Overview
- The Servicio Meteorológico Nacional issued yellow alerts for rain, snow and high winds for Monday, October 19, covering about ten provinces and advising people to avoid travel in low-lying areas, secure loose objects and prepare for snow and ice in mountain zones.
- SMN forecasts show the Buenos Aires metro area temporarily stable with near-zero rain probability but several private models and outlets project scattered storms could return by midweek, creating forecast uncertainty that authorities and the public should monitor.
- Heavy snowfall is expected again over the highest Andean peaks in Mendoza, San Juan, La Rioja and Catamarca with possible accumulations that could reach tens of centimetres on the cordillera and require readiness for icy roads and roof loading.
- In Spain, AEMET-based local forecasts predicted clear, dry weather across many Galicia municipalities for October 18–19 while Aemet placed Córdoba city under a yellow alert from midday Monday for heavy rain and thunderstorms with high short-term accumulation risk.
- October has shown sharp regional contrasts — an early-month 12-day rainfall streak and late agronomic frosts in central Argentina versus unusually warm pockets in Patagonia — which heightens the potential agricultural and transport impacts if the midweek pattern shifts.