More than 150 flights from Germany's largest airport, Frankfurt, have been cancelled as snowfall continues. Many passengers were left stranded in the airport as snow ploughs attempted to clear runways. In Nuremberg, one plane slid off the runway.<br/><br/>A blizzard is forecast to hit the country soon and people have been advised to stock up on enough essential supplies to last up to four days. Many other countries across Europe have also been hit by the bitter conditions. Nearly 140 people have frozen to death in the past few weeks in Poland, and in Switzerland, heavy snow has cut the flow of lorries through Alpine tunnels.<br/><br/>In the UK, the worst winter for decades has led to a fear for energy supplies as temperatures dropped as low as -22C in some parts. British Airways cancelled 54 flights from Heathrow today. <br/><br/>In the Netherlands, icebreakers have been deployed to clear shipping routes such as the Twente canal, the harbours of Almelo and Enschede and the Ijsselmeer inland sea.<br/><br/>Northern Spain is expecting more heavy snowfalls while the country's south has been hit by severe floods. France is also braced for more snow. Meteo France warned the amount of snow expected was significant, exceptional even.