My best guess of the distance from the Y end station is about 6 miles. The direction of travel appears to be South-East mainly along the NW ridge of Rattlesnake Mountain and a bit down into the foothills below (see camera picture).

(From EY camera)

The fire seems to be staying mainly on the South-West side of Rattlesnake but still spreading to the Southeast. The highways have been reopened according to the advisory page.
Some shots of Rattlesnake from around the parking lot(s).