The Met Office has issued yellow weather warnings for northern, western and southern Scotland and travellers are experiencing poor weather conditions due to Storm Gerrit.
Network Rail said that a tree had caught fire that affected overhead power lines and all train services between Edinburgh and Helensburgh Central was cancelled before being reopened after 11am, then flooding at Bowling closed the line again.
Network Rail Scotland said on X: “We’re responding to a tree on the line in the Dumbarton area.
“The tree is blocking the line and has caught fire, which is affecting overhead lines.
“The line is currently closed whilst we gain access to remove the tree and extinguish the fire.”
Met Office chief meteorologist Frank Saunders said: “Storm Gerrit will run towards western UK on Wednesday and bring with it potential impacts for much of the UK.
“Winds across southern coastal areas of England will be strong, possibly peaking around 70mph on exposed coastlines, but more widely around 50-60mph within the warning area.
“Rain is an additional hazard from Storm Gerrit, with active weather fronts leading to a wet day for many.
“Snow is also likely to cause problems for some northern areas – only briefly for a few upland routes across the Pennines and southern Scotland overnight and early on Wednesday, but more widely to the north of the central Lowlands later in the day.
“Here around 10cm to possibly 20cm of snow may affect some of the highest routes, this combining with very strong winds to lead to some difficult travel conditions.
“At lower levels a combination of heavy rain and very strong winds will dominate.”