The Welsh Ambulance Service is urging Welsh residents to use the emergency services appropriately in the extreme weather.
The trust is taking extra precautions to ensure it can continue to help patients during the adverse weather by making its 4X4 vehicles available, topping up stocks of salt at ambulance stations, and by working with other emergency services such as the Brecon Mountain Rescue Team to get to patients.
Ambulances are fitted with winter tyres which work more efficiently on snow or ice, and front-line staff have been equipped with ice cleats to help them stay on their feet while responding to an emergency.
Non-essential journeys have been cancelled in some areas today and there were some cancelled yesterday, however all affected patients have been contacted.
The Non-Emergency Patient Transport Service is continuing to respond to urgent non-emergency patients with renal and oncology appointments, as well as patient discharges.
Patients whose non-emergency journeys have not been cancelled are advised to bring essentials like medication, food and money with them to appointments.
Anyone with a query about their non-emergency transport can call 0300 123 23 03.
A spokesperson from the Welsh Ambulance Service said: “We are closely monitoring the weather forecast for Wales and have contingency plans in place and underway to deal with the adverse weather conditions.
“We are well prepared to deliver the same high standard of care to the people of Wales, but inevitably when it is snowy or icy our responses may take longer.
That’s why it’s important that members of the public only call us in a genuine, life-threatening emergency.
“There are a host of alternatives to 999 and the Emergency Department.
If you’re ill and unsure what to do, take one of the many NHS Direct Wales online symptom checkers for tailored advice.
“You can also call the service on 0845 46 47 for 24/7 health advice and information. Ambulances are for serious and life-threatening emergencies only.”