Storms began forming early afternoon yesterday, as shown in this view of the Catalinas at about 1:30 pm MST.
Storms moved more slowly than I'd expected and were not well organized - this led to several spots with very heavy local rainfall, as per ALERT plot above for 24-hours ending 7:00 am. The heavy rains correspond well with the CG clusters shown in plot below (CG flashes for 24-hours ending at 6:00 am this morning - from Atmo and Vaisala). We were between several cells here and only had thunder and 0.15". Note 11 ALERT sites with over an inch and 1 with over two inches. Airport had 1.34".
The evening sounding from TWC (above) shows that the nice morning wind profile had deteriorated significantly, explaining the observed storm behavior. The T/Td time series from Atmo shows a T drop of almost 30 F, while they were receiving 0.61" (below).
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