Rio Grande do Sul Braces for Extreme Weather: From Frost to 31°C Heat

The Brazilian state of Rio Grande do Sul is set to experience a week of dramatic weather contrasts, beginning with intense cold and the possibility of frost, followed by a significant rise in temperatures. On Monday, February 13th, a polar air mass will bring clear skies and dry conditions, with minimum temperatures expected to hover around 0°C in many regions, particularly in Campanha, Oeste, Centro, Serra, and Nordeste, where frost is likely. Daytime temperatures will remain mild despite the sunshine. Tuesday, February 14th, will continue the pattern of firm weather and clear skies, with a wide thermal amplitude, meaning very cold mornings and gradually warming afternoons. Frost remains a possibility in the coldest areas. A notable shift is anticipated from Wednesday, February 15th, as north and northwest winds begin to usher in warm air from Northern Brazil. These winds could reach speeds over 70 km/h, posing a risk of disruptions, especially in the Vales and Região Central, including Santa Maria. By Thursday, February 16th, heat will become the dominant feature, with maximum temperatures potentially reaching 28°C in cities like Porto Xavier and Teutônia. This warming trend will continue through the weekend, with temperatures possibly hitting 31°C in the Região Metropolitana, Vale do Caí, Vale dos Sinos, Paranhana, and Região Central by Saturday and Sunday. However, the southern parts of the state, specifically Campanha and Zona Sul, might face severe weather conditions towards the end of the week, including heavy rain and hail, with the potential return of thunderstorms.