Debbie expected to hit Townsville early

Tropical cyclone Debbie is expected to hit Townsville earlier than first forecast and with a decision on evacuations to be made early on Monday.

Townsville residents may be preparing for Cyclone Debbie but they've done it all before. (AAP)

Tropical cyclone Debbie is expected to slam into Townsville earlier than first forecast, authorities warn.

The Bureau of Meteorology has warned winds of up to 100km/h will develop in the city as early as 4pm on Monday based on Cyclone Debbie's current path, Queensland Police says.

The cyclone was originally forecast to make landfall north of Ayr early on Tuesday.

Residents are being told to take precautions and find shelter.

A decision on evacuations will be made at 5am on Monday.

All schools in Townsville will be closed on Monday.

Information is available from the Disaster Coordination Centre on 1800 738 541 or the Townsville Disaster Information Facebook page.