Tomorrow's race meeting at Navan has been abandoned due to frost.
An early afternoon inspection found the course to be unraceable.
Willie Mullins confirmed today that stable star Florida Pearl will head for the Servo Computer Services' Ascot Chase at the weekend - weather permitting.
The popular veteran, who made a winning seasonal reappearance at Fairyhouse recently, is also engaged at Thurles on Thursday and Punchestown on Sunday.
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But speaking at Tramore races today, Mullins said: "Florida Pearl is Ascot-bound on Saturday, but with the way the weather is, everything is a little bit up in the air."
The County Carlow handler added: "If the Ascot plan doesn't work out, we'll wait for the Hennessy Gold Cup, a week later at Leopardstown."