Following the trend of recent days, Thursday (27/11) is scheduled to be characterized by rain in a large part of the Brazilian territory. According to the National Institute of Meteorology (Inmet), 15 states plus DF are under warnings of danger and possible risk of heavy rainfall. They are: AC, AP, AM, BA, DF, ES, GO, MA, MT, MG, PA, PI, RJ, RO, RR, and TO.
Rain is expected to fall in most parts of the country in the form of scattered showers, especially in Rio de Janeiro, Sao Paulo and Minas Gerais. The caveat is that in areas such as the Mineiro Triangle, the inland areas of São Paulo and the southern center of Mato Grosso do Sul, humidity should remain below 20% during the afternoon, creating a contrast with coastal and mountainous stretches that may still see temporary precipitation.
The behavior expected for Thursday is a result of the weakening of the moisture corridor maintained between the north and the northeast which in recent days has helped in organizing the storms that have advanced over the central regions of the country.
This more persistent band is no longer active, and the atmosphere is losing the structure that favored Wednesday’s (11/26) storms. However, the pattern of heat and humidity remains, supporting isolated showers in the southeast and south, without the risk of prolonged storms.
This pattern is common at the end of November: intense heat, high humidity, and a cycle that changes very quickly.
In the north, the instability remains more active, and states such as Acre and southern Amazon may record large amounts of rain within a short period of time. The wetter range also reaches parts of Pará and Rondonia, where there is a risk of heavy rain accompanied by thunderstorms.
In the Midwest, Mato Grosso and part of Goiás are expected to see intermittent rain, with periods of sunshine alternating with scattered showers at the end of the day.
In the south, the regions of Rio Grande do Sul, Santa Catarina and Paraná will have a similar behavior to the southeast, with fast and poorly distributed rainfall, always associated with heat accumulated throughout the day. On the coasts of São Paulo and Rio, moisture from the ocean can form rapidly developing clouds, but with no sign of organized storms.