Some color on the Catalinas at 6:00 am this morning.
There were a couple of small clusters of CG flashes in eastern Pima County near the mountains yesterday afternoon - plot of CG flashes through 0803 UTC last night shown above (from Atmo and Vaisala). May have been thunder here, but I didn't hear it.
Limited reports of light rainfall amounts across the Alert network through 7:30 am this morning (above and below). There was a very light sprinkle and Trace here late yesterday afternoon.
The morning 500 mb analysis (above from SPC) shows the anticyclone has weakened significantly and moved over the southeastern US. Pattern is very chaotic over the Southwest with slight height gradients and light/variable winds.
Morning sounding from TWC/TUS has appeared (below, also from SPC), so the office must have received a helium shipment. Sounding shows moisture and some CAPE above 700 mb. There are southwest winds of 20 to 30 kts above 500 mb, but light and variable winds below. The current morning forecast from the Forecast office for the airport is shown at bottom.
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