PHOENIX (AP) -- Powerful thunderstorms brought heavy rain and strong winds to the Phoenix area, flooding roads, delaying flights, and knocking out power to thousands. Other southwest storms caused more flooding in Nevada.

The skies above downtown Phoenix were completely gray as the deluge began Saturday afternoon, eventually forcing authorities to close a section of Interstate 17 through the city for more than hour due to flooding.

A shopper pushes a cart as he runs to his vehicle during a storm in Phoenix on Saturday. (AP Photo/The Arizona Republic, Rob Schumacher)
A shopper pushes a cart as he runs to his vehicle during a storm in Phoenix on Saturday. (AP Photo/The Arizona Republic, Rob Schumacher)
loading...

Flight departures and landings resumed about 3:30 p.m. after they were halted for an hour at Phoenix Sky Harbor International Airport. Airport spokeswoman Julie Rodriguez said more than 40 flights scheduled to land in Phoenix were diverted to other airports.

"The wind caused some damage to the roof of Terminal 2 in the baggage claim area and in some of the gate areas. However, all three terminals at Sky Harbor are operational," Rodriguez said in a statement.

Branches and debris littered streets around the city and at least one traffic light was knocked over. Some trees were toppled by the ensuing wind.

The Salt River Project utility said that about 31,000 customers were without power as of Saturday afternoon. Most of the outages were in west Phoenix and suburbs west of Phoenix, with smaller clusters reported in Scottsdale, Mesa and Tempe. Utility officials estimated that power would be restored sometime Saturday afternoon.

SRP spokeswoman Patty Garcia-Likens said the utility was giving ice away to affected customers at two Quick Trip locations.

By early Sunday, less than 17,000 Arizona Public Service customers in the area remained without power, spokeswoman Jenna Shaver told the Arizona Republic. More than 71,000 had been without power earlier.

Phoenix Fire Capt. Benjamin Santillan said firefighters were helping to locate a hiker in south Phoenix stranded by a washed away trail. The woman was hiking with her dog when the rain hit. Santillan said she was able to find her way to a road and crews were using her cellphone signal to find her.

Crews, meanwhile, responded to multiple calls around the city of trees falling on vehicles and small electrical-related fires.

National Weather Service meteorologist Valerie Meyers said a record-breaking 1.6 inches of rain has been reported by late afternoon as the storm was tapering off. That total surpassed the 1.46 inches reported on the same date in 1903.

The weather was a mix of Phoenix's first fall storm and leftover monsoon moisture, National Weather Service meteorologist Marvin Percha said.

In southeast Nevada's rural Moapa Valley, heavy rains brought flooding but authorities said that despite a river cresting at a record high, the damage wasn't as bad as what was caused by high waters in the area earlier in the month.

Clark County Deputy Fire Chief Jon Klassen said the only evacuations occurred in the tiny town of Warm Springs, but he didn't know how many people or homes were affected. Roads to the town were flooded and inaccessible.

David Aguilar said an inch of silt came into his Moapa Valley house along the Muddy River.

"All of a sudden, I heard the sound of water," he told the Las Vegas Review-Journal, adding a water pipe also broke, complicating cleanup efforts.

Other residents said the flood left mud and debris in yards, inundated sheds and other exterior buildings and damaged vehicles.

Authorities responded to cars stuck on Interstate 15, but no one was trapped and the cars were unoccupied, Klassen said.

Interstate 15 just south of Mesquite reopened after flooding closed it in both directions Saturday morning, according to the Nevada Department of Transportation. But southbound travel was reduced to one lane.

In northern Arizona, Flagstaff residents also saw showers, thunder and lightning Saturday. More than an inch of rain fell in isolated areas south of Prescott by the afternoon, meteorologist Megan Schwitzer said. The Weather Service also said that nickel-sized hail was reported near Yarnell.

More From New Jersey 101.5 FM