Although rain is not very present in the period before winterthe Central-South states are forecast for strong storms in the coming days. This occurs until the winter solstice, which takes place at 5:24 am on June 21st, and officially marks the coldest season of the year.
One new cold front arrives this Thursday (11) in the states of the region due to the passage of an extratropical cyclone.
In the South, Paraná, Santa Catarina and Rio Grande do Sul are expected to receive showers of rain and strong winds throughout the day.
In the Southeast, the rains will remain in São Paulo throughout this Thursday and will advance to Minas Gerais and Rio de Janeiro with the weather closed and no storms expected. Relative air humidity will remain good.
In the Center-West, Mato Grosso do Sul will receive most of the rainfall, with storms and thunderstorms. Goiás will also have influence from the neighboring state, but with less intensity. Relative air humidity can be below 30%.
Rain will also appear on the northeastern coast and will be present between the afternoon and evening in the northern states.
Rain forecast
The rains began to concentrate on Wednesday (10) and should continue over the next two weeks.
South Region
The rainfall volume is concentrated in the states until next Friday (12). Paraná, Santa Catarina and the north of Rio Grande do Sul are the regions with a warning for moderate to heavy rain.
After this period, the rains should take a break, but will return between the 17th and 19th of June, mainly in Santa Catarina and Paraná. As well as heavy rain is forecast for the entire region between the 21st and 23rd.
Southeast Region
It should rain in all states until Sunday (14). The interior of São Paulo is the region with the highest alert for high rainfall and rainfall. The sun must be present during these days.
Between Monday (15) and Tuesday (16), Rio de Janeiro, Minas Gerais and Espírito Santo received more rain, which reduced the flow and returned to the Southeast between the 18th and 23rd.
Midwest Region
Like the Southeast, all states in the Central-West region and the federal district should receive rain until Sunday (14). The rainfall volume will be mainly concentrated in Mato Grosso do Sul, which should prepare for heavy precipitation on these days, despite the forecast of sunny days.
The rain should return to the region promptly on the 17th, mainly in Mato Grosso do Sul, and spread across all states between the 18th and 23rd as well.
Rain volume
The average rainfall for the month is low, according to Climatempo, and should not exceed 80 mm (millimetres).
The northern part of Minas Gerais is least affected by rain. The forecast is that rainfall will not reach more than 40 mm.
On the other hand, the center-south of Mato Grosso do Sul and the southernmost part of São Paulo should reach 80 mm, possibly exceeding 100 mm of rain. This is because the states are close to Paraná, which, like the Itajaí Valley, has the highest average rainfall for the next few days — ranging from 100 mm to 180 mm.
What explains the atypical rains?
According to Climatempo, this rare phenomenon in dry months is caused by the passage and formation of related to extratropical cyclones.
Cold fronts should form throughout the days and, between Friday and Sunday, and the Midwest.
The first cold front formed on Tuesday (9), in the south of the country, from a which soon moved away to the high seas.
On Wednesday (10), a new area of low atmospheric pressure intensified for the South and Central-West regions of Brazil.
At the end of next week, between the 17th and 19th, this low atmospheric pressure formation returns to the South.
*Under the supervision of Carolina Figueiredo
