Kempton will inspect the course at 14:00 on Thursday ahead of their scheduled big Saturday meeting, with Warwick inspecting 24 hours later ahead of their meeting on the same afternoon which is due to feature the William Hill Half A Mill Classic Handicap Chase.
The Saturday card at Wetherby was abandoned on Wednesday following a 15:30 inspection with the surface frozen and no chance of a significant improvement before Saturday.
Friday’s rearranged meeting at Naas, which is due to feature the Grade One Ballymore Novices’ Hurdle, remains under threat too.
Clerk of the Course Brendan Sheridan said in midweek: "Things have improved but parts of the track are still unraceable. Where it’s raceable the ground on the chase course is yielding to soft; the hurdles (course) it's yielding, yielding to soft in places.
"The forecast is for temperatures of three to four degrees through today and tomorrow and staying above freezing tonight with the possibility of between five and millimetres of rain between now and racing."
Kelso will inspection the track at midday on Thursday with the track reported to be frozen and the weather forecast "not looking so positive".