Rio Grande do Sul Faces Severe Weather Alert: Heavy Rains, Strong Winds, and Tornado Risk

Rio Grande do Sul, Brazil, is under a severe weather alert for Sunday, May 20th, with forecasts predicting heavy rain and storms across nearly all regions of the state. According to Climatempo Meteorologia, a slow-moving cold front is enhancing conditions for substantial precipitation, lightning, isolated hail, and winds ranging from 70 to 90 km/h. The most critical areas include the West, Campanha, Missões, Northwest, Central, South, Costa Doce, Metropolitan Region, Valleys, Serra, and the North and Middle coasts, where intense rainfall is expected throughout the day. The Western, Central, and Campanha regions are of particular concern, with rainfall volumes predicted between 40 and 100 millimeters, potentially exceeding 150 millimeters in isolated spots, increasing the risk of floods and flash floods. The unstable weather is expected to continue into Monday, May 21st, as the cold front persists, bringing frequent rain, especially to the West, Missões, Central, Vale do Rio Pardo, Planalto, and Metropolitan regions. Rainfall accumulation in these areas could again reach 40 to 100 millimeters, with isolated areas in the West, Missões, Central, and Vale do Rio Pardo potentially seeing over 150 millimeters. Isolated storms are also possible, and while winds may decrease to 60-80 km/h, localized heavy rain and impacts remain a concern. By Tuesday, May 22nd, the cold front will move towards the northern half of the state, leading to gradual improvement in the West, Campanha, and South. However, rain is forecast to intensify in the Serra, Planalto, Missões, and northern regions, with isolated accumulations possibly exceeding 80 millimeters. The risk of tornadoes is low, but localized storms with gusts up to 90 km/h and occasional hail are still possible, while the West and South may experience more stable conditions.