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7h ago

Santa Rosa’s Feast Revives a Storm Tradition as Scientists Emphasize Seasonal Weather

Meteorologists say the late‑August squalls reflect shifting air masses, not a fixed annual event.

Image
En su día, Santa Rosa salió a la cabeza en la Quiniela.
La tormenta de Santa Rosa debe su nombre a una fecha religiosa. 
La historia de Santa Rosa de Lima se entrelaza con un fenómeno climático que aún hoy asombra al hemisferio sur. Foto: Gentileza

Overview

  • Argentina’s meteorological service and CIMA researchers describe the pattern as warm, humid air meeting lingering cold fronts, a setup that often triggers strong storms near the end of winter.
  • Long‑term records from the Observatorio Central Buenos Aires show storms occurred between August 25 and September 4 in 57% of years from 1906 to 2024.
  • In 2024, a low‑pressure system over the Pampas generated rain and thunderstorms that aligned precisely with August 30 across several Argentine provinces.
  • The Catholic Church placed Santa Rosa de Lima’s liturgical celebration on August 30 at her 1671 canonization, cementing the calendar date tied to the custom.
  • The popular legend traces the association to 1615, when prayers attributed to Santa Rosa coincided with a storm said to have thwarted Dutch corsairs, a belief later rooted across Argentina, Uruguay and Paraguay.