Friday’s meeting at Chelmsford will have to pass a 1pm inspection on Thursday as the current cold snap continues to bite.
Four inches of snow has fallen at the Essex track overnight with further snow expected ahead of racing on Friday.
Clerk of the course Andy Waitt will assess the situation on Thursday as staff at the venue try to clear as much snow as possible.
He said: “We have about four inches of snow overnight and we have more forecast today, as well as tomorrow and Friday.
“We will just take a look tomorrow afternoon to check we are where we need to be in terms of clearing the snow.
“It is more of a health and safety issue than a problem with the track. We also need to check the surrounding roads are safe for people to get to the racecourse.”
Thursday’s meeting at Clonmel has already been abandoned due to a combination of the weather forecast and anticipated driving conditions.
A statement from the Irish Horseracing Regulatory Board said: “The IHRB has announced that the fixture at Clonmel on Thursday, March 1 has been abandoned due to an adverse weather forecast and hazardous driving conditions.”
Officials at Newcastle have called a 10am precautionary inspection ahead of this evening’s meeting after four centimetres of snow fell at the track overnight.