MADRID (Reuters) - Heavy snowfall from Storm Filomena put Madrid and other parts of Spain on high alert on Friday, disrupting traffic and forcing some regions to send out soldiers to clear roads to villages. With up to 20 cm (8 inches) of snow forecast in 24 hours and temperatures hovering around zero centigrade, the south of the Madrid region was on its highest level of alert for the first time since the system was created in 2007. Large parks in the capital, including the famous Retiro next to the Prado museum, were closed as a precaution. “I have come out to see and enjoy the snow. There is very little else to do these days (because of the pandemic),” Juan Jose, 24, a marketing executive, said outside Retiro Park. Troops from the Unit for Military Emergencies helped clear roads and infrastructure across the country, the defence ministry said. Castilla-La Mancha, one of the three regions put on high alert along with Madrid and eastern Valencia, closed schools. Around 280 main roads were affected by the snow, traffic authorities said. Authorities asked citizens to avoid non-essential travel. Airport operator Aena urged passengers to use the subway to get to Madrid airport, and train operator Renfe cancelled some routes. “Perhaps we would have to go back to the snowfall of February 1984 or to that of March 1971 to find similar precedents if the forecasts we are expecting are correct,” Ruben del Campo, a spokesman for the State Meteorological Agency, said.