Heavy storm over this part of town at 5:31 pm MST yesterday afternoon. Down at bottom is view of the Catalinas at 6:00 am this morning.
Plot of detected CG flashes (below - from Atmo and Vaisala) is for 24-hours ending at 3 minutes past midnight last night. There was a CG donut hole over much of the metro area, but overall there was widespread thunderstorm activity across most of Arizona and New Mexico.
Scattered reports of rainfall from the ALERT network (above and below, for 24-hours ending at 7:00 am this morning) with rain focused mostly on the west portion of the network. Thunderstorm here from around 5:00 to 6:00 pm left 0.33" in the gauge. Airport had thunder but only 0.07" of precipitation. There were 10 reports of half an inch or more, and two those exceeded an inch.
The 12 UTC 250 mb analysis (above) shows a weak and chaotic pattern over the Southwest. However, the large cyclone south of the Big Bend is forecast to move slowly westward the next couple of days bringing increased difluence over Arizona, which will help support large-scale vertical motion.
This morning's sounding (above) is similar to yesterday's, but with the winds aloft being mostly light and variable. The 06 UTC WRF-GFS forecast for rainfall through midnight (below) indicates a heavy storm to do a direct hit on the airport. Will be watching to see how today's storms actually evolve.
The NWS Flash Watch continues at least through today.
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