Rio Grande do Sul is currently facing a critical weather scenario as a cold front advances across the state, prompting the Civil Defense and the Instituto Nacional de Meteorologia (Inmet) to issue severe weather alerts. The situation escalated on Thursday, May 8, 2025, with a red alert for heavy rains that could reach up to 300 millimeters in some regions, particularly affecting the west, central, and southeast areas.
The red alert, which is the highest level on the Inmet scale, is valid until 3 AM on Friday, May 9, and warns of intense rainfall, wind gusts exceeding 100 km/h, and the possibility of hail. In addition to the red alert, orange and yellow alerts have been issued for other regions, indicating varying levels of risk. The orange alert covers areas from the center to the southeast, with expected rainfall between 100 and 200 mm, while the yellow alert in the north and northeast predicts rainfall of 40 to 80 mm.
As meteorologists predict that the rainfall could exceed the historical monthly average for May in just one day, concerns are mounting over the potential for severe storms, including microbursts and even tornadoes. These phenomena are particularly alarming for authorities, as they can cause localized destruction, such as uprooting trees and damaging buildings.
According to Inmet, the areas under the greatest risk include cities like Uruguaiana, Alegrete, and São Borja in the west; Santa Maria, Cachoeira do Sul, and Cruz Alta in the central region; and Pelotas, Rio Grande, and Camaquã in the southeast. The forecast indicates that the heaviest rainfall accumulations, ranging from 200 to 300 mm, will likely occur in the western regions, while the central and southeastern areas may see totals between 100 and 200 mm.
The conditions are particularly concerning due to the saturated ground from previous rains, which increases the likelihood of landslides and flooding. The Civil Defense emphasizes the need for residents in affected areas to remain vigilant and follow safety recommendations. They advise people to avoid unnecessary travel, unplug electrical devices, reinforce vulnerable structures, and seek safe shelters, especially in areas prone to flooding and landslides.
Reports from affected cities have already indicated flooding, fallen trees, and traffic disruptions, underscoring the seriousness of the situation. The Civil Defense has urged residents to monitor local weather updates and stay informed through official channels, including the Inmet website and municipal Civil Defense profiles.
In light of the potential for severe weather, the authorities are reminding the public to prepare for possible power outages and structural damage. They recommend keeping mobile devices charged and having emergency kits readily accessible, particularly for those living in flood-prone areas.
The forecast also suggests that the cold front will continue to move slowly, maintaining unstable weather conditions in the region over the coming days. As the situation develops, the Inmet will continue to monitor the cold front's progress and provide updates.
In 2024, the state experienced its most significant climate catastrophe, with heavy rains causing widespread devastation, resulting in 183 deaths and affecting over 2.4 million people. This history of extreme weather events has heightened concerns among residents and authorities alike.
Looking back at previous events, the 2024 floods resulted in damages to more than 400,000 buildings and the interruption of highways and bridges in 80% of the municipalities affected. Agricultural losses were estimated at R$ 11 billion, and over 442,000 people were displaced from their homes. As the region continues to grapple with the impacts of climate change, the Civil Defense has ramped up efforts to enhance monitoring and prevention strategies.
Farmers in the region are particularly vulnerable, as the saturated soil poses risks to crops, especially for those growing soybeans, rice, and corn. The Civil Defense has advised farmers to avoid planting near rivers and to take measures to protect their agricultural equipment from potential flooding.
In addition to the immediate concerns of flooding and landslides, the forecast raises alarms about the risk of contamination of groundwater supplies due to flooding. The Civil Defense has urged residents to be vigilant about proper waste disposal to prevent blockages in drainage systems.
As the cold front continues to move through Rio Grande do Sul, the Civil Defense remains on high alert, monitoring the situation closely. The public is encouraged to report any emergencies by calling the Fire Department at 193 or the Civil Defense at 199.
In preparation for the severe weather, cities such as Santa Maria and Rio Grande have mobilized resources to clear drainage systems and reinforce barriers in flood-prone areas. Teams are on standby to assist with any emergencies that may arise as the storm approaches.
As the people of Rio Grande do Sul brace for the impending storm, it is crucial for everyone to stay informed, heed safety warnings, and take necessary precautions to protect themselves and their property. The forecast predicts that as the cold front moves northward, the intensity of the rains may decrease in the south, but risks will remain high in the coastal and metropolitan regions.
The ongoing situation is a stark reminder of the increasing frequency of extreme weather events in the region, highlighting the need for continued vigilance and preparedness in the face of nature's unpredictability.
