Flooding Forecast to Worsen in Brazil’s Poor South

People wait to be rescued by a Brazilian Army helicopter during an operation in conjunction with firefighters to rescue people trapped in their homes due to a flood, in Canoas, Porto Alegre, Brazil, 04 May 2024. EPA/Isaac Fontana
People wait to be rescued by a Brazilian Army helicopter during an operation in conjunction with firefighters to rescue people trapped in their homes due to a flood, in Canoas, Porto Alegre, Brazil, 04 May 2024. EPA/Isaac Fontana
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Flooding Forecast to Worsen in Brazil’s Poor South

People wait to be rescued by a Brazilian Army helicopter during an operation in conjunction with firefighters to rescue people trapped in their homes due to a flood, in Canoas, Porto Alegre, Brazil, 04 May 2024. EPA/Isaac Fontana
People wait to be rescued by a Brazilian Army helicopter during an operation in conjunction with firefighters to rescue people trapped in their homes due to a flood, in Canoas, Porto Alegre, Brazil, 04 May 2024. EPA/Isaac Fontana

More heavy rain is forecast for Brazil’s already flooded Rio Grande do Sul state, where many of those remaining are poor people with limited ability to move to less dangerous areas.

More than 15 centimeters (nearly 6 inches) of rain could fall over the weekend and will probably worsen flooding, according to the latest bulletin from Brazil’s national meteorology institute. It said there is also a high likelihood that winds will intensify and water levels rise in the Patos lagoon next to the state capital, Porto Alegre, and the surrounding area.

As of Saturday morning, heavy rains were falling in northern Rio Grande do Sul, while Porto Alegre and the southern part of the state were receiving drizzle.

Carlos Sampaio, 62, lives in a low-income community next to soccer club Gremio’s stadium in Porto Alegre. His two-story home doubles as a sports bar.

Even though the first floor is flooded, he said he won't leave, partly out of fear of looters in his high-crime neighborhood, where police carry assault rifles as they patrol its flooded streets. But Sampaio also has nowhere else to go, he told The Associated Press.

“I am analyzing how safe I am, and I know that my belongings aren't safe at all,” Sampaio said. “As long as I can fight for what is mine, within my abilities to not leave myself exposed, I will fight.”

At least 136 people have died in the floods since they began last week, and 125 more are missing, local authorities said Friday. The number of people displaced from their homes due to the torrential rains has surpassed 400,000, of whom 70,000 are sheltering in gyms, schools and other temporary locations.

“I came here on Monday — lost my apartment to the flood," Matheus Vicari, a 32-year-old Uber driver, said inside a shelter where he is staying with his young son. "I don’t spent a lot of time here. I try to be out to think about something else.”

Some residents of Rio Grande do Sul state have found sanctuary at second homes, including Alexandra Zanela, who co-owns a content agency in Porto Alegre.

Zanela and her partner volunteered when the floods began, but chose to move out after frequent electricity and water cuts. She headed to the beachfront city of Capao da Canoa — so far unaffected by flooding — where her partner’s family owns a summer home.

“We took a ride with my sister-in-law, took our two cats, my mother and a friend of hers and came here safely. We left the Porto Alegre chaos,” Zanela, 42, told the AP by phone. “It is very clear that those who have the privilege to leave are in a much safer position, and those living in the poorer areas of Porto Alegre have no option.”

In Brazil, the poor often live in houses built from less resilient materials such as wood and in unregulated areas more vulnerable to damage from extreme weather, such as low-lying areas or on steep hillsides.

“We cannot say that the worst is over,” Rio Grande do Sul Gov. Eduardo Leite said on social media Friday. The day before, he estimated that 19 billion reais ($3.7 billion) will be needed to rebuild the state.

The scale of devastation may be most comparable to Hurricane Katrina that hit New Orleans, Louisiana, in 2005, Sergio Vale, chief economist at MB Associates, wrote in a note Friday.

Rio Grande do Sul has the sixth highest GDP per capita among Brazil's 26 states and the federal district, according to the national statistics institute. Many of the statel's inhabitants descend from Italian and German immigrants.

“In the popular imagination, the population of Rio Grande do Sul is seen as white and well-off, but this is not the reality,” said Marília Closs, a researcher at the CIPO Platform, a climate think tank. “It’s very important to dispel this fiction, because it’s constructed with a political objective” to erase Black and poor residents, she said.

In Canoas, one of the hardest-hit cities in the state, Paulo Cezar Wolf’s small wooden house has been fully submerged, along with all his belongings. A truck driver, the Black man now lives in the back of a loaned truck with six of his neighbors, who all cook, eat and sleep there.

Wolf, 54, has considered leaving the rural region, where he has lived since childhood, but has nowhere else to go and doesn’t want to leave behind his four adult children.

“It is too late for someone like me to move somewhere else,” Wolf said, wearing a donated sweatshirt as he stood on a highway.

The meteorology institute predicts the arrival of a mass of cold and dry air will reduce the chance of rain beginning Monday. But it also means temperatures are set to drop sharply, to around freezing by Wednesday. That makes hypothermia a concern for those who are wet and lacking electricity.

