Adolfo Suarez Barajas airport is pictured during a snowfall in Madrid, Spain, January 9, 2021. Heavy snowfall from Storm Filomena left hundreds of drivers trapped in their cars on Friday (January 8) as roads were blocked and Madrid airport was closed. REUTERS/Juan Medina

Stranded passengers wait for news about their flights at Adolfo Suarez Barajas airport, which is suspending flights due to heavy snowfall in Madrid, Spain, January 9, 2021. The M-30 and M-40 motorways near Madrid were among more than 400 roads affected by the snow, traffic authorities said. Citizens were asked to avoid non-essential travel. REUTERS/Susana Vera

A person observes parked planes at Adolfo Suarez Barajas airport, which is suspending flights due to heavy snowfall in Madrid, Spain, January 9, 2021. A record temperature of -35.6C was recorded at Vega de Lourdes in Leon, northern Spain, the State Meteorological Agency (Aemet) said. REUTERS/Susana Vera

Stranded passengers lie on the floor as they wait for news about their flights at Adolfo Suarez Barajas airport, which is suspending flights due to heavy snowfall in Madrid, Spain, January 9, 2021. REUTERS/Susana Vera

Stranded passengers wait for news about their flights at Adolfo Suarez Barajas airport, which is suspending flights due to heavy snowfall in Madrid, Spain, January 9, 2021. REUTERS/Susana Vera

An airport worker sits on the wheel of a parked snow-covered plane as one of his colleague takes a picture of another coworker lying on the snow at Adolfo Suarez Barajas airport, which is suspending flights due to heavy snowfall in Madrid, Spain, January 9, 2021. REUTERS/Susana Vera