdWQwx ^ GG pic.twitter.com/SYYB0XY5P2
– MetService (@MetService) 19 November 2018
Weather conditions in Canterbury and Upper Northern Island were interconnected, although onshore streams came from somewhat different systems, Murray said.
"The rain in Canterbury has extra moisture due to the coastal flow. Like in Auckland, the wind is somewhat northwest and brings warm moist air to the surface.
"Even though they get into the wind from different directions, we have a large cold-air pool that gives instability … that big cold air over New Zealand gives a kick."
IS REDUCED SNOW IN NOVEMBR?
The MetService Meteorological Station, Claire Flynn, said that since 1990, a heavy snow warning has been issued five times in November, so when it was not common, it happened once every six years.
This week is snow, wind and rain caused by a combination of high south of the south island and slowly moving low to the west, she said.
"With this high seating south, it just makes the southeast winds off the coast of Otago and Canterbury, keeps the weather wet and drifts at the higher altitudes."
The High also maintained a low diversion to the exit as fast as usual, Flynn said.
"With the high south, the wind pushes between the high and the low, so the wind is strong around the southern parts of the southern island."