Prospects of Ayr staging the first turf meeting in Britain since last Thursday have taken a turn for the worse with snow now forecast.
The British Horseracing Authority put on an extra fixture at the Scottish track on Wednesday as it was thought it would escape the worst of the weather.
Until the last 24 hours there were no problems reported, but the meeting is now somewhat in the balance.
Clerk of the course Emma Marley said: "We are perfectly raceable at present. We were 1C overnight and 2C yesterday.
"However, the forecast is for light snow tonight and into tomorrow morning, one to two centimetres.
"We'll have a better idea of our chances in the morning, but the forecast is slightly problematic.
"All we can do is wait and see as it is coming in from the east coast and it is quite heavy over there."
23 November 2014McBratney banks on Boy progress
Silvi scraps to Betfair glory
Bally sparkles on Mullins' big day
Kelly's a Fixed Brush hero
Faugheen turns on the style
Fenton banned for three years
Amlin double for fab Ferof
New One excels in Haydock romp
Flyer grounds Ascot rivals
Vasco a cut above opposition
22 November 2014Conti strikes Betfair Chase gold
Taken seeking Listed gold
Mogol facing Monksfield test
Vautour makes chasing bow
Gordon enjoys Dundalk spin
McCoy: Landmark swayed judgment
Jacob warms up with brace
Hill peaking for Troytown return
Billy back on winning track
Walsh back for Ferof ride
New ready for Haydock Rush
Cheltenham is Big aim
Mullins eager for Faugheen run
Cue primed for Betfair defence
21 November 2014Geraghty snapped up for Seuil
Volnay aiming for quick repeat
Argocat camp play it cool
Leading Light retired
Frankel filly breaks Irish record
Linton loses Listed place
Doubles for Pipe and Scudamore
Nasty spill for Insole
McCoy targets midweek return
Farm comes Home to roost at Thurles
Flemenstar future dictated by scan
Cue lined up for Haydock return
20 November 2014McNamara joy at turning pro
Volnay seeking Mersey paradise
Sloane Avenue books Dubai date
Spencer reveals Qatar riding snub
Doyle ready for Godolphin challenge
Good news at Huntingdon
BHA hear Linton case
Avenue shows winning way
Grugy diagnosed with hip issue
Meade plots Monksland comeback
Ptit secures swift double
Shanes shines in hurdles win
Mullins' stars set for weekend runs
Haydock aim for Aurore
Medermit in Betfair contention