Thursday 22 January 2015 08:45, UK
Doncaster's jumps fixture on Friday must survive an 8am precautionary inspection on raceday morning.
Clerk of the course Roderick Duncan will be closely monitoring conditions as overnight temperatures are set to dip below freezing.
Town Moor had been under a light covering of snow, but this has now melted after nearly nine millimetres of rainfall.
The going on both the chase and hurdles track is soft, good to soft in places.
Doncaster is also due to race on Saturday, when the Skybet Chase takes top billing on a fine card.
Duncan said: "We'd be quite optimistic if that forecast is correct. "I don't anticipate any problems for Saturday's meeting, but we do need to have a look tomorrow because of that frost threat."
