[REVISION HISTORY]

Weather volatility in Paraná and South America

Updated 8 times since CLSTR started tracking revisions of this situation.

What changed

2026-08-24 16:54 UTC → 2026-08-31 03:24 UTC · added ~~removed~~

By August 23, 2026, weather patterns across South America continued to show extreme divergence. In Argentina, the National Meteorological Service (SMN) issued a yellow alert for extreme cold in Buenos Aires, southeast Entre Ríos, western Santa Cruz, and Tierra del Fuego, including the Malvinas Islands. ~~The alert warns of potential “mild to moderate health risks,” particularly for vulnerable groups such as children, the elderly, and those with chronic illnesses.~~ While much of Argentina faces cold, Salta is bracing for a sharp temperature rise, with maximums potentially reaching ~~38°C and increased fire risks.~~ 38°C. In Bolivia, ~~the situation has escalated as~~ Civil Defense monitors emergencies caused by heavy snow, rain, floods, and strong ~~winds. These conditions have affected~~ winds, affecting tens of thousands of ~~families, as well as significant livestock and crop areas, particularly in Potosí.~~ families. Brazil maintained its pattern of regional extremes. ~~A cold front brought sub-zero temperatures and frost to~~ By August 30, the ~~South, specifically affecting Santa Catarina, Rio Grande do Sul,~~ state of Paraná faced new alerts for storms, heavy rain, strong winds, and ~~Paraná. Meanwhile, parts~~ potential hail. The National Institute of ~~the Center-West face high heat,~~ Meteorology (Inmet) and ~~low humidity alerts remain active across 11 states. In Chile, Santiago~~ Simepar reported that a cold front advancing through southern Brazil is ~~preparing for~~ interacting with a ~~shift toward colder temperatures and increased~~ low-pressure system in Paraguay. Significant rainfall ~~following a brief warm period, while Torres del Paine continues~~ is expected between the West and East regions of Paraná, specifically from Campo Mourão to ~~experience winter conditions~~ Londrina, with daily volumes potentially reaching 50 to 100 millimeters. Wind gusts could range from 60 to 100 km/h, with hail risks in the West and South. In the North, near the borders with São Paulo and Mato Grosso do Sul, gusts between 40 and 60 km/h may cause falling tree branches. Following this instability, temperatures ~~below zero.~~ in Paraná are expected to drop; for instance, Curitiba is forecast to see highs drop from 23°C toward 20°C as weather stabilizes.

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