Storms yesterday, given that winds aloft through the troposphere became nearly calm during the afternoon, were very much classic single pulse, with rapid growth, heavy rain out, and orphan anvil. Top image is 2 pm view from Computer Science webcam showing building towers over the Catalinas. Bottom photo from John Diebold - taken a bit after 4 pm looking northwest from Shannon and Ina toward Marana. So, brief, local heavy storms (see also image in previous post looking south from Kitt Peak), most on higher terrain, but a few building out in the desert.-------------------------------------------------
Here at the house we had thunder from a short-lived storm that built in the foothills just off to the northeast - not a drop of rain. The heavy rainshafts mostly avoided any gauges, so areal coverage was quite restricted. In the ALERT netwrok 10 sites had rainfall during the afternoon when I checked at 5 pm - only 2 more picked up rain after 5 pm. Amounts were light except for 0.79" at Altar Wash in the six hours ending at 5 pm. None of the routine reporting stations had rain, although several had thunder. Seven of the RAWS stations in southeast Arizona had very light rain (less than a tenth of an inch except for 0.29" at Rincon). So a day with moderate instability, good sunshine and very light winds aloft - could have been a much better day. So it goes this summer.
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