Argentina Will Experience Heavy Rainfall

It is forecasted that over the next three days, influenced by a cyclonic system (Figure 1), parts of central and northern Argentina, central Chile, central and southern Paraguay, Uruguay, and southern Brazil will experience moderate to heavy rain, with some areas in central and northern Argentina likely to see torrential or extreme downpours. The cumulative precipitation in most of these regions is expected to range from 50 to 90 mm, with localized areas in Córdoba Province exceeding 150 mm (Figure 2). These regions will also be accompanied by severe convective weather, including short-duration intense rainfall. Additionally, some areas will experience strong winds of 6 to 7 gales, with gusts reaching 9 to 10.

Attention should be given to the adverse impacts of strong winds and heavy rain on power infrastructure, transportation, and other industries in the aforementioned regions. Additionally, there is a risk of secondary disasters such as flooding, landslides, mudslides, and urban waterlogging that may be triggered by the intense rainfall.

Figure 1: 500 hPa Geopotential Height (Isopleths) and 850 hPa Wind Field (Wind Barbs) at 1200 UTC, August 31, 2025

Figure 2: Accumulated Precipitation from August 30 to September 1, 2025 (Unit: mm)

Author: Luo Qi                                 Reviewer: Guan Yue 

English reviewer:Wang Yi                                                     Issue approver:Dai Kan