The Public Advisory has information on the radius of the hurricane and the tropical force winds.
That gives you a rough diameter around the track that you can possibly have winds of this force or highter (as the winds get more intense the closer you get to the core).
Currently, this is in the section DISCUSSION AND OUTLOOK, where it says
Hurricane-force winds extend outward up to 15 miles (30 km) from
the center and tropical-storm-force winds extend outward up to 160
miles (260 km).
The diameter is actually asymetric, so this is okay for a rough guess.
The Storm Surge section gives you the potential area and surge you might expect.
To see the change in the track over the past forecast...
Go to https://www.nhc.noaa.gov/
Click Warnings/Cone Static Images
In the bar under HURRICANE IDALIA, click Archive
Click Graphics Archive
Then click, for instance, Cone->5-day with line
to see changes over the past forecast