While there was smoke all day across much of Western Wyoming. Thanks to the Powerline Fire near American Falls Idaho, very thick smoke engulfed the Upper Star Valley, including Afton late Saturday afternoon.
Following is a GOES-16 satellite image Saturday afternoon showing the Hot Spots of ongoing Fires of which the Powerline was the largest and hottest.
Also note the Fire to the southeast vicinity of the Hams Fork Valley north of Kemmerer.
The smoke plum from both fires is well defined in the late afternoon GOES-16 Satellite photo.
Particularly noticeable was the band of very heavy smoke crossing the WY/ID border vicinity Afton.
The video from the West Hills Cam located about 4 miles west of Afton provides a view of the thick smoke that spread across the valley late in the afternoon.