Fresh weather maps show a sweeping band of snow stretching over 600 miles from northern Scotland down to the south coast of England overnight between March 4 and March 5. Maps from forecaster WXCharts show a north-to-south corridor of wintry showers running from around Aberdeenshire through the Midlands and into parts of the South West. Measuring from the northernmost significant accumulations near Aberdeenshire down through the spine of Britain to Devon and the south coast, the snowy stretch spans around 650 miles. While not continuous everywhere, the wintry corridor runs in a broad arc across much of mainland Britain. The snow depth chart shows 20 counties with measurable snow cover. The most affected parts will, as usual, be in Scotland, particularly in central parts. The ECMWF chart shows depths up to 52cm, slightly north-west of Dundee and west of Aberdeen. More surprisingly, snow is also shown further south across parts of the West Midlands, Devon and even Hampshire, where lighter coverings of around 1–2cm appear on the map. While the lowest temperatures are set to …