Frost and sub-zero temperatures hit Santa Catarina's highlands, freezing cars
Santa Catarina's highlands experienced severe winter conditions on Tuesday, July 7, 2026, with sub-zero temperatures and widespread frost covering vegetation. Urupema, known as the National Cold Capital, recorded the state's lowest temperature at -2.75°C. Nearby Bom Jardim da Serra registered a low of -2.6°C, while São Joaquim saw temperatures drop to -1.89°C, causing cars to freeze over. Frost, a common occurrence in the state's higher elevations due to reduced temperatures and high humidity, forms a layer of ice on surfaces. Even the capital, Florianópolis, experienced cooler morning temperatures, with the Carijós station recording 12.03°C, and Criciúma in the south registered a low of 4.88°C. The cold snap is attributed to a dry and cold air mass advancing across Southern Brazil. The Civil Defense has warned of moderate risks, including hypothermia, exacerbation of respiratory and cardiovascular conditions, thermal discomfort, and potential for icy road surfaces.
The event highlights the predictable impact of atmospheric conditions on regional climate extremes, particularly in elevated terrains. While frost is a recurring phenomenon, its intensity and associated risks, such as hypothermia and infrastructure impacts like frozen roads, underscore the importance of robust public health and emergency preparedness systems. As climate patterns evolve, understanding and mitigating the effects of such cold spells will remain critical for community resilience and safety in vulnerable regions. The data presented offers a clear snapshot of meteorological conditions and their immediate consequences, prompting a review of adaptive strategies for future occurrences.
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