Slippery rails between Llandudno Junction and Blaenau Ffestiniog mean that trains have to run at reduced speed on the line for safety reasons.
Trains running between these stations may be delayed by up to 30 minutes.
This is expected until the end of the day.
Check before you travel:
You can check your journey using the National Rail Enquiries real-time Journey Planner.
Compensation:
You may be entitled to compensation if you experience a delay in completing your journey today. Please keep your train ticket and make a note of your journey, as both will be required to support any claim.