Info from: San Bernardino County Fire…
5:52 pm: SBCoFD on scene of a VEGETATION FIRE, Highway 18 X Old Waterman Canyon Rd. 5 – 10 acres moderate rate of spread, moving up hill.
6:05 pm: The Highway 18 closure is from the bottom of Old Waterman Canyon Road up to Crestline. 10-15 acres, 0% containment.
Seems to be called the “Cloud Fire“, a discussion here.