The Mountain Road will close in its entirety as a safety precaution
Government says it's working with campsite providers and commissioners to provide severe weather contingency plans for TT campers.
It's as a yellow weather warning for gale-force winds comes into force on the Isle of Man from 9pm this evening.
Gusts could reach up to 55mph.
Support will be provided overnight by the Isle of Man Civil Defence Corps.
As a safety precaution, the entire Mountain Road is closing to traffic from 7pm until the completion of racing tomorrow (Tuesday 3 June).
It will not be accessible from Ramsey Hairpin to Creg Ny Baa.
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