Wednesday's scheduled meetings at Ayr, Kempton and Lingfield are subject to inspections on raceday morning, while Exeter has been called off.
Officials at Kempton will assess conditions at 10am as up to four millimetres of snow has been forecast on Tuesday evening. The course's fixtures on Sunday and Monday were abandoned due to ice crystals on the surface of the track.
Snow is also the big issue at Lingfield, with up to two inches of the white stuff forecast overnight, and an inspection will be held at 7am. Officials at Ayr have called a precautionary inspection for 7.30am as frost is forecast.
Lingfield clerk of the course Neil MacKenzie Ross said: "Basically the threat of snow is to the west of us, but it's changing all the time. Just to be on the safe side we decided to call an inspection and we'll be on call all night working the track and trying to prevent it from settling. Hopefully we'll be OK."
Ayr clerk of the course Emma Marley said: "We have had 1.5 millimetres of rain, sleet and snow over the past 24 hours. There is a light dusting, but there is no snow lying on the track. We are OK this morning, but we are forecast a sharp frost tonight and on that basis we have to inspect in the morning."
Exeter, however, has been called off. Clerk of the course Barry Johnson took an initial look at 8am on Tuesday and was hopeful of conditions improving after seeing some of the snow on the track melt overnight, but the weather turned colder once again.
Johnson, who checked the track again shortly before 1pm, said: "The temperature has dropped like a stone and unfortunately it is not going improve. It was a lovely day earlier on, we had some rain and it was beginning to thaw. The temperature has dropped back. It was best to make a call now."
Wednesday's meeting at Limerick in Ireland is also subject to a precautionary inspection, at 8am. The track is raceable at present, but a cold night is expected.
Thursday's jumps meeting at Fakenham has been abandoned due to a covering of snow on the course after a noon inspection on Tuesday, but no problems are reported at Gowran on the same day, where the Goffs Thyestes Handicap Chase is the feature event.
The BHA has already taken measures in case there is another weekend wipeout. A jumpers' bumpers card has been scheduled at Kempton on Friday, while Wolverhampton will stage an additional all-weather Flat fixture on Saturday.
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