Officials at Catterick will have a second look at the track at 10am to decide if this afternoon’s meeting can take place.
Clerk of the course Jonjo Sanderson inspected the North Yorkshire course at 7.30am but was not able to make a firm decision.
He said: “It is frosty and only 50-50 at the moment but the forecast is for it to get better. However, the wind-chill factor could be a problem. We have got clear skies now and the sun is out and temperatures are rising slowly but it is not cut and dry at this stage.”