Heavy rain also fell over parts of central Tucson.
The National Weather Service issued a severe thunderstorm warning late this afternoon for the Tucson metro area.
Heavy rainfall has caused several city streets in Nogales to flood and city officials are asking Nogales residents to stay indoors and off the road to prevent back ups and problems.
The National Weather Service has downgraded a flash flood warning to a flash flood watch for northeastern Pima County, including the City of Tucson.
Miller Canyon homeowner Ron Morales had to use a tractor to fix this road that was washed out during flooding Monday evening. "The rain was coming down in sheets," said Paul Cimino of the Sierra Vista Fire Department.
Knowing that major rainfall was in the wind, Miller Canyon homeowners had their sandbags up and ready for the flooding.
Cochise County workers using heavy equipment are busy repairing damage from Monday's storm, including this washed-out area on Stoneridge Road in the area severely burned in last year's Monument Fire.
A major monsoon storm walloped Sierra Vista and other Cochise County areas Monday evening - sweeping two people away in a wall of water and leaving some roads and washes flooded early Tuesday.
Severe thunderstorms have left at least 5,000 customers without power this evening and Oracle Road is closed from Limberlost to River Road until at least 11 p.m.
The Tucson area and much of Southeast Arizona are under a flash flood watch until 5 p.m. A flash flood watch means that conditions are becoming favorable for widespread flash flooding to develop.
So, you probably already know monsoon is a season. In the past,
this season was ushered in based on the dew-point data: Have three
days in a row at average dew point of 54 degrees or higher? Well,
then monsoon started on the first of those three days.