Severe thunderstorms and intense rain are impacting the southern region of Brazil on Wednesday, July 1 [2].
The weather system threatens critical infrastructure and public safety in the Alto Uruguai region and parts of Santa Catarina. Local authorities have issued urgent warnings as the storm system moves through the area, increasing the risk of flooding and wind damage.
Meteorological agencies, including INMET, report that atmospheric instability and an approaching extratropical cyclone are driving the current conditions. These factors have generated strong convective activity and high moisture content across the region [5].
Officials in Rio Grande do Sul have identified the northern part of the state as the most severely affected area. A meteorology specialist said the worst situation is currently located in the north of Rio Grande do Sul [2].
In Gramado, the Defesa Civil has issued alerts for strong winds and heavy rainfall. A spokesperson for the Defesa Civil de Gramado said rainfall volumes could vary between 70 mm and 120 mm per hour [1]. These alerts for wind and rain are expected to persist through Thursday, July 2 [4].
The storm system brings the possibility of hail alongside the heavy precipitation. Residents in the affected zones are advised to monitor local civil-defense updates as the extratropical cyclone continues to influence the regional weather patterns [3].
“The worst situation is currently located in the north of Rio Grande do Sul.”
The combination of an extratropical cyclone and high moisture content creates a high-risk environment for flash flooding and structural damage in southern Brazil. The specific concentration of rainfall in the north of Rio Grande do Sul suggests a localized but intense weather event that could overwhelm drainage systems and disrupt regional transport.
