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Santa Rosa Storm Set to Sweep Central Argentina With Weekend Cyclogenesis

Alerts are in place with peak impacts expected from Saturday night into early Sunday.

Overview

  • Argentina’s meteorological service forecasts a rapidly deepening low that will trigger widespread rain, thunderstorms and possible hail between August 30 and 31.
  • Mendoza, San Luis, La Pampa, Córdoba, Santa Fe, Entre Ríos and Buenos Aires/AMBA are highlighted as the areas with the highest likelihood of severe conditions.
  • Local rainfall could surpass 100 mm and wind gusts may top 50 km/h, with AMBA and La Plata expecting persistent rain that could push Buenos Aires’ August total toward 200 mm.
  • Forecast models differ on Saturday’s exact timing, but guidance indicates deterioration late Saturday and a more intense phase on Sunday before improvement early next week.
  • Authorities issued yellow and orange alerts and advise monitoring updates, avoiding flooded zones, securing loose objects and preparing emergency kits, as Córdoba and Santiago del Estero also anticipate weekend instability.