This view of the fires in the western United States, collected on June 10, 2002, by the Sea-Viewing Wide Field of View Sensor (SeaWiFS) shows several of the larger smoke plumes as well as a band of smoke over Nebraska and the Dakotas that appears to be getting pulled into a low pressure system centered over northern Montana.
Image courtesy the SeaWiFS Project, NASA GSFC, and ORBIMAGE