RENO — Authorities in Nevada ordered the evacuation of hundreds of homes southwest of Reno and closed a major highway to Lake Tahoe after a wind-driven wildfire spread quickly through mountainous vegetation Monday.

About 3,000 people were told to leave the area, but it started raining as local, state and federal crews arrived to fight the 100-acre blaze, dubbed the Callahan Fire, said Adam Mayberry, spokesman for the Truckee Meadows Fire Protection District.

No structures were damaged and no injuries were reported in the first hours of the fire, Mayberry said.

Speaking to the Associated Press, Mayberry said, “The winds are blowing very hard today,” and noted that firefighting planes remained on the ground due to windy weather. “But it’s raining, so that might help too.”

Power company NV Energy said it had shut off power to approximately 5,500 customers between Montreux Golf Course, Galena High School and Mount Rose Highway as a safety precaution.

The fire was reported just after 10 a.m. and the cause was not immediately known but would be investigated, Mayberry said. Said he was near or near 9 square miles of land charred by wildfire It burned for about a week in September.

Nevada Gov. Joe Lombardo said on social media that his office and the Nevada Division of Emergency Management were “fully engaged in assessing and fighting” the fire.