Passengers are queuing up at York Station as multiple services are being hit by delays.
It comes after Chris Nutton, Major Projects & TRU Director for TransPennine Express issued a plea for passengers not to travel.
He said: “We are urging anyone today across the affected routes to defer their travel or claim a refund.
“As the Met Office predicted, snowfall of up to 40cm has impacted our network and the logistics behind it, such as the highways accessing our maintenance depots.
“We are working hard with our colleagues at Network Rail to restore services as quickly as possible.”
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TPE said that no bus replacement services have been able to run, along with a series of delays caused by snowfall.
LNER has also issued a warning, saying that disruption is “possible” on all their routes – their second most severe warning.
Northern joined the calls for passengers not to travel, a spokesperson said: “Due to significant snowfall causing problems on the rail network we advise all passengers not to travel.
“This position will be reviewed throughout the day and updates will be posted if the situation changes.”
For more updates on the developing situation, tune into our live coverage here.