Overview
- The cold wave reached its peak after Wednesday's official station rankings showed La Quiaca near −10°C, a reading also reported locally as −10.4°C.
- Earlier observations and model guidance put Mendoza locations among the extremes, with Uspallata recording about −10°C and Malargüe about −7.9°C.
- National data compiled from roughly 110 meteorological stations found at least 20 sites registering temperatures below zero on the morning of the peak.
- The Servicio Meteorológico Nacional and ECMWF model guidance indicate continued low nighttime minima through June 24–28 for parts of the country with gradual moderation toward the weekend.
- Widespread frosts across northern, Cuyo and Patagonian regions raise short-term risks for agriculture, local transport and heating demand as communities cope with the prolonged cold.