Heavy rain in Nogales, Sonora, flooded the DeConcini Port of Entry at the international border Monday afternoon.

More than 2 inches of rain fell in Nogales, Sonora, and the flooding began about 1 p.m. at the DeConcini port, authorities said.

"Pedestrian traffic was diverted to the Morley Gate, and vehicles were diverted to the Mariposa Port of Entry," said Edith Serrano, a spokeswoman for U.S. Customs and Border Protection.

She said cleanup of the port began shortly before 5 p.m., and it was expected to reopen.

A measurement of 2.05 inches of rain fell five miles south of the border, and "the water piles up and floods downtown Nogales, Sonora," said Jeff Davis, a meteorologist with the National Weather Service in Tucson.

"All the water goes into Nogales, Arizona through the Nogales Wash," Davis said.

The Santa Cruz River was flowing, but there was no major flooding in the county, said Sgt. Chad Matthews of the Santa Cruz County Sheriff's Department. 

The monsoon struck around the Tucson metro area, hitting the eastside, southeast and south of the city on Monday.

The Corona de Tucson area southeast of Tucson received about 2 inches of rain in an afternoon deluge, according to the weather service. Several roads in the area were closed because of flooding.

Heavy rain was also reported west of Tucson as the storms moved away from the city.