Overview

• The national weather service placed Buenos Aires and 11 provinces under yellow alerts for storms between August 30 and September 1, warning of heavy rain, lightning, strong winds and possible hail.
• The Rosario grain exchange and analysts forecast 90–130 mm in the north and northwest of Buenos Aires during the event, with a potential second rainfall pulse expected around September 2–3.
• Local governments are clearing drains, servicing pumps and issuing guidance to avoid flooded roads, secure homes and prepare emergency kits; high mountain passes in Mendoza will close for snow.
• Agricultural reports note roughly 1 million hectares flooded and 2 million with access or saturation issues, putting wheat quality and early maize planting timelines at risk if rain totals verify.
• Parallel severe‑weather alerts are active in Mexico City, where SGIRPC issued yellow and orange alerts and water crews are desilting infrastructure, and in northern Italy, where Lombardy faces red alerts tied to ex‑cyclone Erin with winds up to 90 km/h.