The weekend was very rainy in Rio Grande do Sul, Santa Catarina and Paraná. In the state of Rio Grande do Sul, according to Civil Defense, more than 20 municipalities recorded complications and more than 170 people are homeless and almost 30 homeless. The actions of several systems have caused all this rain, a combination of a cold front, low-level jet and a new area of low pressure. There is a risk of flooding, increased levels of rivers and streams, floods, landslides, as well as storms accompanied by lightning and gusts of wind.
Therefore, the next few days will still be a storm warning for the three states. According to Climatempo meteorologists, low atmospheric pressure is expected to evolve into an extratropical cyclone on the country’s coast, between Wednesday and Thursday, associated with a new cold front.
The volume of rain, however, will not be the same in all regions. Until the 4th of July, the largest volumes in Rio Grande do Sul are concentrated in the region of the Taquari-Antas river basin, the region of Erechim, Missões and Noroeste, Passo Fundo.
In Santa Catarina, almost the entire interior is under attention, with emphasis on the Uruguai river basin, São Miguel do Oeste, Chapecó, Xanxerê, Campos Novos, Lages and the entire Iguaçu basin region. In the state of Paraná, the largest volumes will be in the region of the Uruguay River basin, on the border with Santa Catarina, southwest and south of the state.
Temperatures are also expected to drop, as behind the cold front a new mass of polar air is expected to advance over Rio Grande do Sul. The cold gains strength mainly during Thursday night and will remain until the second half of the week.
In the state of São Paulo, the trend is for stable weather throughout the week and at the weekend temperatures are expected to drop again, with maximums around 18ºC.