LNER has cancelled several services and ScotRail is also warning of delays on some lines.
Rail passengers are facing more disruption on services to Dundee, Angus and Fife as Storm Ciaran brings heavy rain to eastern Scotland.
All LNER services between Edinburgh and Aberdeen have been cancelled until Saturday due to the forecast.
Services between Edinburgh and Inverness, via Perth, are running as normal.
Meanwhile, ScotRail has confirmed speed restrictions will be in place on the following lines from Thursday afternoon/evening until Saturday morning:
Edinburgh to Dundee
Dundee to Aberdeen
Aberdeen to Inverness
The operator posted on X, formerly Twitter: “These speed restrictions mean we can still operate our services whilst keeping everyone safe, but they will cause delays along the affected routes.
There will also be no direct trains between Glasgow/Edinburgh and Aberdeen between Friday morning and mid-afternoon, with passengers needing to change at Dundee.
