By early afternoon, the fire off to the SW was going great guns, aided by continued dry weather and some decent wind. Luckily the smoke plume was south of town, and again aimed at Cheyenne. Unluckily, it turned out to be just about centered on the area where I was mapping today. I quit mapping early, at around 5:30, because it basically dusk then, from the thickness of the smoke overhead. While I was mapping, I was joking to myself that the little bugs flitting around and the occasional dandelion seeds blowing past were actually bits of ash. Until I realized they were in fact actually bits of ash. The fact that ash was falling about 40 miles downwind from made me think the fire must have been burning with some real intensity.
From there, I went up to run at Happy Jack, which was just north enough to be mostly smoke free. If you looked at any dirt surface though, it was easy to see the ash on the ground. Ran for just under 2 hours, easy, and ran by a new section of bike trail being put in that hadn't been there yesterday.