愛污传媒

Climate and Environment

    • Dozens of tornado warnings were issued ahead of Hurricane Milton. Is that normal?

    Share

    Before Hurricane Milton made landfall, it produced twisters in southern Florida.

    Wednesday broke a record for the most tornado warnings in a single day in Florida, prompting a question from some: is it normal to see tornadoes during a hurricane?

    , also called tropical cyclones, are tropical storms that initially form over tropical or subtropical waters.

    Tornadoes can occur when hurricanes strike, though it isn鈥檛 easy to predict if and when they will happen, according to a weather expert.

    "It鈥檚 not like a tropical cyclone, which you can predict, sometimes even a week ahead of time," University of Bristol's Dann Mitchell told Reuters. "Tornadoes, we really can't get that level of predictability."

    How tornadoes form 

    Mitchell explained how hurricanes like Hurricane Milton can produce tornadoes.

    "When the tropical cyclone starts hitting land, suddenly winds at the surface slow down a lot, because there's a lot of friction there, there's a lot of buildings in the way, but the winds in the higher levels carry on," said the professor of atmospheric science in a video published Thursday.

    What happens as a result are big changes in wind speed or direction, called , he said.

    "And that's why when you see things hit, then we normally see tornadoes spawn at that point."

    The U.S. National Weather Service says these often occur in thunderstorms away from the centre of the hurricane, in an area that is the most unstable.

    Is it a common phenomenon? 

    In the case of the twisters linked to Hurricane Milton, one scientist said their ferocity was unusual.

    鈥淚t鈥檚 definitely out of the ordinary,鈥 Northern Illinois University meteorology professor Victor Gensini told The Associated Press. 鈥淗urricanes do produce tornadoes, but they鈥檙e usually weak.鈥

    He said Hurricane Milton鈥檚 impact Wednesday was similar to the one seen in the Great Plains, a grasslands region that includes 10 U.S. states, in the spring.

    The central U.S. is an ideal environment for severe thunderstorms that form because the dry, cold air moving south from Canada meets warm, moist air moving north from the Gulf of Mexico, according to the U.S. Center for Science Education.

    Are tornadoes a threat?

    While tornadoes produced by hurricanes are "relatively weak and short-lived," according to the U.S. National Weather Service, they're still considered a "significant threat."

    Tornadoes can cause many deaths, Mitchell said.

    "It's extra bad in this situation because of course, you've got all of the additional impacts of the tropical cyclone hitting at the same time," he said. "And so when that tropical cyclone hits, you have heavy precipitation, often storm surges and flooding. And then if you have tornadoes on top of that, it creates this compound impact on mortality."

    CTVNews.ca Top Stories

    Police have confirmed the body of an employee who died at a Walmart in Halifax over the weekend was found in a walk-in oven.

    At least seven large-scale butter thefts have been reported in Guelph, Ont. over a 10-month period, including two hauls in just the last month.

    Canada

    • A Superior Court justice in Milton has been ordered to participate in coaching from a more senior judge after the Canadian Judicial Council found that his tone was 'abusive and intimidating' during a family court hearing last September.

    • Quebec Premier Francois Legault promised on Tuesday to toughen secularism measures in schools, saying he was 'shocked' by revelations about a Montreal public school where a group of teachers had tried to introduce what the premier described as 'Islamist' beliefs.

    • Police have confirmed the body of an employee who died at a Walmart in Halifax over the weekend was found in a walk-in oven.

    • Former volunteers with Eastern Ontario Cats (EOC) are working to track cats they say are either dead or missing after allegations of abuse, neglect and falsified medical records surfaced in recent months.

    World

    Politics

    Health

    Sci-Tech

    Entertainment

    Business

    Lifestyle

    Sports

    Autos

    Local Spotlight

    Residents of Ottawa's Rideauview neighbourhood say an aggressive wild turkey has become a problem.

    A man who lost his life while trying to rescue people from floodwaters, and a 13-year-old boy who saved his family from a dog attack, are among the Nova Scotians who received a medal for bravery Tuesday.

    A newly minted Winnipegger is hoping a world record attempt will help bring awareness for the need for more pump track facilities in the city.

    A Springfield, Ont. man is being hailed a 'hero' after running into his burning home to save his two infant children.

