Hospital staff have been praised for battling against the elements to get to work to enable operations and appointments to be carried out as planned.
Sheffield Teaching Hospitals NHS Foundation Trust, which runs the Royal Hallamshire Hospital, Northern General Hospital, Charles Clifford Dental Hospital, Weston Park Cancer Hospital and the Jessop Wing Maternity Hospital, said operations and appointments are largely taking place as planned.
A spokeswoman said: "Appointments and operations are taking place as normal at Sheffield Teaching Hospitals today thanks to the tremendous efforts of all our staff. If we have to change any appointments, we will contact patients affected directly.
"However we appreciate that patients may not be able to travel today and we want safety to be the priority for everyone. If patients do not feel able to attend their appointment or operation we would just ask them to call the number on their appointment letter to let us know as early as possible.
"Our community staff are continuing to make their essential visits today but many are having to do this on foot and so we are asking people to bear with us as there may be some delays. Where they are unable to visit, they will make telephone contact with patients to offer support."