PHOENIX -- The Valley faces Day 2 of massive cleanup efforts after hurricane-force winds and rain slammed into the area Thursday night, uprooting trees, downing power lines and ripping the roof off the domed football practice field at Arizona State University.

Thousands remained without power early Saturday. APS customers are being told that they can go to grocery stores to purchase 20 pounds of dry ice for their refrigerators/freezers and APS will reimburse them for the expenditure.

APS brought in crews from Casa Grande, Cottonwood, Prescott and Snowflake to assist with restoration efforts.

The Red Cross set up a cooling at Arcadia High School's Auxiliary Gym at 4703 E. Indian School Road. The public should call the Grand Canyon Chapter of the American Red Cross at (800) 842-7349 for more information.

Phoenix Mayor Phil Gordon, accompanied by other city officials, took an aerial tour Friday morning to assess the damage. There were no reports of serious injuries.

"If you have any problems, don't hesitate to call 911," said Phoenix Fire's Rick Bartee said at a meeting of the city's emergency staff. "Check on your loved ones, the elderly who may be shut in, who may not have power. They need water, they need to be out of the heat."

The Encanto Historic District in Phoenix was among the hardest hit.

In Tempe, the city has scheduled a "Special Storm Related Bulk Debris Pick-Up" to be held on Saturday from 6 a.m. to 1:30 p.m. It is designed to help residents in the Riverside/Sunset neighborhood, which was the hardest hit in the city. Crews will be equipped with collection vehicles and bob-cats to assist with the removal of debris.

Phoenix residents can call the Parks Department at 602-534-9440 to remove trees that have fallen in the street or right-of-way.

In Tempe, Arizona State University officials said the storm damaged the school's new $8.4 million indoor practice facility that's mostly used for football. The fabric roof on the structure was shredded and the bubble dome had completely deflated.

The 103,500-square-foot facility was completed this month.

Mark Brand, ASU's assistant athletic director for communications, said nobody was injured by the storm hitting the practice facility. Power for many downtown traffic signals was out as the Friday commute began, and traffic was backed up along central city surface streets.

Phoenix Sky Harbor International Airport, which was shut down for more than an hour Thursday night, said flight schedules returned to normal after about 500 passengers, whose flights were delayed, spent the night in the airport.

Wylie Bearup of the Phoenix Streets Department said crews faced a daunting task.

"Our priority obviously is to get everything out of the streets so that the traveling public can get through," Bearup said. "We've got some areas that are flooded, we're trying to get those pumped out as quickly as we can. Poles that are down in the street, we're clearing those."

Residents Find Tree Removal Costly

Residents were shocked by the wave of storms that hit about 9 p.m. Thursday.

"Our radar picked up 80 to 100 mile per hour winds just a little bit off the ground," said Paul Iniguez of the National Weather Service in Phoenix, who said the storm system was probably the worst in 15 years and not a typical monsoon storm.

"Rainfall was on the order of half an inch of rain in five to 10 minutes, really high rainfall rates, pretty unusual for around here," he said.

"We've lived here since 1970, and it was probably the most severe thunderstorm we've had,” said Cliff McDowell, who lives in central Phoenix. "The wind was really blowing, and it was a torrential downpour." In his neighborhood, a large tree slammed through the roof of Kathy Westwind's home.

"I just heard a noise around 10:15 or so. I looked at the backyard and it was fine. I looked at the front yard and i just said, 'Oh, my God,'" Westwind said.

She said a large pine tree fell. "It punched a hole in the roof and there's some branches sticking between the roof and the ceiling, and there's a hole in the ceiling of a bedroom," Westwind said.

"We planted that tree in 1976. It was our first Christmas tree in this house, so we're pretty sad about losing it," she said.

While runways and taxiways at Sky Harbor had been cleared of debris Friday, crews still were cleaning up airport property. About 300 trees were down throughout the sprawling airport, and overhead signs were damaged or knocked down.

Terminal 3 and West Air Cargo had roof and water damage. An Aeromexico plane and three United Airlines planes were damaged.

"We had very, very strong winds, heavy rain. All takeoffs and landings were halted for about an hour and 15 minutes last night," said Sky Harbor's Julie Rodriguez.

National Weather Service meteorologist Leslie Wanek said Sky Harbor recorded peak winds of 75 mph, but radar indicated that winds of up to 100 mph in parts of the metro area as the severe storms moved from east to west during about a 3-hour period.

Rainfall was measured in Phoenix at 5 inches an hour -- a rainfall rate equivalent to hurricanes.

Officially, the National Weather Service reported 5.66 inches at Sky Harbor International Airport for the season. Last year, 0.74" fell for the entire monsoon season. The average rainfall during the season is 2.77 inches.

Storms Not Over Yet

Moist and unstable air will continue moving northward into Arizona and California before interacting with a strong west coast trough of low pressure, Weather Watch 5 meteorologists said on Saturday.

The trough will move west to east across the region Sunday into Monday with scattered showers and thunderstorms expected across the entire area.

The best chance for measurable rain will be Sunday and Sunday night before a drier air mass from the northwest moves into the area, confining the daily threat for active weather to the higher terrain the remainder of the work week, forecasters said.

The main threat with the showers and thunderstorms Sunday into early Monday will be heavy rain, with more widespread flooding as possibility, as well as gusty winds in excess of 50 mph.