High seas and coastal flooding are expected, with gusts of up to 130km/h or higher.
A Status Yellow Wind Warning was issued this morning for the whole country.
The first storm of 2019 is to whip across Britain on Friday, bringing with it winds of up to 60mph and weather warnings.
A further weather warning has now been issued for four counties, this one being a rainfall warning.
It will be valid from 5am and remain in place until 1pm in the afternoon.
Severe gusts of up to 130km/h are expected, with average wind speeds of up to 80km/h.
A deep area of low-pressure will track northeast across Britain through Friday and Saturday, with strong winds and gales battering parts of Northern Ireland, northern England and Scotland.
Delays for high-sided vehicles on exposed routes and bridges are also likely, while heavy rain could see flooding in some parts.