Hereford will have to pass an 8am inspection on raceday if Wednesday’s meeting is to go ahead.
With the scheduled card at Wetherby already called off, Hereford is due to stage the only jumps action in Britain.
However, the course is reported to be unraceable at present, with wintry showers also a possibility before racing.
The track tweeted: “The going is heavy but currently unraceable in places with standing water following 9mm rain yesterday. Forecast for chance of wintry showers today and overnight. Inspection 8am tomorrow.”
Tuesday’s meeting at Punchestown was called off after a second inspection because there is snow on the course.