A cyclone drops temperatures and brings rain on the last weekend of April, with intense storms and cold weather.

Written by Alisson Ficher

Published on 25/04/2026 at 14:17

Be the first to react!

Instability advances through the South with extratropical cyclone, intensifies rains between Saturday and Sunday and drops temperatures, with forecast of more accentuated cold in the mountains and reduced maximums in Santa Catarina and Paraná during the last weekend of April.

The formation of an extratropical cyclone off the coast of Rio Grande do Sul is expected to change the weather in Southern Brazil between Saturday, April 25, and Sunday, April 26, with heavy rain, risk of storms, and a drop in temperatures.

According to Meteored, the system begins to organize between Friday night, April 24, and Saturday morning, associated with a cold front advancing through the region and increasing atmospheric instability.

Cyclone formation and weather change in the South

The extratropical cyclone develops from a low-pressure area linked to the cold front, a mechanism that favors the formation of heavy clouds and expands the conditions for persistent rain in part of the Southern Region.

ARTICLE CONTINUES BELOW

Advance of rain and risk of storms on Sunday

On Sunday, April 26, the forecast indicates increased instability in Santa Catarina, with rain at different times of the day and the possibility of more intense downpours, especially in the Far West of the state.

In Paraná, rain is expected to begin in the morning in the western and southwestern regions, with moderate to heavy intensity, before advancing to other areas throughout the day.

The central Paraná region may also register storms during the night, while the combination of a cold front, humidity, and low pressure keeps the weather unstable in much of both states.

Temperature drop and more intense cold in the mountains

In addition to the rain, the cyclone and cold front are expected to cause a drop in temperatures, especially on Sunday, when minimums may approach 0°C in mountainous areas of the South.

During the afternoon, maximums are not expected to exceed 25°C in much of Santa Catarina and Paraná, with the exception of the far north of Paraná, where temperatures may still reach 30°C.

In central-southern Paraná, northern Santa Catarina, and the Santa Catarina Mountains, the forecast indicates colder afternoons, with maximums between 17°C and 18°C in some municipalities.

Capitals register smaller temperature variation

Florianópolis is expected to have a minimum of 20°C and a maximum of 23°C on Sunday, while Curitiba may register a minimum of 18°C and a maximum of 25°C, according to the forecast released by Meteored.

The weather change occurs on the last weekend of April and reinforces a typical pattern of transition to colder days, with the advance of frontal systems and greater thermal contrast in the Center-South of the country.

A cyclone drops temperatures and brings rain on the last weekend of April, with intense storms and cold weather.

Instability advances through the South with extratropical cyclone, intensifies rains between Saturday and Sunday and drops temperatures, with forecast of more accentuated cold in the mountains and reduced maximums in Santa Catarina and Paraná during the last weekend of April.

Cyclone formation and weather change in the South

Advance of rain and risk of storms on Sunday

Temperature drop and more intense cold in the mountains

Capitals register smaller temperature variation

The Soviet Union spent 22 years drilling into the Earth’s crust and reached a depth of 12,262 meters — they found water where it was thought impossible, hydrogen bubbling from the rock, granite that is 2.7 billion years old, and temperatures of 180 degrees that melted the drill bits.

Ethiopia has banned gasoline and diesel cars, placed over a hundred silent electric buses on the streets of Addis Ababa, and now aims for half a million electric vehicles by 2030, all powered by Africa’s largest dam and a courage that few countries have shown.

Egypt wants to draw 10 million cubic meters of water from the Nile per day into the desert, irrigate a new agricultural frontier, and build a city where there is currently only sand.

Norway is drilling 27 kilometers of rock 392 meters below the bottom of a fjord to build the world’s largest and deepest underwater road tunnel — when completed, a 21-hour journey will be reduced to 10.

An astronaut spent 340 days in space while his twin brother stayed on Earth, and NASA found a “rejuvenating” effect, genes, microbiome, cognition, and immune system that revealed the biological cost of living outside the planet.

Chinese engineers begin filling a 217-meter dam at an altitude of 3,000 meters and prepare a 2,240 MW hydroelectric power plant to integrate hydropower, solar, and wind energy in the upper Jinsha.

End of an era: Nissan announces its departure from the country with the closure of a historic factory after 7 years producing the Frontier, negotiates operations with 2 groups, and integrates a global strategy that has already reorganized 36 markets, in Córdoba, Argentina.

