AusAlert test will blast emergency warning siren over most phones in Australia on Monday. Here’s what to know

National emergency test alert will be sent to all mobile devices on 27 July, with domestic violence advocates advising how to turn off safe phones

Virtually every phone in the country will blare an emergency siren at 2pm AEST on Monday 27 July as part of the first Australia-wide test of a new national warning system called AusAlert.

Most phones, and some smartwatches and tablets, will receive a pop-up notification and an alert sound that cannot be silenced – even if your device is on “do not disturb” or silent mode.

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Millions face long-term coastal flooding risk in UK without climate action, scientists warn

A ‘reasonable worst-case scenario’ suggests need for large-scale movement of populations away from reshaped coast

Up to 13 million people in the UK face the long-term risk of coastal flooding due to the climate crisis, scientists have warned, with a “reasonable worst-case scenario” suggesting the need for the large-scale movement of populations away from a dramatically reshaped coast.

Even if today’s global pledges to cut carbon pollution are met, about 1.4 million more people will be exposed to coastal floods in 2200 and 1.7 million in 2300 due to the sea level rise driven by melting ice caps and warming oceans.

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Five family members found dead after flash flood in Utah canyon, police say

Victims were Provo’s fire captain, his wife and their three sons, who were hiking in Bicknell amid heavy rains

Five family members who had set out for a day of hiking were killed after a flash flood swept through canyons of southern Utah on Friday, law enforcement officials said.

The victims were a captain in the Provo fire department, his wife and their sons, according to fire officials. A daughter who was not on the trip survived.

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Flash flood warnings strike north-east US amid wildfire smoke from Canada

Poor air quality from wildfires continues to plague New York City as several neighborhoods hit by thunderstorms

Saturday is delivering a double dose of dangerous weather across the north-eastern US, with smoky skies from Canadian wildfires giving way to severe thunderstorms that have already triggered a flash flood warning as torrential rain pounds parts of the region.

After a brief break on Friday, smoke from the wildfires moved back into New York City and surrounding communities on Saturday, sending air quality back into unhealthy levels.

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How global heating supercharged floods in West Africa, displacing thousands

Adaptation to frightening new normal and reducing emissions further and faster is critical, scientists warn

Dozens of people drowned, hundreds had to be rescued and thousands were displaced when floods struck the coasts of west Africa last month.

Now scientists have concluded that the rains that caused the floods were supercharged by climate breakdown. Global heating, they say, turned what should have been a routine weather event into a climate catastrophe.

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Côte d’Ivoire floods kill 59 as west Africa endures torrential rains

Authorities say rainy season getting deadlier, with Ghana reporting 13 dead and floods hitting Benin, Togo and Nigeria

Floods in Côte d’Ivoire have killed 59 people since May, the communication minister told a cabinet meeting in Abidjan.

There are fears the toll could further rise as rescue teams continue to search for victims during the rainy season, which runs from May until July, the minister, Amadou Coulibaly, added.

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Four people have died from flash floods in Kentucky, governor says

Floods caused by thunderstorms that have dumped inches of rain on Kentucky and Indiana, with more possible

Andy Beshear, the Kentucky governor, says four people have died as a result of flash floods from thunderstorms that have brought as much as 7in (18cm) of rain to the state.

Beshear confirmed the four deaths in a social media post, noting three people were from Madison county and one was from Jackson county. “Please join Britainy and me as we pray for their families during this difficult time,” Beshear said.

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Trump targeting immigrants from countries hit most by climate shocks

A Guardian analysis reveals how most of 39 countries facing US entry restrictions are most vulnerable environmentally

Donald Trump’s immigration crackdown is largely targeting people from the countries most vulnerable to displacement from climate-driven disasters, a Guardian analysis shows.

As the Trump administration pushes policies to boost planet-heating fossil fuels, millions of people are being forced to flee their homelands due to storms, floods and droughts worsened by the climate crisis.

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Hawaii assesses damage left by worst flooding in more than 20 years

People evacuated on Oahu and Maui as rains lifted houses and cars, swept through stores and left streets mud-clogged

Hawaii is assessing the extensive damage left by the worst flooding the islands have seen in more than 20 years.

Heavy rains and floodwater forced thousands on the North Shore of Oahu to evacuate over the weekend and triggered evacuation orders for parts of Maui. Floodwater from rains lifted houses and cars, inundated farms and swept through grocery stores on the islands, leaving behind a thick layer of mud.

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Ex-Tropical Cyclone Narelle to intensify with Perth a possible target as storm makes rare crossing across continent

Narelle weakens to a tropical low after bringing heavy rain to already-saturated parts of the Northern Territory

Communities in Australia’s far north were again on flood alert as ex-Tropical Cyclone Narelle continued its destructive westward journey on Monday, with forecasts suggesting the system could re-intensify and potentially threaten the Perth region this weekend.

Narelle had weakened to a tropical low system on Monday after bringing heavy rain to already-saturated parts of the Northern Territory over the weekend.

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Thousands ordered to evacuate as Hawaii hit by severe flash floods

Officials warn some residents could be trapped by rising waters as Wahiawā dam on Oahu ‘may collapse at any time’

Towering flash floods and an imminent dam failure in the northern part of Oahu triggered evacuation warnings in Hawaii on Friday, as the state continued contending with a powerful storm this week.

