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SMN Warns of Santa Rosa Cyclogenesis for Aug. 30–31 Across Central Argentina

SMN forecasts a late‑August cyclogenesis bringing short, intense downpours with severe convective hazards across central Argentina.

La tormenta de Santa Rosa llegará en la fecha que estipula su tradición
Mapa de lluvias.
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Overview

  • Official alerts anticipate 40–70 mm of rain in a few hours with strong wind gusts, hail and intense lightning as the system develops.
  • La Pampa, Córdoba, Santa Fe, Entre Ríos and Buenos Aires are cited as the primary provinces at risk, with peak impacts expected from Saturday night into Sunday.
  • The Buenos Aires Grain Exchange reports a very irregular rainfall pattern concentrating over the center‑east of the farm belt, leaving other areas with scant totals.
  • The exchange cautions that such unevenness could presage a disturbed spring–summer growing season, urging producers to step up short‑term monitoring.
  • An SMN study of 1906–2024 records finds storms near Aug. 30 in about 57% of years, including a notably intense Aug. 30–31, 2024 event that delivered 118 mm in Buenos Aires.