The National Institute of Meteorology (INMET) has issued an orange alert for intense rains and strong winds across various cities in the Southeast of Brazil, indicating severe weather conditions expected to last at least through Friday, December 27. The warning impacts around 46 municipalities, with forecasts of significant rainfall and wind speeds.
Initially, the municipalities were classified as under yellow alert—representing a lower risk level—due to estimated rain between 20 to 30 millimeters per hour, or around 50 millimeters per day, accompanied by winds ranging from 40 to 60 km/h. Following these forecasts, the INMET re-assessed the situation and elevated the alert level to orange, which signifies the potential for danger. The current predictions suggest rainfall could escalate to between 30 to 60 millimeters per hour, accumulating to around 100 millimeters within 24 hours. Wind gusts may reach between 60 and 100 km/h.
This significant weather change results from the South Atlantic Convergence Zone (ZCAS), which is expected to focus precipitation across the region, particularly near the borders of São Paulo and Minas Gerais. The ZCAS typically triggers continuous rainfall over broad areas, posing risks of urban flooding, rising river levels, and potential landslides especially in the most vulnerable areas.
According to INMET, "There is potential for heavy rain, winds, thunderstorms, and even hail." These adverse conditions call for proactive measures, as meteorological phenomena can lead to widespread disruption including electrical outages and infrastructural damage. The authorities are advising residents to avoid areas prone to flooding and remain vigilant.
December 25 saw significant rainfall impacts, with reports of flooding already hindering mobility across various neighborhoods, particularly within the metropolitan area of São Paulo. The state of São Paulo is among the hardest hit by the persistent rain, leading to interruptions of electrical supply to around 38,000 homes, primarily due to downed wires and flooding. Enel, the electric utility company, is currently working to restore power but warned residents of possible additional outages.
Within the seismic building blocks of emergency preparedness, directives suggest individuals heed safety guidelines during the orange alert. Residents are advised to steer clear of downed power lines, immediately report outages, and keep away from floodwaters. Authorities recommend not taking shelter under trees, which are susceptible to falling branches from high winds, and securing outdoor items to prevent them from becoming hazardous projectiles.
"The current climatic scenario is driven by the formation of the ZCAS," referenced INMET, underscoring the urgency of the situation. With increased vigilance, municipalities have begun preemptively responding to the threats posed by the weather. The Civil Defense has been monitoring high-risk areas to minimize the impacts of potential flooding and landslides.
Residents of several cities, including Belo Horizonte, are encouraged to stay alert for updates and announcements from local authorities. Current conditions forecast continued rainstorms through the week, meaning it’s imperative to remain prepared and informed. Those living near steep terrain or flood-prone areas should take special care and may need to evacuate based on local advisories.
Emergency phone numbers have been provided for public safety: individuals can report emergencies to the Civil Defense at 199 or to the Fire Department at 193. Ensuring rapid communication during such weather alerts is key to safeguarding public safety.
To mitigate risks during heavy rainfall, it is also recommended to cover drainage systems to prevent blockages. Electric devices should be unplugged during thunderstorms to avoid potential surges. Adopting these precautionary measures can help protect both life and property amid the impending adverse weather conditions.
Overall, the INMET alert stands as a reminder for vigilance among the populace, accentuating the necessity of adhering to safety protocols and staying informed during hazardous weather events. The potential impact of heavy rains and strong winds can lead to transformative community challenges, requiring collective resilience and precautionary actions.
