The cold snap had been forecast and British Rail had claimed to be ready for the coming snow. However, the snow was unusually soft and powdery and too deep to be cleared by snowploughs – it needed snowblowers. The snow found its way into electrical systems and caused short circuits and traction motor damage in trains. For traction motors with integral cooling fans and air intakes pointing downwards – the type that is still common on British electric multiple units – the problem was made worse as the air intakes sucked up the loose snow. Meanwhile, the snow also became packed into sliding door mechanisms and into points, causing them to fail. In addition, low temperatures resulted in problems with electric current collection from the third rail.