Overview
- The Servicio Meteorológico Nacional issued multiple yellow-level alerts for storms and persistent rain for Saturday 17 October covering provinces including Córdoba, parts of La Rioja and sections of the Patagonian cordillera.
- Córdoba was warned to expect persistent moderate to locally heavy rain with accumulated totals of about 20–40 mm and the possibility of embedded thunderstorms in some areas.
- Mendoza authorities and the SMN forecast marked instability through Friday and Saturday with potential heavy rain in lowlands and weak snow in the high cordillera before conditions begin to stabilize.
- Local civil-protection offices already issued site-specific warnings such as in San Luis Río Colorado, where officials cautioned about gusts up to 55 km/h, tolvaneras (dust storms) and gave safety advice for residents and drivers.
- Meteorologists link the prolonged humid, unstable weather to an atmospheric block reinforced by El Niño, and they say the breaking block should bring a short improvement by Sunday 18 October while regional forecast differences mean local risks will continue and residents should follow municipal guidance.