The Spanish government will send convoys carrying the COVID-19 vaccine and food supplies on Sunday to areas cut off by Storm Filomena which brought the heaviest snowfall in decades across central Spain and killed four people.
In the Madrid area, rescuers reached 1,500 people trapped in cars, while police broke up a large snowball fight after authorities appealed for citizens to stay at home for risk of accidents or spreading coronavirus.
Forecasters warned of dangerous conditions in the coming days, with temperatures expected to fall to up to minus 10 Celsius (14 Fahrenheit) next week and the prospect of snow turning to ice and damaged trees falling.
In Madrid, police cordoned off buildings with heavy loads of snow on the roof in case of accidents, but residents took to the streets in droves to enjoy the rare sight of their city blanketed in white.
About 100 workers and shoppers have spent two nights sleeping at a shopping centre in Majahaonda, a town north of Madrid, after they were trapped by the blizzard on Friday.
"There are people sleeping on the ground on cardboard," Ivan Alcala, a restaurant worker, told TVE television.
Madrid's international airport suspended flights until Sunday night.