It's in place for Westmeath and Longford until 11 am.
Parts of the Midlands are under a Status yellow fog warning.
It's in place for Westmeath along with Longford, Connacht, Donegal, Cavan, Louth, Meath and Monaghan until 11 o'clock this morning.
Met Eireann is warning of poor visibility and difficult travelling conditions.
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