Storms, cyclone and cold front hit the South region from the weekend

Next Saturday (02/09), the passage of a cold front through Uruguay and Rio Grande do Sul will cause localized storms, with the possibility of hail in isolated areas of the state of Rio Grande do Sul, Santa Catarina, Paraná and southern Mato Grosso do Sul. The most significant rain should be recorded in the northwest and north of Rio Grande do Sul and in the southwest of Santa Catarina, with volumes of around 100 millimeters (mm).

The rapid passage of the cold front through the Southern Region of Brazil will cause a trough (low pressure area) over Rio Grande do Sul on Sunday (3), maintaining the occurrence of localized storms, with significant volumes of rain (around 100 mm) between the state of Rio Grande do Sul and Santa Catarina.

In the early hours of next Monday (4), the forecast still indicates the formation of an extratropical cyclone - a low pressure center (994 hPa) - in the west of Rio Grande do Sul, close to the city of São Borja.

The cyclone should move quickly towards the southeast of Rio Grande do Sul and, around 9 am, will already be in the Atlantic Ocean (with a center of 992 hPa), remaining in this position until 12 pm. Then, the phenomenon will move to the high seas.

Still on Monday, alongside the extratropical cyclone, a cold front will act in the interior of Rio Grande do Sul, Santa Catarina and Paraná and also in the south of Mato Grosso do Sul, causing, as it moves east, accumulated significant amounts of rain in Rio Grande do Sul, mainly in the east of the state, with volumes of around 100 mm.

The forecast also indicates strong gusts of wind, which could reach approximately 100 km/h in isolated areas of the three states of the South Region and Mato Grosso do Sul. The winds could also affect the west, center and south of São Paulo from the beginning and until the end of the afternoon.

The projections of the numerical models differ on some issues, such as the area, intensity and duration of the event. Therefore, it is essential to follow updates on information and weather forecasts on Inmet's website and social networks.