Celebrities, among them supermodel Gisele Bündchen and pop star Anitta, have been sharing links and information about where and how to donate to help flood victims. Churches, businesses, schools and ordinary citizens around the country have been rallying to provide support.

The UN refugee agency is distributing blankets and mattresses. It is sending additional items, such as emergency shelters, kitchen sets, blankets, solar lamps and hygiene kits, from its stockpiles in northern Brazil and elsewhere in the region.

On Thursday, Brazil’s federal government announced a package of 50.9 billion reais ($10 billion) for employees, beneficiaries of social programs, the state and municipalities, companies and rural producers in Rio Grande do Sul.

The same day, the Brazilian air force parachuted over two tons of food and water to areas that are inaccessible due to blocked roads. The navy has sent three vessels to help those affected, among them the Atlantic Multipurpose Aircraft Ship, which it said is considered the largest warship in Latin America. It arrived on the state's coast Saturday.

The US has sent $20,000 for personal hygiene kits and cleaning supplies and will be providing an additional $100,000 in humanitarian assistance through existing regional programs, White House national security spokesman John Kirby said Friday.

Weather across South America is affected by the El Niño climate phenomenon, a naturally occurring event that periodically warms surface waters in the equatorial Pacific. In Brazil, El Niño has historically caused droughts in the north and intense rainfall in the south, and this year the effects have been particularly severe.

Scientists say extreme weather is happening more frequently due to climate change, caused by the burning of fossil fuels that emit planet-warming greenhouse gas emissions, and overwhelmingly agree the world needs to drastically cut the burning of coal, oil and gas to limit global warming.

But there is a need for social policy responses, too, said Natalie Unterstell, president of Talanoa Institute, a Rio de Janeiro-based climate policy think tank.

“Providing an effective response to climate change in Brazil requires us to combat inequalities,” Unterstell said.



From Deluges to Drought: Climate Change Speeds up Water Cycle, Triggers More Extreme Weather

People walk through a part of the Amazon River that shows signs of drought, in Santa Sofia, on the outskirts of Leticia, Colombia, Oct. 20, 2024. (AP)
People walk through a part of the Amazon River that shows signs of drought, in Santa Sofia, on the outskirts of Leticia, Colombia, Oct. 20, 2024. (AP)
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From Deluges to Drought: Climate Change Speeds up Water Cycle, Triggers More Extreme Weather

People walk through a part of the Amazon River that shows signs of drought, in Santa Sofia, on the outskirts of Leticia, Colombia, Oct. 20, 2024. (AP)
People walk through a part of the Amazon River that shows signs of drought, in Santa Sofia, on the outskirts of Leticia, Colombia, Oct. 20, 2024. (AP)

Prolonged droughts, wildfires and water shortages. Torrential downpours that overwhelm dams and cause catastrophic flooding.

Around the globe, rising temperatures stoked by climate change are increasing the odds of both severe drought and heavier precipitation that wreak havoc on people and the environment.

Rainfall can disappear for years only to return with a vengeance, as it did in California in 2023, with record-setting rain and snowfall. That led to heavy vegetation growth that provided fuel for the devastating January wildfires in Los Angeles after drought returned.

But how can global warming cause both drier and wetter extremes? Here's what experts say:

It's all about the water cycle

Water constantly moves between the Earth and its atmosphere. But that system — called the hydrological cycle — is speeding up as global temperatures get hotter, primarily due to the burning of fossil fuels like coal and gas.

A hotter atmosphere sucks up more water vapor from bodies of water and vegetation and soil.

Over land, this atmospheric demand and loss of surface moisture leads to longer and more intense droughts, even causing some arid areas to expand. Though rain falls less often, when it does, it's often in intense and destructive deluges.

That's because the atmosphere holds 7% more water vapor for every degree Celsius.

“Basically, global warming is turning the atmosphere into a bigger sponge so it can soak up more moisture ... and then when the conditions are right for rainfall, it’s like squeezing that sponge,” said Jonathan Overpeck, a climate scientist at the University of Michigan. "You get more moisture coming out faster."

Oceans play outsized role

Oceans absorb most of the planet’s extra heat. That causes the water to expand and ice to melt at the poles, raising sea levels. The warmer water also provides fuel for larger hurricanes and cyclones that can dump massive amounts of water in a short time.

In 2023, for example, heavy one-day rains from Mediterranean storm Daniel caused massive flooding across eastern Libya that overwhelmed two dams, sending a wall of water through the coastal city of Derna that destroyed entire neighborhoods and swept bridges, cars and people out to sea. Climate scientists say climate change made that storm far more likely.

Snowpack is diminishing

Climate change also is affecting snowpack, a critical part of the hydrological cycle.

Melting snow helps fill reservoirs and waterways, including for drinking and agriculture. But less snow is falling in general, and what does often is absorbed by thirsty soil.

What's more, because winters are becoming warmer overall, the growing season is longer, meaning snowmelt also is being lost through evapotranspiration of plants. But, just like rain, climate change also can cause more intense and sometimes damaging snowstorms.

“All this stuff is related to warming, which we know with perfect confidence is almost all due to human activity,” Overpeck said. “The good news is, we know how to stop it if we want to.”