LAS VEGAS (AP) — Tens of thousands of people remain without power in Las Vegas where winds in excess of 70 mph have overturned semi-trailer trucks, toppled trees and sent power lines down onto cars near the Strip.

No serious injuries have been reported but widespread power outages and downed traffic lights are snarling traffic in and around Las Vegas. Officials at NV Energy said crews were working Thursday night to restore power to an estimated 42,000 customers.

The high winds snapped a series of telephone poles a few blocks east of the Strip where power lines fell on several cars.

The National Weather Service recorded winds gusting to 82 mph at the Red Rock Conservation Area west of Las Vegas, 71 mph at North Las Vegas Airport and 60 mph at McCarran International Airport, where numerous flights have been delayed.