The strongest gust I can find in the area is a Lucinda 100 kts, 50kts the highest at Cairns airport. Unfortunately it doesn't appear Tully has a BOM site so no info available from there.
It will be interesting to hear what did happen at the centre.
Tracy which has been the bench mark for cyclones recorded the following "prior" top the BOM instruments being made U/S. In reality the wind was stronger, How much stronger?
217km/h wind gust
950 hectopascals
255 rainfall within 12 hours overnight
death toll-71 people
injuries-145 major, over 500 minor
70-80% houses destroyed.
Wind speeds of 217 km/h registered at Darwin Airport before the equipment was itself blown away and there are estimates of maximum speeds of up to 300 km/h.
Seeing this destruction also brings home another matter - Darwin is a very new city simply because there was almost nothing left standing when Tracy had finished her work.