UPDATE: 4:45 p.m.
As of 3:15, northbound I-17 is completely open, according to the Department of Public Safety.
In Black Canyon City, the Red Cross will keep its emergency shelter open overnight, in case of additional flooding. At this time, no one is using the shelter, according to the Yavapai County Sheriff's Office. The YCSO Swift Water team is remaining in the area, assessing the river conditions should a rescue become necessary.
Anyone concerned may watch the alert box at www.ycsoaz.gov for any further major updates.
UPDATE: 1:45 p.m.
Flood advisory for Prescott until 5:15 p.m.
The National Weather Service has issued a small stream flood advisory for Prescott until 5:15 p.m.
Granite Creek gauges are showing a 2-3-foot rise in the creek after morning rains, and additional heavy rain is headed toward the area that will cause the creek to rise higher.
The advisory area includes Williamson Valley Wash, Granite Creek, Willow Creek, Bottleneck Wash, Little Chino Valley, Antelope Wash and Lynx Creek.
UPDATE: 12:58 p.m.
PHOENIX (AP) - Flooding from heavy monsoon season rains in the Phoenix area forced authorities Tuesday to close several major roads, including a portion of Interstate 17, while elsewhere firefighters rescued multiple motorists and a small trailer park was evacuated.
The National Weather Service issued a flash flood warning for much of the metro area and north of the city where up to 8 inches of rain had fallen in some of the mountainous regions along the interstate.
The storms are expected to affect a large area of the state throughout the day.
"It's like a conveyor belt of showers coming through here," National Weather Service meteorologist Ken Waters said. "We're seeing new cells popping up in the Phoenix area and just outside the Phoenix area."
Sporadic storms are expected to continue in the area for the next few days.
"There's a lot of concern about flash flooding," Waters said.
The Yavapai County Sheriff's Office evacuated the River's Edge Trailer Park in Black Canyon City late this morning as the adjacent Agua Fria River is rising nearly eight feet higher than flood stage.
Heavy rains also have caused numerous rockslides on Interstate 17, so travelers should be extremely cautious.
The Yavapai County Sheriff's Office has closed numerous roads throughout the county because of flooding after heavy rains Monday and today.
In Black Canyon City, the closed roads are Maren Avenue, Tara Springs low-water crossing, Maggie Mine Road at the end of pavement, and Squaw Valley Road at the Agua Fria crossing. In Cordes Lakes, Thunderbird and Brahma are closed where they cross the Big Bug Creek. In Mayer, Central Avenue is closed at the Big Bug crossing. And in Lake Montezuma, Montezuma Avenue is closed at Russell Wash, Beaver Creek Road is closed at Beaver Creek School, and Bice Road is closed 0.7 miles from Beaver Creek Road.
Deputies are now patrolling the lowland areas along the Agua Fria River in Black Canyon City to determine whether more evacuations will be necessary. The Yavapai County Emergency Management Division and Yavapai County Flood Control District are assisting.
Approximately 15 people were evacuated by 11:30 a.m., and the Red Cross is setting up a shelter at Canon Elementary School, 34630 School Loop Rd. Red Cross also is deploying Animal Disaster Services to care for pets.
The trailer park is located near East Perry Buchanan Road and South Shadow Mountain Road next to the Agua Fria River.
The National Weather Service office in Flagstaff issued a flood warning for the Agua Fria River and its Squaw Creek tributary in Black Canyon City at 10:33 a.m. that will last until 8:15 p.m. today.
Heavy rainfall caused rapid rises on the river and creek in the Black Canyon City area, the Weather Service reported.
The river gage on the Agua Fria at Rock Springs measured 35,000 cfs with a depth of 23.6 feet at 10:15 a.m. Flood stage is 16 feet.
The Weather Service estimates the river will continue to flood over its banks through at least 2 p.m. today. Additional rainfall would extend that time frame.
A trained spotter reported 3 inches of rain in Black Canyon City by 8:45 a.m. today, with rock slides on Interstate 17 between mile markers 250 and 242.
Another spotter reported 1.76 inches of rain about three miles east of Cordes Lakes at 8:31 a.m. today, causing the Big Bug Creek to top its banks and cover a local road with about a foot of water.
A third spotter reported 3.02 inches of rain two miles west-southwest of Cordes Junction at 8:40 a.m., while another reported washes flooding three miles north of Cleator after 1.39 inches of rain fell in an hour in Cleator.
The Weather Service is warning travelers not to drive over low-water crossings on the Agua Fria River from Rock Springs to Lake Pleasant.
The Weather Service issued a small stream flood advisory for south central Yavapai County that includes Cordes Junction, Black Canyon City and the strip between them from the Bradshaw Mountains east to I-17. It expired at 10:15 a.m. Drainages in this advisory included Castle, Turkey, Poland, Bear and Tuscumbia creeks as well as Badger Springs Wash.
The Weather Service also issued a small stream flood advisory for southeastern Yavapai County until 10:30 a.m. today because of heavy rain. The advisory area included all of the Verde River below Childs as well as Badger Springs Wash and Big Bug Creek.
Much of Yavapai County remains saturated from heavy rains Monday, including east Prescott and Walker where a nearly stationary thunderstorm produced heavy rain around 6 p.m. Monday and prompted the Weather Service to issue a flood advisory.
Jerome, Clarkdale and Cottonwood also were hit with a strong storm late Monday afternoon.
Preliminary Weather Service estimates show 2.52 inches of rain fell in Prescott Monday, 2 inches in Bagdad, 1.72 inches in Cottonwood and 0.76 inches in Jerome.
Follow Joanna Dodder on Twitter @joannadodder.