The waters came on quickly in the middle of the night, and videos on social media captured inundated streets and cars being swallowed by the muddy floodwaters.

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‘A devastating force’: how recent Mediterranean storms turned to tragedies

Atmospheric machine-gun has fired storm after deadly storm at the region this year, leaving a trail of widespread destruction

For Andrés Sánchez Barea, in Spain, it was the fear that arose when water started to spurt from plug sockets. For Nelson Duarte, in Portugal, it was the helplessness that hit as violent winds smacked down trees and tore tiles from roofs. For Amal Essuide, in Morocco, it was the reality that dawned when a corpse was pulled onboard a boat in the flooded medina.

Each moment of horror is a fragment of the destruction wrought by an atmospheric machine-gun that in recent weeks has fired storm after storm at the western Mediterranean. Scientists do not know if climate breakdown helped pull the trigger, but research suggests it loaded the chamber with bigger bullets.

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Floods and landslides in Brazil kill at least 30 after record rainfall

Firefighters search for 39 people missing in debris after river burst and houses were swept away

Three firefighters pulled a man’s body from the mud amid the rubble of houses swept away in a landslide in south-eastern Brazil, where 30 people died and 39 were still missing on Tuesday after torrential rains.

A river in the state of Minas Gerais burst its banks and streets became raging currents of brown water after an overnight downpour in a region that has seen record rain this month.

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Under water, in denial: is Europe drowning out the climate crisis?

Even as weather extremes worsen, the voices calling for the rolling back of environmental rules have grown louder and more influential

In the timeless week between Christmas and the new year, two Spanish men in their early 50s – friends since childhood, popular around town – went to a restaurant and did not come home.

Francisco Zea Bravo, a maths teacher active in a book club and rock band, and Antonio Morales Serrano, the owner of a popular cafe and ice-cream parlour, had gone to eat with friends in Málaga on Saturday 27 December. But as the pair drove back to Alhaurín el Grande that night, heavy rains turned the usually tranquil Fahala River into what the mayor would later call an “uncontrollable torrent”. Police found their van overturned the next day. Their bodies followed after an agonising search.

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New Zealand officials warn more flooding could hit north island as man killed after heavy rain

Worst weather forecast to hit late on Sunday, a day after floods caused power outages, road collapses and home evacuations

New Zealand’s weather bureau has warned more flooding could hit the country’s North Island, a day after floods caused power outages, road collapses, home evacuations and caused the death of a man whose vehicle was submerged on a highway.

There was “threat to life from dangerous river conditions, significant flooding and slips” as a deepening low-pressure system east of the North Island brought heavy rain and severe gales to several regions, the weather bureau said.

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Global heating and other human activity are making Asia’s floods more lethal

Much improved response systems are struggling to cope with ever more powerful and destructive storms

Families stranded on their rooftops. Homes buried by fast-flowing mud. Jagged brown craters scarring lush green hillsides.

The scenes are the result of a series of cyclones and storms in a heavy monsoon season that have struck Asia with torrential rains, gutting essential infrastructure and reshaping landscapes. The violent weather has killed at least 1,200 people in the past week and forced a million to flee without knowing whether their homes will still be standing when they go back.

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British women stranded by landslides in Sri Lankan mountains running out of food and water, daughter says

Friends Melanie Watters and Janine Reid have been trapped in Pussellawa since Thursday

Two British women stranded by landslides in Sri Lanka’s tea mountains are running out of food and water, the daughter of one of them has said, as officials reported that the death toll of Cyclone Ditwah has reached 465.

Melanie Watters, 54, and her friend Janine Reid, 55, both from London, were being driven through the mountains from Kandy in central Sri Lanka on Thursday when the road in front of them was swamped, sending a bus nearby over a cliff-edge.

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‘We have to rebuild from scratch’: Sri Lankans relive the devastation of Cyclone Ditwah

Many uncertain about the future after losing everything in the country’s deadliest natural disaster for years

When the rains began, Layani Rasika Niroshani was not worried. The 36-year-old mother of two was used to the heavy monsoon showers that drench Sri Lanka’s hilly central region of Badulla every year. But as it kept pounding down without stopping, the family started to feel jittery.

Some relocated to a relative’s house, but her brother and his wife decided to stay behind to collect the valuables. As they were inside, a landslide hit the family home.

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Death toll passes 900 in Indonesia, Thailand and Sri Lanka floods

Officials in Indonesia say more than 442 people have died, while Sri Lanka suffers worst natural disaster since 2004 tsunami

Authorities in Sri Lanka, Indonesia and Thailand are racing to clear debris and find hundreds of missing people after more than 900 died in devastating floods and landslides across the south of Asia.

In the latest example of the impact of the climate crisis on storm patterns and extreme weather, heavy monsoon rains, exacerbated by a tropical storm, have overwhelmed parts of south-east Asia in recent days, leaving thousands of people stranded without shelter or critical supplies.

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Sri Lanka’s capital hit by floods as cyclone death toll nears 200

Hundreds of people still missing after heavy rain and mudslides in country’s deadliest natural disaster for years

Entire areas of Sri Lanka’s capital are flooded after a powerful cyclone triggered heavy rains and mudslides across the island, with authorities reporting nearly 200 dead and dozens more missing.

Officials said the extent of the damage in the country’s worst-affected central region was slowly becoming clear on Sunday as relief workers cleared roads blocked by fallen trees and mudslides.

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