Overview

• SMN projects rain beginning Friday 29 August in La Pampa, Río Negro and Neuquén, expanding north and east through Saturday 30 and Sunday 31.
• Buenos Aires/AMBA is expected to see showers and thunderstorms from Saturday afternoon into Sunday night per SMN, with a cyclogenesis signal around Saturday highlighted by Meteored.
• Accumulations of roughly 40–70 mm are being cited for central regions, with locally higher totals that could exceed 100 mm in parts of the center and Buenos Aires/La Plata according to specialized forecasts.
• Mendoza authorities forecast colder conditions with abundant rain, strong southerly winds and snow in the Andes from 29–31 August, and have issued provincial advisories.
• Officials advise monitoring SMN updates as timing and maxima may shift; historically, storms near 30 August occur in 57% of years at the Observatorio Central Buenos Aires.