Pre-sunrise color at about 5:10 am MST looking toward the Rincons this morning, the first day of September.
Plot of detected CG flashes through 1033 UTC last night shows thunderstorms occurred over western parts of eastern Pima County yesterday afternoon.
ALERT observations show widely scattered amounts of 0.04" and more, with most reports on northwest side of the Catalinas. Here at house there was a brief shower that left 0.03" in the gauge. I did not hear any thunder. The airport reported a thunderstorm with gusts to 53 mph and 0.07" of rain; Atmo had 0.02"; while DM did not report any rainfall.
The 500 mb anticyclone (above from SPC) is centered over Colorado this morning, with a hint of an inverted trough to our east. The morning sounding (below, also from SPC) continues to be not very impressive, but with some CAPE above 700 mb. I was wrong about yesterday's sounding and showers here, so I'll just say that I'll be surprised, again, if we have showers here today.
The 12 UTC WRF-HRRR forecast through midnight tonight (above, from Atmo) forecasts little for all of Pima County. Current NWS forecast is shown below.
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