The arrival of an extratropical cyclone in the southern region of Brazil generated warnings for storms and gales for this Saturday (10).
According to Inmet (National Institute of Meteorology), the state of Rio Grande do Sul should be the most affected with danger warnings for coastal winds in the capital and part of the coast, and storm warnings for almost the entire state. Furthermore, there is a warning for potential gales in the Metropolitan region of Porto Alegre and Serra Gaúcha.
In Santa Catarina the attention should be paid to storms throughout the state. There is also the possibility of intense rain in the capital, Vale do Itajaí, Oeste Santa Catarina and the Serrana region.
In Paraná too there is a risk of storms throughout the state. Intense rains are expected to hit Greater Curitiba and much of the southern and western regions of the state.
As a consequence, cyclones promote moisture convergence and wind acceleration, causing the formation of heavy clouds and wind. The stronger the low pressure system, the more rain and wind will be produced
Still according to Inmet, there are warnings of potential storm danger for most of the states of São Paulo and Mato Grosso do Sul. Minas Gerais, Goiás and Mato Grosso tcan also have reflections in its territory.
The state of Mato Grosso and part of the North region are still can be affected by rain intense.
Weather forecast for the south of Brazil
According to Alexandre Nascimento, managing partner of Nottus, the system is forming between Uruguay and southern Rio Grande do Sul, and should be completely formed by the morning.
Between tomorrow night and Sunday morning it will already be in the ocean and will quickly move away. You winds can exceed 100km/h in some areas of the south of the country and vary from 60 to 80 km/h in the Midwest and Southeast until Sunday. Then the system goes away.
There is a risk of heavy rain and hail. “We cannot rule out the risk of extremely severe weather forminglike the downburst and tornadoes between the southern states this Saturday”, says Nascimento.
Understand what a cyclone is
Extratropical cyclones are common meteorological systems on the coast of South and Southeast Brazil.
The phenomenon, which forms between Uruguay and Rio Grande do Sul, generates many rain clouds and strong winds due to the fact that it is an area of low atmospheric pressure organized at several levels.
According to Climatempo, they can form at any time of the year, but are more frequent in the autumn and winter months. Most of them are associated with cold fronts, but they are also capable of starting independently.
*Under AR supervision.
