The weather has put paid to today's MGP racing schedule.
With the risk of gale force winds and localised flooding later, race organisers have decided to run the 350 and 250cc Classic Grand Prix and the Junior Manx Grand Prix tomorrow instead.
That will mean all roads, including the Mountain, will close at 11.30 in the morning, and reopen no later than 9pm.
Racing is expected to get underway around midday.
The whole course will be open between 17.00 and 18.00 to allow motorists to get home from work.
There will be then be a one lap practice for all classes after 6.
The forecast for tomorrow is for a dry and sunny day with only very isolated showers.
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