Major US fires since 2001; Arizona had hottest spot
There's a great blog I found that gathers and displays geospatial data in innovative ways. The IDV User Experience (uxblog) posted "Major Fires Since 2001" that includes wildfires, prescribed burns, and agriculture fires (such as the annual prairie fires in Kansas). He followed up with a fire 'flipbook' (below) that layers maps for each year. The heat values are taken from NASA satellite thermal anomaly data.
The mapmaker, John Nelson with IDV Solutions, says "each dot represents a moment of pretty extreme heat, down to the one
square kilometer level (I only retained fires greater than 100KW and of
those only fires that the system was more than 50% confident of)."
The single momentarily hottest square kilometer on the map is in central Arizona, on June 28, 2005. It looks like it might be in the Cave Creek fire. That fire burned 244,000 acres.
There are a lot of other fascinating maps on the blog including one on global earthquakes, and several tornado tracks.