There was a fire west of Sundre a few yrs back, that killed at least some cattle in the forestry zone on both sides if the trunk road. Crown fire will suffocate whatever is under it. Get a good wind and you can have a problem outrunning it even on horseback. Can easily get trapped in an area with a fire cutting off your exit that way, also.
The bulk of southern BC is shut down now as well.
Idaho/Montana doesn't look good either
http://www.idahofireinfo.com/p/maps.html