Overview

• Authorities announced a preventive closure for Wednesday, 20 August, halting traffic in both directions for all vehicle types due to forecast snowfall.
• The corridor reopened Tuesday at 08:00 in Chile and 09:00 in Argentina for all vehicles under winter hours with mandatory tire chains after a 24-hour lull.
• Binational coordinations cautioned the window would be short as forecasts indicate precipitation returning from Wednesday and intensifying on Thursday.
• The national meteorological service issued a yellow alert predicting 30–50 cm of snow with potential strong winds and whiteout conditions.
• Travelers are urged to monitor @UPFronterizos and @CFLosLibertador for real-time updates, and Paso Pehuenche remains an alternative with limited daytime hours.