Heavy rain has flooded the railway line between Berwick and Newcastle, with disruption expected until at least 1pm.
According to nationalrail.co.uk earlier this morning, trains were unable to run between Morpeth and Chathill. Network Rail was checking that the line was safe for trains to be able to run again and at 9.40am tweeted: '#Alnmouth Lines are now open. Residual delays will occur as services recover. Check @nationalrailenq for service information.'
At 9.45am, Virgin Trains East Coast tweeted: 'Both lines are now open at #Alnmouth, but are subject to a 50MPH speed limit'. For Virgin Trains travel updates, click here.
Earlier, National Rail's website stated that road transport had been requested to run between Newcastle and Berwick, but there was no estimate on availability.
Virgin Trains East Coast customers are advised to travel on the next available Virgin Trains East Coast service. If you have tickets for a cancelled service, you can travel on the train either before or after the service on your original booking. To help you get going as soon as possible, Advance tickets can now be used on trains other than the booked service until the line reopens and services return to normal.
Virgin Trains East Coast customers may also use their tickets on CrossCountry; Hull Trains; TransPennine Express; and Virgin Trains West Coast services.
CrossCountry customers may use their tickets on Grand Central services; ScotRail services between Edinburgh and Glasgow; TransPennine Express services on any reasonable route; Virgin Trains services between Scotland and Birmingham; and Virgin Trains East Coast services.
The heavy rain has also caused disruption on the roads throughout Northumberland.