The last sunny day was on August 16. The City of Buenos Aires has been five days in a row of greyish darkness. And the outlook for the future is not very encouraging. The bad weather seems to refuse to go away. In addition to the constant clouds in the sky, rain has now appeared and the phenomenon known as cyclogenesis continues. The forecast indicates that the weather will remain more or less the same throughout the week. That means that we will have to continue going out on the street with umbrellas and plenty of warm clothes. Meteorologists explain that this bad weather, similar to a kind of curse, will continue.
The National Weather Service confirms the bad news. It predicts that the storm will continue for another day, also with low temperatures. And that clouds will continue to cover the sky for at least a week. Saturday and Sunday, it seems, will not rain. But it will be like entering a freezer, with minimum temperatures of 2° for Saturday and 1° for Sunday. This is the weather outlook for Buenos Aires, which so far does not seem to include the Sun in its calendar. That is to say, if the forecast is fulfilled, the City will remain dark, under a thick layer of clouds, eleven days in a row. Although there might be some sunshine on Sunday.
According to the SMN’s quarterly forecast for August, September and October, the end of winter and the beginning of spring are expected to be more pleasant. There will be no heavy rainfall and temperatures could be higher than normal.
Cyclogenesis is a common weather phenomenon whose term has become popular in recent weeks. It partly explains the low temperatures and bad weather that Buenos Aires has been experiencing over the past week. The name may seem strange, even apocalyptic. But it happens very often and is part of the climate system like other, better-known phenomena.
Son low pressure points in the atmosphere. They usually arise in stationary or warm fronts. In this case, it began to form in areas such as Chaco or Formosa and then moved southeast, towards Corrientes and Buenos Aires. As the storm moves, the pressure of the cyclogenesis becomes lower as the day goes by, which increases the wind speed, since this is the result of the difference in pressure between the center of the cyclogenesis and the surroundings. “The lower the pressure, the stronger the wind will be,” explains meteorologist Marcelo Madelón.
Within cyclogenesis the winds circulate on an hourly basis. These are phenomena that occur many times a year. “There is nothing unusual about them. What happens is that they are using terminology that is not so common,” says the specialist. This climatic phenomenon usually produces storms in the City of Buenos Aires and part of the Atlantic coast. As the low pressure center moves towards the southeast, it forms rains and storms, which will affect Chaco and Corrientes.
The meteorologist also explained that as it reaches the Río de la Plata, it will cause strong winds in the City of Buenos Aires and in the southern area of the Province of Buenos Aires. If the wind comes from the southeast, it could also cause a rise in the waters of the Río de la Plata, because the strong wind produces tides.
Madelón added that the low temperatures are caused the cold, humid air coming from the southeast, driven by a high pressure center located in Patagonia. “Cyclogenesis, as it is a low pressure center, causes the entry of this cold air that comes from the south.”
