One of your best tools to understand fire risk is the fire history maps. 

Google earth pro has a layer feature and there are other sites too. 

If you have a recent burn scar firefighters will try to box in areas of the active fires up to the old line so that section is no longer as big a worry. That's why they light backfires to try and control how it moves. 

That's why prescribed burns are so vital. You apply fire gently to the landscape not wait for it to become a high fuel zone that burns too hot and creates dead zones.