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MetSul warns that on Sunday it will be very windy in several regions of Rio Grande do Sul. This Saturday it was already windy in several regions with gusts of up to 70 km / h in the north of Rio Grande do Sul and this Sunday the weather continues with wind and which tends to intensify in some areas. At the beginning of the day, the wind blows in most of the State between 30 km / h and 50 km / h with higher isolated gusts, but during Sunday, especially between afternoon and night, it gains strength in the Center, South and this. of State.
The strongest gusts should occur in the south of Rio Grande do Sul, in the Lagoa dos Patos area and its surroundings and in the coastal strip (Litoral) with gusts between 60 and 80 km / h. These areas with the highest risk of strong winds include the Porto Alegre area, where the wind from the eastern quadrant is likely to show higher intensity in the second half of Sunday.
The reason for the wind storm in Rio Grande do Sul has nothing to do with a cyclone or storm. It is a consequence of the great difference (gradient) in atmospheric pressure and temperature with a high pressure center associated with the cold air mass that moves from the center of Argentina towards the Atlantic and a thermal drop between the north of Paraguay and Mato Grosso do Sul. Associated with very hot air.
Disorders such as falling trees, lack of light and the fall of more fragile structures can occur. Due to the rain, which persists more in the south and east of Rio Grande do Sul during this Sunday, especially in the second half of the day, which makes the soil more unstable due to water saturation, the moderate to strong wind increases enormously the risk of falling trees. .
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