Premier Annastacia Palaszczuk has said Trevor is expected to cross late Tuesday afternoon or Wednesday.
Conditions are such that he could strengthen to a Category Four before crossing.
Lockhart River Mayor Wayne Butcher has said the community is well prepared. From 1:00PM the entire community will go into lockdown. That means no one will be able to leave their home after this time.
Elderly residents have been shifted out of their homes.
Premier said Trevor remains a Category Three system. She said we could see wind gusts reach 220km/hr when the system makes landfall.
Mayor of Cooktown also said his communities are across the situation.
Bruce Gunn, Queensland State Manager from the Bureau of Meteorology, said Trevor is considered a 'severe' cyclone.
"Currently we have a tropical cyclone warning" in place. Those details are included in a separate
Wind gusts up to 220 km/hr, making it a high end cat system. It is expected to cross south of Lockhart River this afternoon or Wednesday.
Its destructive core is about 75km wide.
Mr Gunn said it could strengthen to a Category Four before crossing, but it remains unpredictable. Trevor is considered a 'severe cyclone'. (BOM defines 'severe' as Category Three and above.)
He said that if Trevor stays on track, Lockhart River won't be inundated. But he said Lockhart River will experience gale force winds.
We remain on Flood Watch from Cairns north. Mr Gunn said we could expect falls of between 200 and 400mm daily.
He said the areas most likely to experience storm tide inundation will be south of where Tropical Cyclone Trevor decides to cross.
Mr Gunn said there is a peak high tide forecast at 8:00AM on Wednesday, meaning it would not be good news if Trevor decided to cross around that time.
State Disaster Coordinator Deputy Commissioner Bob Gee said 100km+ winds are dangerous and local communities in path of Tropical Cyclone Trevor should stay locked down and listen to local authorities.
The Premier said extra food and fuel has been brought into communities in the Far North, including in Cairns, in preparation for what is to come.
QFES Commissioner Katarina Carroll told reporters extra SES and Swiftwater Rescue crews have been moved into Lockhart and Cooktown and more resources into Cairns.
By Michelle Price