Regional surface plot for 7 am MST this morning (above) indicates rain or snow extending from west Texas and northern Mexico northward into southern Utah and southwestern Colorado. The 12 UTC skewT plot for the Tucson sounding (immediately below) shows a mostly saturated atmosphere in place, with more than an inch of Precipitable Water, but only a touch of CAPE at this time - which fits with the lack of any detected CG flashes so far. Tucson radar composite reflectivity, also at 7 am (2nd below), indicates moderate to heavy rain mostly east of metro area at this time.
Rainfall amounts so far (through 7 am MST) over the ALERT network are very heavy in the high elevations of the Catalinas and also across Redington Pass area - note two stations reporting amounts over 3 inches. There is no flow yet in the Rillito at Dodge, but I suspect washes on all sides of the Catalinas will soon be flowing, so caution is advised for morning commuters.
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