Monday's National Hunt meetings at Plumpton and Catterick are both subject to inspections at 8am on raceday morning.
Officials at Plumpton decided to take a look after 12 millimetres of rain had been recorded by 2.30pm on Sunday on top of five millimetres overnight at the East Sussex venue.
Clerk of the course Mark Cornford said: "The rain has been falling for longer than I expected. I just need a few dry hours to get rid of the surface water. The ground is raceable and hopefully it will stay dry so I can make an early decision, but if it keeps raining I might have to make the decision the other way."
The potential problem at Catterick is snow. It is likely to fall on higher ground and miss the North Yorkshire track, but clerk of the course Fiona Needham feels it prudent to have an early check.
She said: "Everything is fine, but we felt it safe to call a precautionary in the morning because of the potential threat of snow. The forecasters think it is more likely to fall just on higher ground, but they are not 100% sure, so we had better check. Hopefully we will arrive to find we don't need an inspection."
Meanwhile a contingency plan to stage an all-chase and bumper card at Lingfield on Tuesday is to be implemented after the hurdle races were abandoned due to waterlogging.
The fixture will include the three chases already scheduled plus three additional chases and a National Hunt Flat race, which will be run on the all-weather track.
Clerk of the course Neil Mackenzie Ross said: "We've had steady rain all day. At 2pm we'd had just over five millimetres and it's still continuing to rain. The hurdle course is waterlogged, which was expected with any rain, but hopefully we will be able to race on the chase course, all being well.
"Monday is relatively dry with possibly the odd rogue shower, but there's certainly some snow around in the forecast tonight and it's been a wet day, so we will be in a better position to assess things after we see what tonight brings."
Irish racing continues to struggle and Sunday's fixture at Naas was called off due to waterlogging, which has also claimed Down Royal on Tuesday.
25 January 2015Concerto plans hinge on scan
Sherwood - More to come from Clouds
Skelton nominates Bartlett for Risk
Bridgwater thrilled with Bolster
Foxrock given Hennessy green light
Meade gives Monksland World aim
Williams weighing up Tea options
Lingfield jumps card under threat
Saphir sparkles in Cleeve
Chao springs Neptune surprise
Donny glory never In Doubt
Tango hot to trot at Donny
Apache claims Blaklion scalp
Day disappointment as Anna shines
Clouds claims Cup glory
McCoy rules on Kingdoms
Peace takes Triumph Trial
24 January 2015More injury woe for Carberry
Tiger ready to Roll
Surrey National target for Itoldyou
Sire thrills Moore in Saturday spin
Walsh braced for Sceaux thriller
Festival dream alive for Desilvano
Martello on the march
Snowden excited by View return
Cole chasing Cleeve glory
Green light for Uttoxeter
Easter to swerve Skybet Chase
Pauling lands Town Moor double
Anna aiming for Trophy triumph
Blaklion on prowl at Doncaster
Sceaux primed for Arkle test
Geraghty hoping Co call pays off
Sherwood's head not in the Clouds
Jezki has Fly in sights again
Ground 'not ideal' for Fly
23 January 2015Greatrex plotting Aintree route
Fulton outlines Easter worry
Dunshea handed BHA role
Mullins mapping out bumper plans
Kalkir to Spring into action
Uttoxeter call morning check
Doncaster gets green light
Weather beats Fontwell
Frost claims Huntingdon card
Frost claims Huntingdon card
Williams On alert for Cheltenham
Safety first for Godolphin
Djak is six of the best for Mullins
Dicosimo delivers at Gowran
Last-gasp Dedigout takes Galmoy
Zig to tackle JLT prep in Pendil
Palace and Poli star in RSA field
Mullins luminaries in Arkle frame
Fishers Cross to swerve Cleeve
22 January 2015Teaforthree forced out of Warwick
Aubusson jousts for Pertemps prize
Veteran Victory set Lingfield date
Cloonacool to vie for Imperial rule
Assembly out for the season
Captain at ease
Checks at Doncaster and Huntingdon
Warwick defeats the elements
Fakenham ready to roll
Wet Festival would suit Gamble team
All systems go for Cheltenham
Monksland continues comeback
Grate effort sparks Aintree dreams
Pendil plan for Rendezvous
Swan on Track for second Thyestes
Another landmark day for Chelmsford
Moore admits Sire fitness worry
Calipto stands firm in Betfair