Low Over Paraguay to Trigger Mid‑Week Storms Across Brazil's Centro‑Sul

Overview

• Meteorological agencies say the weather shift will begin mid‑week with a strengthening low centered over Paraguay that should expand instability on Wednesday and especially Thursday.
• Forecasts project locally extreme rainfall through Sunday, with totals up to about 300 mm in some areas of the South and roughly 100 mm in parts of the Southeast, concentrated in intense, short‑duration storms.
• Forecasters expect temporais with strong gusts, isolated hail and high runoff that could cause urban and regional flooding and damage to crops where rain falls hardest.
• A recent polar intrusion left unusually low October morning temperatures in Paraná and other southern areas, and Simepar and Inmet continue to warn of frost in higher serras into the weekend.
• The North and Northeast will remain hot with isolated storm alerts in places such as Acre and Rondônia, and agencies say forecasts are model‑dependent so residents should monitor local warnings through Sunday, October 25.