Find out what to do in case of extreme weather according to Civil Defense Rio Grande do Sul faces a week of climate instability, with the formation of an extratropical cyclone and the advance of a cold front predicted for Thursday (6). The systems are expected to cause storms and winds of up to 100 km/h in several regions of the state. Before that, this Tuesday (4), there is a high risk of flooding on the Western Border. The information comes from the National Center for Natural Disaster Monitoring and Alerts (Cemaden), the National Institute of Meteorology (Inmet) and Climatempo Meteorologia. ? Access the g1 RS channel on WhatsApp This Tuesday, Cemaden points to a high possibility of gradual flooding in the Uruguaiana region. The risk occurs due to the propagation of the flood wave in the Uruguay River basin and its tributaries. The rivers are outside the channel in the municipalities of Itaqui and Uruguaiana, which can cause or worsen flooding in low-lying areas. For the Porto Alegre region, the risk of hydrological events this Tuesday is moderate. The forecast of rain, added to soil moisture, can cause streams to overflow and urban flooding, especially in densely occupied areas. Instability decreases on Wednesday (5), especially in the western half, where the sun appears again. Moisture circulation maintains light to moderate rain in the East and North half, with accumulations of between 10 and 30 millimeters. In Porto Alegre, the predicted minimum is 18°C ??and the maximum is 24°C, with a risk of isolated showers. View of the Uruguay River, in Uruguaiana (RS), on the border with Argentina Reproduction/RBS TV Cyclone and windstorm on Thursday The most significant weather event of the week occurs on Thursday. A cold front associated with an extratropical cyclone is advancing rapidly across the south of the country. Inmet published a danger warning for storms, valid for the entire day. The rains first hit the West, Campanha and the South of the state, then advancing to the Center, Vales, Costa Doce and the Metropolitan Region. There is potential for intense electrical activity, hail and heavy rain, with accumulations of up to 80 millimeters. The main risk, however, is associated with winds. Climatempo predicts gusts exceeding 90 km/h, while Inmet estimates winds between 60 and 100 km/h. There is a risk of electricity cuts, damage to crops, falling trees and flooding. In the capital, the day will be unstable, with temperatures between 17°C and 24°C. Friday with drop in temperature On Friday (7), the extratropical cyclone intensifies over the ocean and the cold front advances. Rain occurs at dawn and in the morning, mainly in the North and East, but decreases throughout the day with the opening of the sun. Despite the improvement in the weather, the wind continues. Gusts can cause disruption in the East, Metropolitan Region, Valleys and Coast. In Porto Alegre, winds can reach 70 km/h, with temperatures between 18°C ??and 27°C. Throughout Friday, temperatures decline in the state due to the arrival of a colder air mass. In case of gusts of wind, Inmet's advice is not to take shelter under trees and not to park vehicles near transmission towers and advertising signs. The agency recommends turning off electrical appliances and seeking information from Civil Defense (telephone 199) and the Fire Department (telephone 193). Rain in RS André Ávila/Agência RBS VIDEOS: Everything about RS