York and Leeds are set to be hit by floods this week as those in severely hit areas are advised to pack a bag and prepare to evacuate their homes. The melting snow is expected to top up the heavy rain set to sweep in at the beginning of next week, creating a deluge which is likely to cause rivers running through Yorkshire cities to overflow. This deluge comes after many parts of England were hit by deep snowdrifts, blanketing the country in white and causing travel disruption. The Ouse in York is set to swell further, putting properties and businesses at risk, and in Leeds, the Aire has been singled out as a potential flood risk for next week. Martin Christmas, the Environment Agency Operations Manager warned that tens of thousands of people in Yorkshire cities could be impacted by incoming floods. Standing in his sodden garden, among lumps of melting snow, he said: "As you can see, the thaw is here, so we have snowmelt topping up the rivers across Yorkshire, and more importantly we have a system of frontal rain coming through on Tuesday morning. "We are likely to be issuing a number of flood warnings and the flood event duration is likely to last through to Thursday. Starting to the pennine catchments to impact on the lower rivers including the River Ouse in York, the Lower Don and the Aire. If you are part of the flood warning service please keep an eye on the alerts we will be issuing." The Met Office has said that those who live in an area with severe flood risk should pack a bag in case they have to evacuate at short notice. Those concerned about flood warnings where they live should sign up to Environment Agency updates. The Met Office has issued a yellow rain warning for Monday evening, lasting until Wednesday. The warning, which covers parts of north-west England and large swathes of Wales, says there could be a "danger to life" from possible "fast flowing or deep floodwater". Such conditions could bring delays to public transport, damage to buildings or power-cuts, the Met Office said. Craig Snell, a Met Office forecaster, said: "Around 30-60mm of rain could be seen in the worst affected regions, with 200mm in the most hilly areas. "This could cause some snowmelt flooding issues, so people are advised to be very careful when travelling to work."