Belgium surprises the world by repurchasing 15 Gepard anti-aircraft systems, equipped with twin cannons and radar, in a package to reinforce Ukraine’s defense against drones and missiles.

Brazilian professor disappears for 5 years and ‘rises from the ashes’ with an emotional reunion with his 70-year-old mother after being identified on a highway; case exposes 81,000 missing people in Brazil

The Brazilian city of the crooked buildings, which is being “swallowed” by the sea, receives more than R$ 20 million after a R$ 276.6 million package for 214 cities, with transfers of R$ 2.5 million per tourist resort.

A 15-meter electric ferry has already transported over 41,000 passengers in Norway, consumes up to eight times less energy than diesel vessels, and the Hyke F-15 shows how urban water transport can become a real, silent, and low-cost alternative for coastal cities.

A cyclone drops temperatures and brings rain on the last weekend of April, with intense storms and cold weather.

Instability advances through the South with extratropical cyclone, intensifies rains between Saturday and Sunday and drops temperatures, with forecast of more accentuated cold in the mountains and reduced maximums in Santa Catarina and Paraná during the last weekend of April.

Cyclone formation and weather change in the South

Advance of rain and risk of storms on Sunday

Temperature drop and more intense cold in the mountains

Capitals register smaller temperature variation

The Soviet Union spent 22 years drilling into the Earth’s crust and reached a depth of 12,262 meters — they found water where it was thought impossible, hydrogen bubbling from the rock, granite that is 2.7 billion years old, and temperatures of 180 degrees that melted the drill bits.

Ethiopia has banned gasoline and diesel cars, placed over a hundred silent electric buses on the streets of Addis Ababa, and now aims for half a million electric vehicles by 2030, all powered by Africa’s largest dam and a courage that few countries have shown.

Egypt wants to draw 10 million cubic meters of water from the Nile per day into the desert, irrigate a new agricultural frontier, and build a city where there is currently only sand.

Norway is drilling 27 kilometers of rock 392 meters below the bottom of a fjord to build the world’s largest and deepest underwater road tunnel — when completed, a 21-hour journey will be reduced to 10.

An astronaut spent 340 days in space while his twin brother stayed on Earth, and NASA found a “rejuvenating” effect, genes, microbiome, cognition, and immune system that revealed the biological cost of living outside the planet.

Chinese engineers begin filling a 217-meter dam at an altitude of 3,000 meters and prepare a 2,240 MW hydroelectric power plant to integrate hydropower, solar, and wind energy in the upper Jinsha.

Belgium surprises the world by repurchasing 15 Gepard anti-aircraft systems, equipped with twin cannons and radar, in a package to reinforce Ukraine’s defense against drones and missiles.

Brazilian professor disappears for 5 years and ‘rises from the ashes’ with an emotional reunion with his 70-year-old mother after being identified on a highway; case exposes 81,000 missing people in Brazil

The Brazilian city of the crooked buildings, which is being “swallowed” by the sea, receives more than R$ 20 million after a R$ 276.6 million package for 214 cities, with transfers of R$ 2.5 million per tourist resort.

While many elderly people still face difficulties seeing due to lack of access, Porto Alegre already delivers free glasses within 10 days for those over 60 and can benefit 320,000 people.

A mountain road with 284 curves, considered one of the most beautiful in Brazil, will be closed to cars on Sunday because hundreds of cyclists will climb the 24 km of road in Santa Catarina.

End of an era: Nissan announces its departure from the country with the closure of a historic factory after 7 years producing the Frontier, negotiates operations with 2 groups, and integrates a global strategy that has already reorganized 36 markets, in Córdoba, Argentina.

Belgium surprises the world by repurchasing 15 Gepard anti-aircraft systems, equipped with twin cannons and radar, in a package to reinforce Ukraine’s defense against drones and missiles.

Brazilian professor disappears for 5 years and ‘rises from the ashes’ with an emotional reunion with his 70-year-old mother after being identified on a highway; case exposes 81,000 missing people in Brazil

The Brazilian city of the crooked buildings, which is being “swallowed” by the sea, receives more than R$ 20 million after a R$ 276.6 million package for 214 cities, with transfers of R$ 2.5 million per tourist resort.

A 15-meter electric ferry has already transported over 41,000 passengers in Norway, consumes up to eight times less energy than diesel vessels, and the Hyke F-15 shows how urban water transport can become a real, silent, and low-cost alternative for coastal cities.