May should be marked by above average rain in Santa Catarina, warns Civil Defense

The first weeks of May will be marked with frequent rain in Santa Catarina.

According to the Meteorology team of the Secretariat for Civil Protection and Defense (SDC), rains and storms will begin this weekend and the beginning of May, with greater concentration in areas close to the border with Rio Grande do Sul. regions that present a moderate risk for events associated with flooding and occasional flash floods are: Oeste, Planalto Sul, Litoral Sul and part of the Alto Vale do Itajaí. In other regions, the risk is low.

This time, the rains and storms are caused by the presence of an atmospheric blockage that should hinder the advance of the cold fronts that form between Uruguay and Rio Grande do Sul towards Santa Catarina.

As a result, these cold fronts will have more stationary characteristics, that is, with slow movement, favoring the rain systems to act for a longer period. This condition is expected to persist throughout the first fortnight of May, with rainfall above the average for this season.

This Saturday, the 27th, the weather will remain firm, with sun, heat and varying clouds across the state. Starting at night, the approach of a cold front favors an increase in cloudiness in the areas bordering Rio Grande do Sul, with the possibility of occasionally intense rain and isolated thunderstorms.

The risk is moderate for flooding and occasional flash floods.

During the early hours and morning of Sunday, the 28th, instability spreads throughout the West, Planalto Sul, Litoral Sul, parts of Alto Vale do Itajaí and Grande Florianópolis. As the day progresses, the rainy condition also extends to other regions of the state.

First week of May

Between Monday, 29th, and Wednesday, May 1st, the stationary cold front should present a slight displacement towards the state of Rio Grande do Sul, maintaining the condition for rains and storms in all regions of Santa Catarina, especially in the areas bordering the Rio Grande do Sul.

During this period, instability tends to lose strength in Santa Catarina, which allows periods of improvement with the appearance of the sun. However, the condition for the occurrence of storms remains present, especially in regions close to the border with Rio Grande do Sul.

Between Thursday, 2nd, and Friday, 3rd, the cold front will continue its movement to the North, positioning itself over Santa Catarina. During this period, the rain gains strength and the risk of storms increases in all regions of the state. There is a condition for intense rain with thunderstorms, in addition to the risk of flooding and occasional flash floods, in addition to roofing and damage to the electrical network.