The weather forecast indicates instability in several regions of Brazil this Sunday (12), with an increase in rain showers moderate to strong intensity and risk of isolated thunderstorms.
The day faces the formation of heavy clouds especially between areas of South, Southeast and Midwestin addition to the chance of high rainfall accumulations in parts of the Northeast.
In most of the southern regiontemperatures do not rise much, but heavy rains are expected to persist in the interior and coast. Moderate to strong showers and isolated storms appear early in the west and south of the region, and the rain is expected to intensify throughout Sunday in Paraná and the interior of Santa Catarina. In Rio Grande do Sul, it loses strength in some areas, but continues with rain on the coast.
Not Southeast, in coastal and interior areas with varying intensity and temperatures are expected to rise in the afternoon. Residents of Espírito Santo and the north of Minas Gerais can expect rain from early on, with showers increasing throughout the day. In the west of São Paulo and Triângulo Mineiro, there is moderate to heavy rain. In other areas, the weather should continue with less instability.
The forecast for the central-west indicates firm weather in the DF and east of Goiás, with showers from early in the morning in Mato Grosso. In Mato Grosso do Sul, Mato Grosso and Goiás, instability intensifies throughout the day, with and risk of isolated storms.
In the Northeast, the weather remains sultry and on the coast and inland. On the coast of Bahia and between RN and PE, the rain starts early and intensifies across much of the region, with a risk of storms. In Sergipe and Alagoas, the rain is lighter.
The north of the country faces intense rain and isolated thunderstorms in almost the entire region, with muggy weather and high temperatures. Rain is expected to occur early in the morning and intensify throughout Sunday in almost the entire region, with a risk of isolated thunderstorms, especially in Amapá.
ZCIT remains active in the North and Northeast
The ITCZ (Intertropical Convergence Zone) remains active near the north coast of Brazil, being responsible for instability in areas of the North and Northeast of the country.
This is a meteorological system that keeps the atmosphere humid, favoring frequent rain showers, with high accumulations. The presence of the ZCIT is typical of this time of year and tends to concentrate the most intense rains in the equatorial belt of Brazil.
The influence of the ITCZ should persist in the coming days, mainly along the coast between Ceará and Maranhão, including cities such as Fortaleza and São Luís, where higher accumulations should appear.
The interior of the Northeast is also expected to be affected, with rain in areas of the hinterland of Rio Grande do Norte, Paraíba, Ceará, Piauí and Maranhão. The showers can occur with moderate to strong intensity, accompanied by lightning and gusts of wind.
In the north, instability continues on the coast of Pará and Amapá, including Belém and Macapá, with accumulations that could reach 130 mm by April 19 in these areas. Volumes must also be high within these states, and may even exceed 100 mm.
At the beginning of April, high volumes were already recorded: according to INMET (National Institute of Meteorology), capitals such as São Luís (MA) and Macapá (AP) already accumulated around 175 mm of rain in the first nine days alone, almost half of the climatological average predicted for the entire month.
The pattern of instability caused by the ITCZ is expected to continue at least until the end of April.
