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."
24 October 2014Sir Max clinches Mercury gold
Full marks for Bangor schooling
Milky Way on another planet
O'Brien targets another Trophy
Hurricane in hat for Morgiana
Buick happy as a Star is born
King ace back in the Old routine
Ballyalton out for the season
McCoy makes Chepstow return
Hutchinson sits out weekend action
Botti seeking Astrelle celebration
Balding sweet on Park chance
Walker hoping for Glorious victory
Times out to make Newbury headlines
Cheltenham honour leading figures
Moore keen on Adelaide chance
Stevens back for Breeders'
Johnson Houghton fined
Duke lords it at Carlisle
Southwell first for O'Brien
Fenton fined over steroids
Buywise on the money at Ludlow
Lockinge the big plan for Toormore
Stone ruled out of Old Roan
Wetherby likely for First run
Elm tops Trophy octet
23 October 2014Fenton guilty of drugs possession
Williams hoping for Max power
Harty biding his time with Lane
Clonmel aim for Baily
Jezki possible for Morgiana bow
Harrington expects Naylor to shine
Gosden a Fan of Newmarket scorer
Northern aces face off in Cumbria
Murphy plagued by shoulder injury
Dynaste charts direct Haydock route
O'Brien outlines Breeders' plans
Wetherby-bound Taquin to duck Power
High hopes for Adelaide run
Gilgamboa waits on ground
Dandino misses Cup date
22 October 2014December date for Balding memorial
Deputy outgunned at Fontwell
Whisky chasing Power spoils
Burke maps out Odeliz targets
Present sights set on Power prize
New category for all-weather champs
Moviesta has sales date
National aim for O'Neill star
Cheltenham on Ginge agenda
Lewis eyeing Dubai success
Henderson handed Ascot role
Panther given Breeders' go-ahead
Plain sailing for perfect Storm
Big Easy sets sail for Open fixture
Hall monitored for Giant Bolster
Stomachion in November frame
Hughes revels in 'sweet' success
BHA moves to address small fields
Connell turns to Heskin
Integral to race on next year
21 October 2014Storm breezes to Exeter victory
Moore concedes title to Hughes
Meade maps out gameplan for stars
Pele poised to tackle Hennessy
O'Neill sure of Taquin redemption
Heron seeking Great prize
Court to go on Trial
Saviour blow for Skelton
Dan makes chase debut
Moore waits on Grugy decision
O'Neill outlines That choices
Conn possible for Auction bid
Power team weigh up options
Bangor cancel schooling card
No rushing back for Long Run
Dynaste leads Old Roan contenders
Grands Crus retired
Exciting Berlais heads to Chepstow
Force handed Hong Kong mission