The adverse weather has caused widespread disruption to travel services in Munster and Leinster, which is having a knock-on effect in Donegal.
Bus Eireann has cancelled two more runs of the X32 Dublin/Letterkenny Expressway today (Wednesday) at 11.20am and 15.20pm. These services were due to leave Letterkenny Bus Station.
No decision has yet been made on school buses in Donegal later this week.
Bus Eireann has told customers that updates to services will be posted on the website at https://t.co/opFBXEiqO8