The health minister Mark Drakeford has said the ambulance service must meet the challenges it faces. It comes after ITV News revealed last night that long lines of ambulances were waiting outside Wales' biggest hospital - The University hospital of Wales.
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An Amber weather warning has been issued for Conwy, Denbighshire, Flintshire, Gwynedd, Isle of Anglesey, Powys, Wrexham and Ceredigion.
Storm Doris will bring a squally band of rain at first with disruptive gales, especially further north.
Winds will strengthen to gale force by dawn, these severe across exposed coasts and hills particularly in the southwest.