A record amount of rain fell in Tucson, with more to come Saturday night, First Alert Meteorologist Cuyler Diggs said
The National Weather Service said .71 of an inch fell at Tucson International Airport, breaking the previous high of .67 of an inch on the same date in 1985.
"Some locations could receive as much as one inch of rainfall by tonight," Diggs said. "Drivers should exercise extra caution as water will be ponding on local roadways."
The Weather Service said parts of Tucson, including areas near Oracle and Ina roads, received 1.25 inches. A rain gauge near Oro Valley Hospital reported .91 of an inch.
Rillito Downs at River and Stone Avenue in Tucson called its horse-racing card Saturday afternoon because of rain, organizers said.
Overton Road between La Cholla Boulevard and La Canada Drive on the Northwest side was closed because of flooding, the Pima County Sheriff's Department reported.
Earlier, rescue crews were called to the Canyon del Oro Wash at Overton for a car stuck in the wash.
The driver was not injured, Sheriff's Deputy Tom Peine told Tucson News Now.
The closure forced some east-west traffic onto Magee Road, where it was backed up Saturday afternoon between La Cholla and Thornydale because of muddy conditions and road construction. Delays were close to 10 or 15 minutes.
Diggs said he expects patchy areas of fog to develop overnight.
"Once the fog burns off Sunday morning, we'll see partly cloudy skies with a some isolated showers," he said.
Another storm system will move into Southern Arizona on Monday, Diggs said, with snow above 6,000 feet elevation.
"Temperatures will be cooler through the middle of the week, but no hard freeze is expected," Diggs said.
The Arizona Department of Transportation reported problems throughout the state, including rockslides near Prescott and Sedona.
Phoenix Sky Harbor International Airport reported nearly three-fourths of an inch, a record for the date.
More than half an inch fell in Phoenix suburbs in the last 24 hours, according to the Maricopa County Flood Control District.
During one deluge Saturday morning, an inch and a half fell in Mesa near Val Vista Road and the Red Mountain freeway.
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