Storm clouds boil up over the office building at 5151 E. Broadway, the start of the evening's monsoon action, Saturday, July 30, 2016, Tucson, Ariz. Kelly Presnell / Arizona Daily Star

Today's forecast calls for monsoon activity to be dialed up a notch, with heavy rains expected to run all day, and possibly overnight. A flash flood watch is in effect for areas to the east of Tucson from 10 a.m. to late tonight, but localized flooding will be a concern for much of the Tucson area.

The potential exists for some parts of town to receive two or more inches of rain in a short period of time, with gusty winds also on the forecast.

High: 87

Low: 72


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