Brazil is experiencing severe weather contrasts as heavy rains hit the south while dry conditions persist in the Central-West [1, 2].
These divergent patterns threaten agricultural productivity and public health, as the country manages the simultaneous risks of flooding and drought. The volatility is driven by a combination of a cold front and the influence of a strong El Niño phenomenon [3, 4].
The Instituto Nacional de Meteorologia (INMET) and other meteorologists have issued alerts for the week of June 30 to July 7 [1, 2]. In the South, the region faces a period of intense precipitation and strong winds. Some forecasts indicate the South could accumulate more than 250 mm of rain above the average during the second half of the year [4].
Temperature drops are also expected in the southern regions. Meteorologists said temperatures could approach 0 °C in some areas, increasing the likelihood of frosts [3]. This cold snap is being facilitated by an anticyclone that is affecting both the South and parts of Minas Gerais [3].
Meanwhile, the Central-West region is facing the opposite extreme. Forecasts indicate dry weather and low air humidity [1, 2]. This lack of moisture increases the risk of wildfires, and respiratory issues for residents in the interior of the country.
The current weather pattern highlights the intensifying impact of El Niño on South American climate. The phenomenon typically disrupts normal rainfall patterns, leading to excessive moisture in the south and drought in the north and center of the continent [4].
“The South could accumulate more than 250 mm of rain above the average.”
The simultaneous occurrence of extreme rain in the South and drought in the Central-West demonstrates the destabilizing effect of a 'Super El Niño.' For Brazil, this means a dual economic challenge: managing flood-related infrastructure damage and crop loss in the South while mitigating fire risks and water scarcity in the agricultural heartland of the Central-West.
