I decided to go and see what was available for fire alerts around the nation.
It turns out the majority of fire authorities publish GeoRSS. I took the feeds and aggregated them, plus put in a transformation of the data to JSON.
Using Leaflet, I added a rendering of particular fires.
Using the OpenStreetMap Overpass API, I queried for "all areas in a 500m bounding box", and again using Leaflet, rendered those polygons onto a map.
Here's the Project:
Here's a few screenshots:
The few you see in those states are from Sentinel, a satellite based system for detecting 'hot spots' that may indicate a fire.