Live updates: Somerset traffic and travel snow disruption

Roads across Somerset have been left impassable following several hours of steady snowfall across the region this morning.

Of the roads that remain open, police have warned drivers to not make any journeys unless they are absolutely necessary. Keep checking below for the latest traffic and travel news, including any major road closures...

4PM

South West Trains has issued revised timetables for its services through Somerset over the next two days.

The rail operator has been forced to cancel many of its services due to today's heavy snowfall, but limited services are still in operation between London Waterloo and Exeter St Davids, stopping at Yeovil Junction and Crewkerne.

Revised timetables have been released for Friday and Saturday services, and a normal service is expected to return on Sunday.

Click here for the South West Trains Friday timetable or here for the South West Trains Saturday timetable.

Meanwhile, fallen power lines have caused a partial blockage of the A362 road at Buckland Dinham.

3.45PM

Both park and ride venues in Taunton are open and running regular services.

3.30PM

The A39 over Exmoor has been closed all morning, with steep hills such as Porlock Hill proving to be extremely treacherous.

Highways staff are hopeful of reopening the road this afternoon, but have warned drivers to proceed with caution on Exmoor and over the Mendips.

3.15PM

Somerset County Council said its entire fleet of 23 gritters have spent all night and all day treating the county's roads network.

Somerset Highways representatives confirmed that the majority of the county is under at least four inches of snow.

The council reported "particularly challenging" conditions at Roundham Hill in Crewkerne, Shipham Hill in Cheddar and all high ground on Exmoor.

Farmers with snow ploughs have been helping highways teams on Exmoor, and also on higher ground between Yeovil and Glastonbury.

12.45PM

First has confirmed it is still running limited bus services in Weston-super-Mare, and between Wells and Yeovil. Click here for the First Bus amended timetables for Somerset.

12.30PM

Warnings of hazardous conditions remain in place for anyone driving on the M5 motorway through Somerset, due to the snow and slush on the carriageways.

NOON

The A37 at Farrington Gurney has been cleared, and has now reopened to traffic.

11.30AM

A lorry has jackknifed after sliding in the snow on the A39 Bristol Hill near Wells.

The road is blocked in both directions at the Walcombe Lane junction, and conditions are extremely hazardous.

Another jackknifed lorry has blocked the A367 Bath Road at Oakhill. The road is blocked between the High Street and Withy Lane junctions.

11AM

The A303 remains closed at Southfields Roundabout, near Ilminster.

10.30AM

An accident and a fallen power line has closed the A372 between Aller and Langport.

USEFUL INFORMATION FOR SOMERSET DRIVERS

Motorists urged to avoid driving today as snow continues to fall on Somerset roads

Top tips for driving in snow and icy weather