I-A at minimum you have State, local unit I.d. location, a name, at least some of the responding resources, and a size up. Post camera and scanner link if you have them. If the incident goes more than a day it gets moved to the continuing incidents section.
Q&D is for anything related to a fire whether it be you seeing a column on a Webcam or driving home and you can't find anything about it or various issues that might and do occur like catering or how the local community is helping out. Things like was there a tornado or pyro CB lightning or any pictures of such should be Q&D.
Example IA with basic info where things changed very rapidly after most of us were asleep.
Q&D that started as an IA but OP decided to move it because of limited info and changes.
Members are free to move threads around to proper sections of the forum if we see it is necessary.