Summer officially begins in Brazil this Wednesday (21), at 6:48 pm Brasília time, and the promise is that the hottest season of the year will have rainfall above the historical average in most of the North, Northeast and Center regions. -West.
In the Southeast, the forecast for the next three months is for above-average accumulated totals in Espírito Santo, in the Triângulo Mineiro region and Belo Horizonte metropolitan area, and in the west and east of São Paulo, according to Inmet.
Summer is characterized by rising temperatures throughout the country due to the relative position of the Earth in relation to the Sun further south, making the days longer than the nights and with rapid changes in weather conditions.
Thus, there are favorable conditions for heavy rain, hail, wind with intensity ranging from moderate to strong and electrical discharges.
In this season, the rains are frequent in practically the whole country, with the exception of the extreme south of Rio Grande do Sul, northeast of Roraima and east of the Northeast, where the total rainfall is generally less than 400 mm, still according to Inmet. .
In the Southeast and Midwest regions, rainfall in this period is mainly caused by the action of the South Atlantic Convergence Zone (SACZ), while in the north of the Northeast and North regions, the Intertropical Convergence Zone (ITCZ) is the main system responsible for the occurrence of rains.
On average, the highest volumes of precipitation can be observed over the North and Midwest regions, with totals in the range between 700 and 1100 mm.
Importance of rains
Meteorologists highlight the importance of summer in Brazil, with its climatic characteristics, with large volumes of precipitation, for economic activities such as agriculture and livestock, energy generation through hydroelectric plants, and for water replacement and maintenance of water supply reservoirs. water at satisfactory levels.
Forecast for summer 2023 in each region
Inmet performs a climate forecast for the period of January, February and March 2023 for each region of the country.
In the North, the forecast is for above-average rainfall, mainly in the northern area of the region, due to the action of the La Niña phenomenon and the pattern of warmer waters near the coast.
In the south of Amazonas and Tocantins, in addition to the southwest of Pará, the forecast is for slightly below average rainfall during the quarter.
The average air temperature should prevail close to the expected climatic conditions for the period, except in some parts of Tocantins and southeastern Pará, with temperatures slightly above average.
In the Northeast, the predominance of above-average rainfall in the region is associated with the impacts of La Niña and the pattern of slightly warmer waters near the northeastern coast.
In areas of Bahia, Sergipe and Alagoas there is a probability of slightly below average rainfall.
The air temperature should predominate close to and above the historical average in a large part of the region in the coming months, except in the north of the states of Maranhão, Piauí and Ceará, where temperatures may be slightly below average, due to consecutive days with rain. .
In the Midwest, only in the south of Mato Grosso do Sul, in the north of Mato Grosso and in the west of Goiás, rainfall totals are forecast slightly below the climatology for the quarter.
As for temperatures, the forecast indicates that they should be close to and slightly above the climatological average in the region.
For the Southeast, forecasts indicate that temperatures should be close to and slightly above climatology in the coming months.
In the South, the forecast indicates a greater probability of rainfall close to and below the climatology in the entire region, as a result of the impacts that the La Niña phenomenon can cause. Temperatures will be close to climatology and slightly above average in the region.
Source: CNN Brasil
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