The National Weather Service in Tucson has issued an
* Urban and Small Stream Flood Advisory for... northeastern Pima County in Southeast Arizona... this includes the city of Oro Valley... south central Pinal County in Southeast Arizona...
* until midnight MST
* at 902 PM MST thunderstorms were generating moderate to locally heavy rainfall in areas around Oro Valley...Catalina...Oracle Junction...and the Catalina mountains including Summerhaven. Combined with earlier rainfall amounts in the 1/2 to 1 inch range expect heavy flow in normally dry washes and streambeds...as well as localized flooding near some roads.
Excessive runoff from heavy rainfall will cause elevated levels in washes and streams...and ponding of water in urban areas... highways...streets and underpasses as well as other poor drainage areas and low lying spots.
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