The day began humid in much of Rio Grande do Sul, leading to a strong rainstorm in the metropolitan area of Porto Alegre in the afternoon of Thursday, the 12th. In the Southern Zone of the capital, dark clouds heralded the coming storm, and by around 3 PM, hail was reported in the region. This rapid change in weather conditions not only surprised residents but also raised concerns regarding the intensity of the storms that can occur during this time of year.

In Capão da Porteira, a district in Viamão, there was significant rainfall accompanied by hail. Local measurements indicated that nearly 38 millimeters of rain fell in just 20 minutes, highlighting the storm's severity. This rapid accumulation of water can lead to flash flooding, posing risks to both infrastructure and safety in urban areas. Such weather events are not uncommon in this Brazilian region during the summer months, but the intensity of this storm appears to be particularly notable.

Residents and local authorities are likely to be on high alert following this incident, as similar storms can reappear given current climatic conditions. Weather forecasts will be scrutinized carefully to prepare for any future storms. This event underscores the importance of having effective weather monitoring systems in place to ensure community safety during unpredictable weather patterns.