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MetSul Meteorologia warns that this last day of the year will be marked by storms in the Central-South of Brazil with the displacement of a cold front by the three southern states and that it will reach the southeast and midwest of the country still on Thursday. Some heavy to severe storms with potential for damage should be expected.
TIME | Barra do Chuí, in the extreme south of Rio Grande do Sul, with lightning @fabricio_galant. pic.twitter.com/enYs2c8zmq
– MetSul.com (@metsul) December 30, 2020
The front has already begun to enter Rio Grande do Sul and tonight it acts in the West, in the Center and in the South of Rio Grande do Sul. At the beginning of this farm, the front advances rapidly and reaches all of Rio Grande do Sul. Sul. Due to the very rapid advance towards the north, the system changes the climate with rains and storms between the morning and the afternoon in Santa Catarina and Paraná, arriving in São Paulo and Mato Grosso do Sul.
TIME | The cold front will cross very quickly on this farm through the northern half of Rio Grande do Sul and Santa Catarina. pic.twitter.com/gIjxTxXhSH
– MetSul.com (@metsul) December 30, 2020
One concern in the advance of this front is its very rapid movement. This generally favors wind storms with the formation of an organized storm line. That is exactly what MetSul’s WRF model (map) projects. This line would be more intense between the northern half of Rio Grande do Sul and Paraná, regions with the highest risk of strong storms. Some single gales can be very strong with intense gusts.
In the front passage there is still the risk of locally heavy or intense short duration rains and isolated hail, but in general the rainfall tends to be very irregular and with low volumes in most locations.
Some of the storms in São Paulo and Mato Grosso do Sul, due to the tropical air, can also be strong in some places.
In Rio Grande do Sul, the weather begins to improve with the sun on this farm and the New Year holidays will have a predominance of the sun.
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