Bushfires have threatened homes across Queensland on Monday, sparking warnings for residents to leave and demands for waterbombing aircraft to be called back in to help.

After a number of alerts throughout the afternoon, only a blaze near Ravensbourne, between Toowoomba and Esk, remained at a heightened alert level by 5.30pm.

The fire was burning close to Ravensbourne Tip and Mount Jockey roads, Queensland Fire and Emergency Services advised.

Residents were urged to be prepared to follow their bushfire survival plan as the situation "could get worse quickly".