    Hortense Anglin was the oldest graduate to make her way across the platform at York University's Fall Convocation ceremony this week. At the age of 87, she graduated with an Honours degree in Religious Studies.

    Looking for a scare with good intentions this Halloween season? The ghosts and ghouls of Eganville, Ont. invite families to tour the Haunted Walk at Lekbor Manor.

    The image of a sleepy Saskatchewan small town with 'not a lot going on' is a well-known anecdote. However, one Saskatchewan company is hoping to change that 鈥 and allow communities both on and off the beaten path to share their stories and advertise what they have to offer.

    A Moncton, N.B., home has been donated to the Friends of The Moncton Hospital Foundation and will be transformed into a resource hub for people living with cancer.

    A Nova Scotia man crossing Canada on foot is passing through southwestern Ontario. Trevor Redmond is perhaps better known as the 鈥楩ellow in Yellow.鈥

    • A Vancouver couple who live across the street from McBride Park on the city's west side say they repeatedly told the city a tree on the southern edge of the park posed a danger 鈥 but nothing was done.

    • The search for a man who went missing amid last weekend鈥檚 atmospheric river in Coquitlam, B.C., has entered its third day.

    • Mounties in British Columbia say a second person has been found dead after two vehicles ended up in a river on Vancouver Island when a road washed out amid torrential rains over the weekend.

    • TTC staff are recommending that the transit service ban lithium-ion-powered mobility devices like e-scooters and e-bikes through the winter months due to the risk of fire in adverse conditions such as salty roads.

    • Police have released video footage of a recent home invasion in Richmond Hill as they search for three outstanding suspects who they say may have returned to the residence the following day to take another vehicle.

    • A multi-vehicle collision on the Toronto-bound QEW has shut down all but one lane of traffic during rush hour on Tuesday, says the OPP.

    • A new study suggests the Government of Alberta purposely pushed false narratives around public safety to scale down safe supply in the province.

    • An electrical grid alert was issued throughout Alberta on Tuesday morning as temperatures cooled.

    • Police have identified the victim of a deadly shooting late last week in northeast Calgary.

    • Memorials and tributes are taking place across Ottawa on Tuesday to remember Cpl. Nathan Cirillo, an honour guard stationed at the National War Memorial, killed 10 years ago today.

    • Residents of Ottawa's Rideauview neighbourhood say an aggressive wild turkey has become a problem.

    • Quebec Premier Francois Legault promised on Tuesday to toughen secularism measures in schools, saying he was 'shocked' by revelations about a Montreal public school where a group of teachers had tried to introduce what the premier described as 'Islamist' beliefs.

    • The Quebec government wants to hear Quebecers' thoughts about scrapping the twice-yearly time change, but it isn't promising to act on them.

    • A Montreal borough and Muslim leader are pushing back against the head of the Parti Qu茅b茅cois after he accused a local library of promoting a "religious invasion" by posting a photo of a young girl wearing a hijab for a storytime event.

    • Police are looking for a man and a woman who robbed an Edmonton jewelry store earlier this month.

    • Edmonton Police Service (EPS) is investigating a sudden death in north west Edmonton Tuesday afternoon.

    • A change of usual blueline sides? That's all right with Edmonton Oilers defenceman Darnell Nurse.

    • Police have confirmed the body of an employee who died at a Walmart in Halifax over the weekend was found in a walk-in oven.

    • A member of the Nova Scotia Liberal Party is crossing the floor and joining the Progressive Conservatives.

    • Communities east of Alberta set record high temperatures for an Oct. 21 while Alberta itself contended with the first snowfall of the season in some areas.

    • Folks making the trek to and from Thompson along Highway 6 are once again without a bathroom break鈥 at least for now.

    • The Manitoba government is restoring the 1:1 apprentice-to-journeyperson ratio.

    • A number of Manitoba communities kicked off the week by breaking decades-old heat records.

    • Saskatchewan's Conflict of Interest Commissioner (COIC) has found that former Saskatchewan Party MLA Gary Grewal violated legislative rules by profiting from hotels while they were party to government contracts.

    • Saturday's matchup between the Saskatchewan Roughriders and Calgary Stampeders could determine if they clinch the West Division title, however the results from Winnipeg's game earlier in the day could make their matchup meaningless.

