Norfolk gritters are preparing for their third run of the day and snow ploughs will be deployed later.
Road treatment lorries were out in the county at midnight and again at 4am. They cover 2,000 miles of priority routes in Norfolk and use 200-250 tonnes of salt on each run.
Gritters are preparing to leave for another run by 9am.
The RSPB is urging people to help birds this winter by putting out food and fresh water.
Feeding wild birds throughout winter is vital, but one Norfolk wildlife reserve owner has gone further by hand-feeding a tiny robin.
The MP for Colchester Sir Bob Russell has questioned widespread school closures because of the snow.