The Met Office has upgraded its warning for parts of Wales from yellow to amber - meaning 'be prepared'.
Road, rail, air and ferry services could be affected as well as some bridge closures as the remnants of Storm Ophelia are set to hit the British Isles.
There is a good chance that power cuts may occur, with the potential to affect other services, such as mobile phone coverage.
Forecasters say flying debris is likely, such as tiles blown from roofs, as well as large waves around coastal districts with beach material being thrown onto coastal roads, sea fronts and properties.
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Rain clipping the far north through the evening but elsewhere staying dry with some sunny spells.
Public Health Wales figures show 25 more cases of the virus have also been confirmed.
Photos taken on Saturday morning show Roald Dahl Plass strewn with empty beer bottles and discarded canisters of laughing gas.