Two orange alerts for snow and ice have been issued.
All of Connacht, along with Cavan, Donegal, Monaghan, Clare, Longford, Louth, Meath and Westmeath, are subject to an Orange level Snow/Ice warning from now until 10 am tomorrow.
Tonight, counties Carlow, Dublin, Kildare, Kilkenny, Laois, Offaly, Wexford, Wicklow and Tipperary are under an orange alert from 9pm to 10 o'clock tomorrow.
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10 centimetres of snow are being forecast for some areas.
Met Eireann's Liz Walsh says there's already been wintry showers and snow across the country:
