No containment of wildfire on mountain southwest of Vegas

LAS VEGAS (AP) — A wildfire on the side of a mountain 21 miles southwest of downtown Las Vegas grew to an estimated 2 1/3 square miles (6 square kilometers) with no containment as of early Friday.

The fire starting Thursday afternoon on Forest Service and Bureau Land Management land on Sandy Valley Road about 2 miles (3 kilometers) of State Route 160, the main highway between Las Vegas and rural Pahrump.

It caused a precautionary evacuation of a Boy Scout camp and cast a huge plume of smoke into the sky above Potosi Mountain.

No structures were immediately in danger and no injuries were reported.

Cause of the fire wasn't immediately known.

The National Weather Service has predicted the weekend will be exceptionally hot and dry. Forecasters issued an excessive heat warning for temperatures above 100 degrees (38 Celsius) in the Las Vegas area on Saturday and 110 degrees (43.33 Celsius) by Monday. Humidity is in the single-digits.