Overview
- Spain’s AEMET activated a yellow alert for snow in the Sierra and Metropolitan/Henares areas of Madrid on Monday, with subzero lows regionwide and up to 5 cm of accumulation in higher terrain.
- Meteogalicia and AEMET issued yellow alerts in Galicia for extreme cold overnight in interior Ourense (down to -6°C in mountain areas), with additional coastal warnings for strong northerly winds and rough seas later Monday.
- AEMET signaled that 6 January could be one of the coldest Epiphanies in roughly four decades, as an Arctic air mass grips the northern half of Spain and risks affecting holiday parades and travel.
- Mexico’s weather service forecast the arrival of Cold Front No. 26 into the north and northeast, bringing minimum temperatures of -5 to 0°C and frost to Nuevo León during the early hours of Sunday.
- Argentina’s SMN maintained an orange heat alert for San Juan with temperatures in the mid‑30s Celsius and posted yellow storm alerts for Tucumán, Catamarca, Salta and Jujuy, warning of hail, intense lightning, brief heavy rain and gusts up to 70 km/h.