This Sunday (16), two meteorological institutes, MetSul and Climatempo, issued an alert of snow and frozen rain for the South Region, which will receive an intense polar mass this weekend.
The forecast is that the phenomena can happen between Thursday (20) and Saturday (22), in Rio Grande do Sul, Santa Catarina and Paraná, more precisely in the Planalto de Palmas region. “Strong cold air masses occur virtually every year in southern Brazil, but this will be exceptionally strong and comprehensive for the second half of August,” reports MetSul.
Although the region is the most affected, with minimums of -3 ºC, parts of the Southeast and Midwest will also be in the path of the polar mass, which may register minimums below 9 ºC.
Snow in the South Region
According to Celso Oliveira, meteorologist at Instituto Somar, this is an extreme event that has not happened since 2013, when 150 municipalities in Santa Catarina registered snow. “It will be snow days, starting on Thursday and going until Saturday. The forecast accumulated in some areas of Santa Catarina and Rio Grande do Sul is 10 centimeters of snow thickness or even more, according to some simulations”.
In addition, the Climatempo alert indicates that the combination of the cold front with the strong polar air mass and the low atmospheric pressure cyclonic circulation on Thursday (20) will bring very cold and wet winds to the region.
As a result, it is possible that, in addition to snow, the Rio Grande do Sul and Santa Catarina mountains record frozen rains. The forecast also points to the occurrence of frost in these places, but in a more limited area due to the humidity present.