A "weather bomb", is forecast to batter the British Isles over the weekend, bringing heavy rain and gale force winds, becoming the second named storm of the season.
The UK Met Office has issued a Yellow alert for the same a spell of strong southwesterly winds on Saturday.
The wild conditions, caused by a "weather bomb" over the Atlantic Ocean, may cause coastal flooding and affect transport, the Met Office has warned.
A yellow weather warning for rain has been issued across the region, valid from 3pm to midnight.
Some transport disruption was "likely", with delays to road, rail, air and ferry transport all possible, the warning added.
"Through Saturday, there will be blustery rain and widespread wind gusts of 50-60 miles per hour across southern Ireland, Wales and parts of England", AccuWeather meteorologist Steve D Travis told media.
"At the moment, we don't expect the same level of impacts for the United Kingdom", he said.
"The first and most significant land-based impacts will be in the south-west of Ireland, hence the amber warning from Met Éireann".
People battle the waves and high wind at Lahinch in County Clare on the West Coast of Ireland as Storm Ophelia hits.
"Gusts exceeding 50mph are expected widely within the warning area, with gusts of around 70mph along exposed coastal areas".
The remnants of Hurricane Ophelia killed three and damaged homes in Ireland, Wales and parts of England after unleashing torrential rain and blistering gusts.
"Weather bomb" may sound dramatic, especially in the wake of recent storm coverage, but it is a technical term, referring to low pressure system whose central pressure falls rapidly. "These are expected to coincide with high tides, leading to locally unsafe conditions in coastal parts".
Brian will move across Ireland, Northern Ireland and Scotland into Saturday.