Fakenham faces Saturday check
Sunday's meeting at Fakenham must pass a precautionary inspection at 1300(GMT) on Saturday.
Fakenham will take a look on Saturday
The National Hunt fixture is in doubt as temperatures are due to drop below freezing on Friday night and snow is forecast on Saturday morning.
An inch and a half of snow fell on the track on Friday, after declaration time, and the ground is currently soft.
Frost covers are currently in place on the take-offs and landings.