The clerk of the course says tomorrow's TT contingency session will be used.
Thursday will see roads close for the sidecar and supersport races.
The decision to hold the races will depend on weather.
The contingency closures means the roads will close from 10am until no later than 9.30pm.
Ramsey Remembrance service to be marked by maroon rockets
MEDS phone line to be down temporarily
Committee to examine link between poverty and poor academic performance
Police advice for trick-or-treaters to stay safe
How will Manx Care reduce the number of negligence claims?
Manx Language Festival to be held next week
Manxman sailings in doubt from tomorrow
Car falls down steep bank on Mountain Road