November 21, 2025
The Brazilian weather agency INMET has issued a widespread Orange Alert (“Alerta Laranja”) for dangerous rainfall, strong winds, and flash-flood risks across 12 states, including Amazonas, Pará, Maranhão, Roraima and Ceará. This alert covers regions where rainfall may exceed 50–100 mm in 24 hours with risk of sudden flooding and landslides. (Source: Rádio Itatiaia)
The severe weather coincides with ongoing monitoring of Cyclone Akará, a rare South Atlantic tropical system named by the Brazilian Navy Hydrographic Centre. Although not making landfall, the cyclone’s offshore circulation is enhancing moisture flow and intensifying rainfall over northern and northeastern Brazil. (Source: Weather.com)
Local authorities warn of road blockages, overflowing streams, urban flooding and electrical outages. INMET also reiterates that residents should avoid walking through floodwaters, stay away from slopes, and monitor municipal civil-defense instructions. (Source: G1 Brazil)
Extreme rainfall events like these continue to raise concerns among climate researchers about long-term changes in tropical moisture patterns. If you want a deeper breakdown of how climate change influences storms like Cyclone Akará, explore our detailed analysis here: Climate Change Myths 2025.
According to atmospheric researchers, the current rain pattern is being amplified by a strong convergence zone formed between Amazonian moisture and a mid-level cyclonic vortex linked to Cyclone Akará. Satellite data from the Brazilian National Institute for Space Research (INPE) show unusually high precipitable-water values over northern Brazil, meaning the atmosphere is holding far more moisture than normal. When this moisture interacts with rising warm air over the rainforest, it creates persistent storm bands capable of producing sudden, high-volume rainfall — the main reason alerts like this are classified at the orange level.
Key Safety Notes
- Avoid riverbanks, steep slopes, and flood-prone roads.
- Expect travel delays, power interruptions, and poor visibility.
- Store essentials: water, power banks, medicines, and documents.
- After flooding, watch for respiratory issues linked to mould exposure.
