A decrease in air humidity reduces cloud formation and the chance of rain.
A large high pressure system is strengthening over Brazil, leaving much of the country with dry air. The drop in humidity in the air reduces cloud formation and the possibility of rain. Temperatures are rising across the country. Increased heat and decreased humidity tend to increase the risk of fires.
Sea winds carry much moisture east of the southern region, east of the southeast, and northeast of Brazil. An area of low atmospheric pressure over the ocean influences eastern Rio Grande do Sul.
A large mass of dry air strengthens over Brazil (Getty Images)
Southern Region
An area of low atmospheric pressure on the coast of Rio Grande do Sul stimulates rain clouds over that state and also in southern Santa Catarina.
This Wednesday, Rio Grande do Sul and Santa Catarina will have sunny periods, but still very cloudy. Some Rain showers may occur in the mountains and on the southern coast of Santa Catarina, in the mountains, on the plateau and on the coast of Rio Grande do Sul and also in Greater Porto Alegre. The rains that will occur will be light to moderate in intensity and will not cause any inconvenience to the population.
In the state of Paraná the sun appears strong with some clouds, but no rain is expected.
Beware of fog formation in the early morning hours in Greater Curitiba and eastern Paraná, in the Itajaí Valley, in south-central Rio Grande do Sul.
South-East Region
Dry air already prevails in the interior of the southeastern region of Brazil. In almost all areas of the state of São Paulo and Minas Gerais, this Wednesday is with strong sun and few clouds. Despite the cold dawn, the afternoon is warm and with little humidity in the air.
Cold sea winds reach the east of the southeastern region spreading a lot of humidity over eastern São Paulo, Rio de Janeiro and Espírito Santo. That’s why eastern São Paulo and the coast of Rio de Janeiro are still very cloudy, but the sun is coming out.
Espírito Santo also has sunshine, but it can rain a little with light intensity.
Midwest Region
One a large mass of dry air is strengthening in the interior of Brazil and already affects the central-western region of the country. Low air humidity inhibits cloud formation. The entire region has a Wednesday with strong sunshine and few clouds. The dawn and sunrise are a bit cold, but the air warms up quickly and it is hot in the afternoon, with temperatures above 30 degrees in almost the entire region.
Be aware of low humidity levels, which should range from 21 to 30% during the hottest hours of the day in most of the Midwest. In northern Mato Grosso, relative humidity can be slightly below 20%.
Northern Region
OR Dry air predominates over the northern region of Brazil, inhibiting the formation of clouds and the occurrence of rain. Almost the entire region has a day with strong sunshine and high temperatures in the afternoon.
The state of Tocantins and southeastern Pará are expected to be among the driest areas of Brazil this Wednesday. ThenHumidity levels in the air can be just below 20%.
Showers and sunny periods are expected in the northern Amazon, northwest and coastal Pará and Amapá. There is a risk of heavy rain in Roraima.
North-East Region
Moderate sea winds spread a lot of moisture over the east of the northeast. In eastern Rio Grande do Norte and Paraíba, in Pernambuco, Sergipe, Alagoas, on the coast of Bahia, in Chapada Diamantina and in northern Bahia, the sun appears this Wednesday, but between many clouds. Some rain showers can occur at any time of the day, but generally with light to moderate intensity.
Pay attention to the risk of moderate to heavy rain on the coast of Alagoas. On the coast of Bahia, Sergipe and Pernambuco, rains are more frequent and can occur with moderate intensity.
This Wednesday is with strong sun and few clouds in Maranhão, Piauí, Ceará, the São Francisco Valley and western Bahia. In many areas of these regions during the hottest hours of the day, humidity levels between 21% and 30% should be observed.
Source: Terra
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