On Thursday, May 8, 2025, the Instituto Nacional de Meteorologia (Inmet) issued a total of 12 meteorological alerts covering 1,382 municipalities across 12 states in Brazil. These alerts indicate severe storm conditions, intense rainfall, and the potential for hail, affecting regions from Amapá in the north to Santa Catarina and Rio Grande do Sul in the south.
The alerts were classified by severity, with the most critical being a Red Alert for severe storms, which was put into effect at 4:00 AM on May 8 and is expected to last until 3:00 AM on May 9. This alert affects 64 municipalities in Rio Grande do Sul, including key cities like Porto Alegre, Canoas, and Pelotas. The forecast predicts rain exceeding 60 mm per hour or daily accumulations greater than 100 mm, alongside wind gusts surpassing 100 km/h. The risks associated with this alert include significant damage to buildings, power outages, and severe disruptions to road transport.
In addition to the Red Alert, an Orange Alert was also issued, starting at 10:07 AM on May 8 and concluding at 6:00 PM on May 9. This alert impacts 337 municipalities in Santa Catarina and Rio Grande do Sul, warning of rain between 30 and 60 mm per hour or 50 to 100 mm per day, with wind gusts of 60 to 100 km/h. Residents are advised to prepare for potential power outages, falling trees, flooding, and damage to crops.
A Yellow Alert for intense rains was also announced, effective from 10:00 AM on May 8 until 10:00 AM on May 9, covering 87 municipalities in the northern regions, including parts of Amazonas, Pará, Amapá, and Roraima. The forecast indicates rain between 20 and 30 mm per hour or up to 50 mm in a day, with wind speeds of 40 to 60 km/h.
The issuance of these alerts underscores the ongoing atmospheric instability affecting much of Brazil, attributed to active weather systems including cold fronts and moisture from the Amazon. Inmet's alerts serve as critical tools for public safety, allowing residents in affected areas to prepare and respond adequately to the forecasted conditions.
As the alerts were disseminated, local authorities emphasized the importance of following safety guidelines. Residents were urged to stay indoors during storms, to avoid open areas, and to secure loose objects that could become projectiles in high winds. The Civil Defense has been actively monitoring the situation, ready to assist communities as needed.
In Santa Maria, Rio Grande do Sul, the situation escalated quickly as the sky darkened, prompting the state Civil Defense to issue a Red Alert due to the high risk of flooding from heavy rains, strong winds, and lightning. This alert is particularly concerning as it covers both urban and rural areas, with expected impacts on public infrastructure and homes. The forecast predicts accumulations exceeding 80 mm, especially in the afternoon of May 9.
Local authorities have warned of wind gusts potentially exceeding 80 km/h and the possibility of hail, which could severely affect agriculture and infrastructure. Residents were advised to seek immediate shelter and follow safety protocols, including avoiding travel unless absolutely necessary.
In response to the impending storms, the Santa Maria municipal government activated its emergency contingency plan. This included mobilizing teams to clear drainage systems and prepare temporary shelters in schools and community centers. The mayor, Jorge Pozzobom, announced the suspension of classes in municipal schools to ensure the safety of students and staff.
As the storms approached, residents took proactive measures. Many prepared by securing their homes and gathering supplies. Community networks were established to share information and resources, demonstrating resilience in the face of adversity. Local businesses also felt the impact, with many reporting decreased foot traffic as consumers opted to stay home.
Inmet reported that the frequency of extreme weather events in Brazil has been rising, with over 250 alerts issued in April alone. This trend highlights the growing influence of climate change, which has intensified weather patterns leading to heatwaves, sudden storms, and flooding.
Looking forward, meteorologists indicate that unstable weather conditions are likely to persist in the coming days, particularly in the southern and northern regions of Brazil. Some areas could see rainfall totals exceeding 150 mm by the end of the week, further complicating the situation.
As the situation develops, residents are encouraged to stay informed through official channels, including Inmet's website and mobile app, as well as local news outlets. The importance of preparedness and community solidarity cannot be overstated in times of such weather-related crises.
In conclusion, the alerts issued by Inmet serve as a crucial reminder of the unpredictable nature of Brazil's climate and the need for ongoing vigilance. As communities brace for the impact of these severe weather conditions, the cooperation between local authorities and residents will be essential in minimizing risk and ensuring safety.
