Wildfires in the mountain west have become less frequent but more intense.

Recently, the Denver Gazette published a short article on current research comparing historical versus contemporary wildfires in the America Southwest, with (to this reader) some rather surprising results.

The areas investigated in this study were primarily dry conifer forests dominated by Ponderosa pine and Douglas fir, very similar to our own forests in the Jeffco Front Range. Prior to 1880, wildfires used to sweep through these forests every 10 to 12 years. These were almost entirely low-to-moderate intensity fires that cleared out undergrowth and forest duff, burning off the lower limbs of the trees, but not devastating enough to kill the trees themselves. Typically, these low-intensity burns involved smaller areas, 5 to 250 acres. Despite the small size of these wildfires, the frequency and style of these fires were able to maintain forest health, even during prolonged periods of drought, when fires were started by lightning strikes and/or Indigenous forest stewardship events. Read more