The Met Office has put the warning in place for Friday, 18 August between 00:00 (UTC+1) and 18:00 (UTC+1).
Locally strong and at times gusty easterly winds are expected to develop to the west of high ground overnight Thursday into Friday, with gusts of 45-55 mph most likely.
There is a small chance a few places could see gusts in excess of 60mph. This may lead to difficult conditions for holiday traffic on Friday, and could result in a few fallen trees affecting some roads and railway lines. Temporary structures across campsites and outdoor events could be damaged.
What to expect
- Some bus and train services could be affected, with some journeys taking longer, or even cancellations due to the potential for fallen trees.
- Delays for high-sided vehicles and caravans on exposed routes and bridges likely.
- Trees and temporary structures such as marquees and tents could be damaged.
- Some short term loss of power and other services is possible.
- Isle of Anglesey