A red weather warning has been issued by the Met Office, prompted by the incoming Storm Eunice.
The forecasting service upgraded the warning earlier today (Thursday) from amber, as the storm is scheduled to hit tomorrow (Friday).
The warning is in place from 7am till 12pm on Friday.
Included in the alert are parts of the Welsh coastline, from Chepstow to Swansea, as well as both Severn Bridge crossings.
Under the red alert, the Met Office warns to expect “flying debris resulting in danger to life” and “damage to buildings and homes, with roofs blown off and power lines down”
Uprooted trees are also likely, as well as closures to roads, bridges, railway lines and flights.
The rest of Wales, including Powys, is currently under an amber alert from between 5am and 9pm tomorrow.
With the weather warning, there is an increased chance of danger, and damage to buildings. Roads, bridges and railway lines are likely to close, and there could be delays and cancellations to transport services.
Power cuts are also becoming increasingly more likely and could be prolonged, affecting services such as mobile phone coverage.
It is also likely that there will be some fallen branches and uprooted trees.