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The subtropical storm Maní still generates abundant rains over Bahia, especially the coffee zone of Vitória da Conquista and the northern part of Minas Gerais earlier this week. Furthermore, further south, a cold front causes heavy rains in the center, south and east of Rio Grande do Sul, west of Paraná and south of Mato Grosso do Sul, benefiting rice and tobacco (Rio Grande do Sul) and the sugar cane. soy and corn sugar (Paraná and Mato Grosso do Sul).
From Tuesday 27 to Wednesday 28 the rain will return, which will be more intense in the west of Bahia, southeast of Goiás, Triângulo Mineiro and central and southwest of Mato Grosso do Sul. Later, between Thursday, 29, and next Thursday 5, the cold front will find the low pressure system responsible for the subtropical storm and the formation of the first humidity corridor of the Brazilian hydrological period is expected. There are eight days with persistent rain and lower temperatures in an area that includes Espírito Santo, Minas Gerais, Goiás, Mato Grosso, Matopiba and southern Pará, in this area the accumulated minimum will be 50 millimeters.
From the northwest of Minas Gerais to the southwest of Bahia, it should rain 150 millimeters in just over a week. As in any event of persistent rain, there are areas that will not receive such significant rainfall. It will be the case of the south, west and southwest of São Paulo and part of the south of Mato Grosso do Sul that will receive less than 20 millimeters.
The temperature will drop, not just to the max. The entry of a strong polar air mass for the time of year lowers the temperature in much of Brazil. The minimum temperature is expected to drop below 4 ° C in some areas near Santana do Livramento and between Bagé and Canguçu in the early hours of next Friday 30, bringing light frosts to the rice and tobacco producing areas. “The late cold is one of the characteristics of the La Niña phenomenon,” says meteorologist Celso Oliveira.
After the formation of the humidity corridor, the rain will disperse throughout Brazil. The most intense rains will occur from the north of Rio Grande do Sul to the south and east of Paraná, and from the east of São Paulo to the south of Minas Gerais and in the Amazon. Until the third week of November, there is no forecast for such organized rain over Brazil. In the middle of the month, the rains will be more intense over western Bahia, Goiás, Minas Gerais and Espírito Santo. As of November 20, the showers spread throughout Brazil, reaching from the north of Rio Grande do Sul, to Pará, Tocantins and Bahia, passing through a good part of the Southeast and Midwest.
Cumulative weekend
Rain became more intense over the Southeast and Midwest as a subtropical storm called PEANUT formed. Several municipalities of Mato Grosso, Mato Grosso do Sul, Goiás, São Paulo, Minas Gerais and Espírito Santo received more than 50 millimeters. According to the Agronomic Institute of Campinas (IAC), in Paulo de Faria-SP, the accumulated reached 200 millimeters in seven days. In Dores do Indaiá-MG, it rained 145 millimeters. Marilândia-ES received 115 millimeters. Finally, Cristalina-GO received 160 millimeters in seven days.
For the first time since the beginning of spring, soil moisture has reached the minimum necessary for agricultural development in Espírito Santo, east, central and west of Minas Gerais and Goiás, east of Mato Grosso and northeast of Mato Grosso do Sul. Even so, there are areas with low soil moisture and little rainfall, as is the case in much of São Paulo and Mato Grosso do Sul, north and south of Minas Gerais, Triângulo Mineiro, Parecis and Pantanal de Mato Grosso. The delay in the rains due to the La Niña phenomenon already has consequences. In Mato Grosso, the planted area reaches only 10% compared to 30% last year. In addition, there is a risk of losses in the second corn and cotton crop in 2021 as the cycle moves into fall and requires rains in a period that does not occur as often.
In the south, the heavy rains in recent days on the border between Rio Grande do Sul and Uruguay helped the germination of newly installed rice. But the rainfall has not yet reached corn areas in the northwest of Rio Grande do Sul, or Paraná, whose corn languishes in the face of a dry spring and the installation of soybeans (Paraná) is delayed due to lack of regular rains. In Matopiba (the cereal-producing area of Maranhão, Tocantins, Piauí and Bahía), the rain returned to Tocantins and the Carolina region. In most of the producers it has not rained regularly, but the producers install in the dust the expectation of more intense rains in the coming days.