    • Two holes found in the window of a Saskatchewan Party campaign office were not caused by a gun, Regina police have reported.

    • No one was hurt after playground equipment went up in flames at a Kitchener, Ont. park.

    • At least seven large-scale butter thefts have been reported in Guelph, Ont. over a 10-month period, including two hauls in just the last month.

    • Videos of a meteor shower seen across southwestern Ontario have been popping up across social media since Monday night.

    • A Saskatoon family is voicing concerns after paying twice as much PST as expected on a recently purchased truck.

    • Hundreds of voter information cards have landed in the wrong hands.

    • A city planning document for the Bus Rapid Transit system (BRT) sparked controversy over the weekend, with three civic election candidates alleging Confederation Mall was at risk of being demolished and replaced with dense housing.

    • Now that the jury has begun deliberating in the Sudbury murder trial of Felicity Altiman, here are some of the interesting courtroom moments they didn't get to hear.

    • After operating for 51 years, General Motors has announced it is closing the Kapuskasing Proving Ground, a facility the automaker used to test the durability of its vehicles in cold weather.

    • Police have confirmed the body of an employee who died at a Walmart in Halifax over the weekend was found in a walk-in oven.

    • A father and his two children who suffered severe burns in a Springfield, Ont. house fire have undergone surgery.

    • A meteor lit up our region's sky last night 鈥 with a large fireball shooting across the horizon over Lake Erie at around 7:00 p.m.

    • On the stand of a London courthouse on Tuesday, Rachel Johnson described how a fun bush bash birthday party on July 30, 2021 turned deadly.

    • Emergency crews rushed to the scene of a serious collision in Barrie鈥檚 south end involving a passenger vehicle and a motorcycle.

    • Police laid two dozen charges in connection with a month-long investigation into a criminal auto theft enterprise.

    • A fire that caused $2.5 million damage at a newly constructed house in Adjala-Tosorontio early Tuesday morning is being investigated as suspicious.

    • If you live in Windsor, Ont. and get a knock at the door from a political canvasser, it might be surprising since there鈥檚 no election on the horizon at the municipal, provincial or federal level. But across the border, that's not the case.

    • 鈥榁ampire Zombies鈥rom Space!鈥 and 鈥楾hundersnake鈥, two films that are showing at the Windsor International Film Festival (WIFF), were both shot across the city and in the County of Essex.

    • Before the Town of Essex adopts it's new Master Plan for Land Use, staff will work to identify best proper use for future developments across the municipality.

    • Mounties in British Columbia say a second person has been found dead after two vehicles ended up in a river on Vancouver Island when a road washed out amid torrential rains over the weekend.

    • With the B.C. election too close to call, Dr. Bonnie Henry was asked Tuesday how she feels about the possibility of a party that has repeatedly called for her firing forming government.

    • Premier and NDP Leader David Eby says he's been told by the B.C. Green Party that it's too early to begin talks about a minority government agreement after the weekend's still-undecided provincial election.

    • Dave Lindsey began growing giant pumpkins to bring a bit of magic to his grandkids' Halloween.

    • A U.S. District Court judge in Montana has sentenced a 27-year-old man from Kelowna, B.C., to 18 months in prison for using fake names to buy guns with the aim of selling them in Canada.

    • Nearly two years after a man was stabbed to death in downtown Kelowna, RCMP have made an arrest in the case.

    • The health of honeybees will be the focus of a presentation at the University of Lethbridge on Wednesday evening.

    • Alberta is offering infrastructure funding to help municipalities accommodate recent population growth. The province has added a little over 500,000 people over five years, putting pressure on public services.

    • Lethbridge police are advising the public of officer training on Tuesday that will happen in two different venues throughout the day.

    • Rallies by a group called Voices Against Violence took place across the country on Monday, including Sault Ste. Marie.

    • An Indigenous group in northwestern Ontario shut down the highway for a couple of hours Monday morning in protest after ancestral remains were found at a construction site.

    • The owners of 73 vacant properties in the Sault have been fined for violations of the city's vacant properties bylaw, including 33 owned by a firm going through a high-profile insolvency process.

    N.L.

    Shopping Trends

    The Shopping Trends team is independent of the journalists at 愛污传媒. We may earn a commission when you use our links to shop.聽Read about us.

    Stay Connected
    Follow 愛污传媒