✓ verbatim from the press
A high atmospheric pressure system — an anticyclone — positioned over the Atlantic Ocean is expected to cause rainfall along more than 6,000 kilometers of Brazil's coast through the weekend, according to meteorologist Denis William from Meteored Brasil. The phenomenon affects areas from Santa Catarina to Pará. ✓
Press quotes (1)
"A atuação de um sistema de alta pressão atmosférica, um anticiclone, sobre o Oceano Atlântico deve influenciar as condições do tempo em uma extensa faixa do litoral brasileiro nos próximos dias. De acordo com o meteorologista Denis William, do Meteored Brasil, o fenômeno deve provocar chuvas ao longo de mais de 6 mil quilômetros da costa brasileira até o próximo fim de semana, abrangendo áreas desde Santa Catarina até o Pará."
While anticyclones are normally associated with stable weather, wind circulation around the system is favoring moisture transport to the continent. In the Southern Hemisphere, anticyclones have counterclockwise circulation and descending air movements at their center, but in areas farther from the center — especially when positioned over the ocean — winds transport moisture to the continent, creating favorable conditions for rain. ✓
Press quotes (1)
"No Hemisfério Sul, os anticiclones apresentam circulação anti-horária e movimentos descendentes de ar em sua região central, o que dificulta a formação de nuvens. No entanto, em áreas mais afastadas do centro do sistema — especialmente quando ele está posicionado sobre o oceano — os ventos passam a transportar umidade para o continente, criando condições favoráveis para chuva."
The National Meteorology Institute (Inmet) issued alerts of different severity levels for affected regions. In the Northeast, the situation requires greater attention: the agency maintains an orange alert — indicating danger — for intense rainfall in areas of Pernambuco, Paraíba and Rio Grande do Norte, with forecast volumes between 50 and 100 millimeters per day and winds that can reach 100 km/h. For other regions like Minas Gerais, Rio de Janeiro and Espírito Santo, yellow alerts for potential danger were issued. ✓
Press quotes (2)
"O Instituto Nacional de Meteorologia (Inmet) emitiu um alerta laranja que indica situação de perigo para chuvas intensas em áreas dos Estados de Pernambuco, Paraíba e Rio Grande do Norte."
"uma legenda, cujas significam: - verde: nada previsto; - amarelo: perigo potencial; - laranja: perigo; e – vermelho: grande perigo."
Precipitation should vary by region. In the South and Southeast, forecast accumulations are lower: up to 15 millimeters in eastern Santa Catarina and Paraná, between 3 and 30 millimeters on the São Paulo coast, and between 12 and 46 millimeters in Rio de Janeiro. The Northeast concentrates the highest volumes and risk of disruptions, with recurring rainfall between southern Bahia and Rio Grande do Norte. ✓
Press quotes (1)
"A previsão aponta acumulados de até 15 milímetros no leste catarinense e no Paraná. No litoral paulista, os volumes podem variar entre 3 e 30 milímetros. Já no Rio de Janeiro, os acumulados devem ficar entre 12 e 46 milímetros"
The anticyclone is positioned over the Atlantic Ocean and affects an extension of more than 6,000 kilometers of the Brazilian coast
Covered by only some sources, or where the accounts diverge.
Covered by only some sources (2)
Santa Catarina's Civil Defense confirmed the anticyclone's activity but informed that residents can expect light rainfall
Inmet advises avoiding shelter under trees during wind gusts and turning off electrical appliances
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How long should the phenomenon last and when should weather conditions normalize?
Why it's still unknown: Sources mention forecasts through the weekend but don't specify when the anticyclone should dissipate.
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What is the intensity of this anticyclone compared to similar previous events?
Why it's still unknown: There is no historical context about the frequency or magnitude of similar anticyclones in the Atlantic.
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How are local authorities preparing for possible disruptions in the highest risk regions?
Why it's still unknown: Only Santa Catarina's Civil Defense was consulted; there is no information about preparations in other states.
Did not cover: Revista Oeste