What is an extroatropical cyclone and why does it happen?
CICLON BUENOS AIRES
It is expected by the passage of an extroatropical cyclone through Buenos Aires. Graph: Meteored.
Extropical cyclones are low pressure systems that are formed outside tropical areas, usually in middle latitudes. They are developed by the encounter of warm and humid air with cold and dry air, which generates atmospheric instability, abundant rainfall, strong bursts of wind and a marked thermal descent.
In this case, the Cyclone was formed on the Atlantic Ocean, east of Patagonia, and is moving to the north strongly. These types of phenomena are common in autumn and winter, when thermal differences between air masses intensify. However, the intensity of the current system makes it a significant weather event.
Affected areas and rain forecast
The National Meteorological Service (SMN) issued yellow and orange alerts for several provinces, including Buenos Aires, Río Negro, Chubut, La Pampa, and part of the south of Córdoba and Santa Fe. They are foreseen accumulated of rain that could exceed 100 millimeters in less than 48 hours, winds with bursts of up to 80 km 0 ° C in areas of the south and center of the country.
In the city of Buenos Aires and the Conurbano, persistent rains, isolated chaparrons and progressive cooling are expected, with maximum temperatures that would not exceed 14 ° C during the weekend.
Recommendations of the National Meteorological Service
Mar del Plata Storm.jpg
Rains, storms and strong winds.
The authorities recommend the population to remain informed through the official channels of the SMN and Civil Defense, avoid unnecessary displacements in the most affected areas and take precautions to possible light cuts, fall of trees or flooding.
These types of phenomena, although natural, are a sample of the impact that climate change can have on the intensity and frequency of extreme events. Specialists warn about the importance of having contingency plans and being attentive to the evolution of forecasts.
