Today's afternoon practice session has been cancelled due to weather conditions.
Road closures scheduled from 1:30pm until 4:30pm will not go ahead.
People are being reminded tonight's evening session is still due to take place - with roads expected to close at 6pm and re-open no later than 9pm.
There are also two practice sessions scheduled for tomorrow, with roads shutting betweem 12:30pm and 4:30pm and then from 6pm until 9pm.
Further Update - Thursday afternoon. Sorry to say but as you can see from the conditions, both visibility and wet roads, this afternoon's practice session has been cancelled. Conditions are due to improve, so we will be closing roads at 6.00pm for a 6.20pm start as per schedule.— Gary Thompson (@acugary) August 23, 2018