Shortly before 6.30am, British Transport Police were called to reports of a car having been struck by a train at Athelney automatic half barrier level crossing.
The train involved is the 0546 Exeter to London Paddington service.
The train has not been derailed and there are no reports of any injuries to anyone on board.
The car is trapped under the front of the train and services are currently stopped in the area.
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Hundreds are expected to attend the service wearing pink, Maisie Duncan's favourite colour.
A bright chilly start but a fine afternoon with sunny spells for most. Mild winds will help temperatures approaching double figures.
A chilly start with some cloud but that will break up allowing sunny spells to dominate the afternoon. Temperatures are on the rise too.