After sunny days, storms return to the states of Rio de Janeiro and São Paulo. According to warnings published by the National Institute of Meteorology (Inmet), the formation of a new cold front — intensified by an elongated area of low pressure — brings instability to the region, which could experience rains with volumes of up to 100 mm/day, in addition to intense winds, capable of reaching 100 km/h. The maximum is 35°C for the capital Rio de Janeiro and 26°C for São Paulo.
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— We call this “elongated area of low pressure” a trough, which is nothing other than a cyclone that formed in the coastal region of the south and southeast of Brazil, — explains meteorologist Andrea Ramos, who excludes any relationship between the current phenomenon and the extratropical cyclone.
— Spring favors the formation of these low pressure centers, which causes an increase in storms in the areas where it operates.
In addition to storms, there is also a risk of hail in the south of the country. Large amounts of rain, which will persist until Sunday, are expected over northern Rio Grande do Sul and northeastern Paraná. Thermometers indicate a maximum of 31°C in Porto Alegre (RS) and 22°C in Curitiba (PR).
In the north, heat and high humidity favor the appearance of rain showers in the states of Pará, Rondônia and Amazonas. Cities like Manaus (AM) and Porto Velho (RO) will experience maximum temperatures of 34°C and 30°C, with a cumulative rainfall of 50 mm/day.
Rains also persist in the Center-West region, particularly in Mato Grosso. With storms forecast for the entire weekend, the state is under the influence of the ZCAS, a cloud corridor responsible for heavy precipitation. The maximum is 34°C in Cuiabá (MT), 31°C in Goiânia (GO).
In northeastern Brazil, low relative air humidity will be present in regions such as Rio Grande do Norte, Pernambuco and Alagoas, which may cause feelings of discomfort and dryness. In Natal (RN), Recife (PE) and Maceió (AL), the maximum temperature reaches 32°C, with no risk of rain.
— What is happening in the Northeast is worrying because it is raining throughout the country, but, precisely within the Northeast region, where the semi-arid region is located, we have no forecast of rain. The weather remains hot and dry, Andrea reflects.
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The recommendation of the National Institute of Meteorology (Inmet) is that the population avoids facing bad weather, observes changes in slope and, if possible, turns off electrical appliances and the general energy supply. The Institute also leaves a series of instructions for residents of areas that could be most affected by the rains. Look:
- Turn off electrical appliances and the general power supply;
- Observe changes in slope;
- Stay in a sheltered area and, in case of gusty winds, do not take shelter under trees, due to the slight risk of falling and electric shock, and do not park vehicles near transmission towers and advertising signs;
- In case of flooding or similar, protect your belongings from water by packing them in plastic bags;
- Obtain more information from Civil Protection (telephone 199) and the firefighters (telephone 193).
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