The alert is still for a major change in the weather starting this weekend. There will be the formation of an area of low atmospheric pressure between the end of Saturday (29) and Sunday (30) between Paraguay, the South region and Mato Grosso do Sul. This system will later give rise to a cyclone, to a cold front and will spread rain through the Center-South of the country until the beginning of next week.
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The heaviest rains are expected to occur in the west of the South region, south of Mato Grosso do Sul and some areas of the state of São Paulo. They will have a very significant volume, but may be accompanied by hail and wind, especially between the early hours of Saturday and Sunday. There is also potential for disruption to crops, which could cause erosion in some areas, especially in Paraná. In fact, the southern state already has very waterlogged soil due to the frequent rains in October.
“It will rain more heavily in the interior of Matopiba” — Nadiara Pereira
“In addition, the rains paralyze activities in the fields, especially the harvesting of wheat, winter crops and the planting of summer crops,” warns Nadiara Pereira, a meteorologist at Climatempo. In addition, the cold front that will form early next week should advance quickly, spreading more rain across the interior of the country. “But during the first week of November, this system should help organize a new corridor of humidity, being more intense over the northernmost areas of Brazil. As a result, it will rain more significantly over the interior of Matopiba,” notes the meteorologist, referring to another producing region.
"The humidity corridors should form more frequently over the northern half of Brazil and, therefore, above-average rainfall is expected in the interior of the North region, much of the interior of the Northeast and areas further north between the Southeast and the Center-West. Minas Gerais and areas further north of Goiás should receive quite significant volumes”, comments Nadiara. “This rain will ensure the recovery of moisture in the soil for planting summer crops, but, on the other hand, excess moisture could impact activities in the field, running the risk of momentarily paralyzing these activities”.
Cold front, intense cold and frost
Photo: Agência Brasil
As for temperatures, the alert continues for the Frost at the turn of October to November. The expectation is for the advance of an intense polar air mass at the beginning of next week, accompanying the passage of another cold front. The drop in temperature will be more pronounced in the South region, where frost may form in the first days of next month, which could affect the quality of the wheat, which is in the flowering phase in Rio Grande do Sul.
And it's not just the South of Brazil that should be affected. Temperatures should also drop significantly in the interior of the Southeast and Central-West. The cold even reaches areas further south in the North region, a phenomenon known as friagem. Between the Southeast and Central-West, the lowest temperatures should reach values around 6 and 7 degrees Celsius, as will be the case in Avaré (SP), in the southernmost areas of São Paulo, south of Mato Grosso do Sul, mountainous regions of São Paulo and Minas Gerais.
“However, in these areas of the Southeast and Central-West, there is no warning of frost in producing areas. The cold weather should arrive with great intensity, but there is no forecast for frost in sugarcane and coffee producing areas,” says Nadiara.
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