There is a yellow warning for rain from the Met Office until 6pm.
LNER has advised passengers not to travel due to likely disruptions.
Unused tickets for December 27 will be valid for a refund.
The yellow warning poses a risk of power cuts, flooding, and travel disruption.
Met Office chief meteorologist Frank Saunders said the south coast England will experience the worst of the storm.
Rain is an additional hazard from Storm Gerrit.
Met Office meteorologist Simon Partridge said the storm was named as a warning to people coming home after Christmas.
A storm is named when it has the potential to cause medium or high impacts.
Northern has published travel advice over the festive period.