It's hoped a double-header of qualifying planned today will make up for lost time in this year's Festival of Motorcycling.
The afternoon schedule will see roads around the TT course close from 12.30pm until 4.30pm, before shutting again from 6pm and re-opening no later than 9pm.
Officials are hoping contingencies today and tomorrow will allow racers to get more practice in following a series of cancellations since Saturday.
Yesterdays practice session was the latest to be called off due to poor weather on Island.
High ground could see 4 inches of snow on Saturday night
Mountain Road unlikely to open before Monday
Yellow warning for freezing temperatures tonight
School bangers night called off
AK47 and Uzi handed in to police
"No dispute" over Liverpool Ferry Terminal, says main contractor
More weekend bus strikes to come after 10-day walkout?
Minister to face question about bus strike