Officials at Chepstow will wait until Christmas Eve before deciding when to inspect for their Coral Welsh National meeting on Thursday.
The Monmouthshire course has been hit by substantial rainfall in the last week ahead of the track's most high-profile fixture in the calendar. The course is currently waterlogged in places and there is more rain on the way.
Clerk of the course Keith Ottesen said on Sunday: "In just over 24 hours we have had 45 millimetres, which takes us up to 135mm in nine days - that is nearly five and a half inches. We are up to 1500mm for the year and we had 849mm for the whole of 2011, so it's not quite doubled, but we're not far off."
He went on: "It stopped raining at around 3am this morning and quite a bit of the surface water we had has now gone, so there has been improvement.
"However, there is quite high confidence that another band of rain is coming in tonight, bringing something between 10 and 15 millimetres, and that will leave us where we were on Saturday.
"We will see what tonight brings before calling an inspection. We will be inspecting at some stage but the timing of it will depend on what we get tonight. There is more rain forecast for Monday and Tuesday, but it is showery in nature so we could miss those or we could get some sharp showers.
"There is another band coming in on Wednesday but it is not due to be as long as what we have been getting. We'll get through tonight and see where we are."
Chepstow officials are making contingency plans to switch the card to January 5, should conditions not improve sufficiently.
"First and foremost we are thinking about racing on the 27th," said Ottesen.
"It is not a foregone conclusion we won't race that day, though obviously with the rain we've had and are forecast there is some doubt. In the meantime we are working on a contingency plan of racing on January 5."
31 March 2015Mac magic earns Southwell shock
Royale seal of approval for McCoy
Consort possible for Craven
Fry lines up double Fairyhouse raid
Gatsby seeking Tattersalls gold
Merry King to miss Grand National
Moore has Dundalk ride for O'Brien
Vautour still in Fairyhouse picture
Panther plans open before Gold run
Appleby outlines Charming gameplan
Reserves added to Irish National
Punchestown an option for Bolster
Euro could be saved for Ascot
Tullius to go the distance
Bass angling for Rainbow gold
Dreaper an Amigos ally
Maguire ruled out of National
Sirius camp ponder rise in trip
Solar powered up for Classic charge
Guest treads cautiously with Chrome
30 March 2015Noseda sorry for Sloane reaction
Botti aims high with Naadirr
Flemenstar pleases on comeback
Nicholls trims National team
Bolger rates Lucida highly
Angel in the Hunt for Cup honours
Mullins weighs up Aintree options
Hannon readies Classic team
McCoy rules out Punchestown
O'Brien big guns enjoy away day
Hannon aims high with Windshear
McCoy thrills on Ascot farewell
Huge shock in Park Express
Moore to step up Ballydoyle rides
Jacob ripe for Pineau ride
Varian suffers Kingston 'blow'
Aintree on God's radar
29 March 2015Hero makes his mark for O'Meara
Kristale limbers up for York return
Ferof in hunt for Aintree riches
Telescope back in focus
Clouds given National clearance
Chrome given Royal summons
Flemenstar unplaced on return
Dolniya excels in Sheema Classic
Solow gallops to Turf glory
Gabrial just divine in Lincoln
Naadirr strikes to take Trophy
Sole switches on late power
Tullius has to pull out the stops
Romsdal up and running
Panther pounces for Gold
28 March 2015Prince Bishop rules the World
Prince Bishop rules the World
Raven swoops for De Sousa
Hanagan strikes first blow
Stack harbours Lincoln doubts
Odeliz gears up for Park
Mshawish given green light for Turf
Margarson keeps faith in Guest
Havlin has high hopes with Hopkins
Togo lands another for Pakidis
Longsdon and Fehily rule with Law
Coleman picks up ride on Druids
Power out to end Meydan hoodoo
Jack firmly in Trophy hunt
McCoy honoured with Celebration
O'Brien set on Flat resumption
'Rock star' Chrome seeks World fame