The train service between Witham and Braintree has been suspended because a tree has been blown down.
The tree has damaged the overhead electric wires between Witham and White Notley and all lines are blocked. Greater Anglia says disruption is expected until 8am.
Network Rail engineers are at the location of the tree and will remove the debris as quickly as possible.
Buses are currently replacing trains.
The Met Office have named Storm Aileen, the first storm of the 2017/2018 autumn/winter season.
There is strong wind warning for the Anglia region on Tuesday night into Wednesday as the first named storm of the season arrives.