Heavy showers over west end of Catalinas at 6:00 pm MST yesterday afternoon.
Plot of detected CG flashes (above) for 24-hours ending at 1:03 am early this morning. Plot shows it was very active re thunderstorms across southeastern Arizona (from Atmo and Vaisala). Thunder rumbled here for several hours starting around 4:00 pm. ALERT plot below shows numerous sites with rainfall from Catalinas south through middle of network. We had 0.37" during a brief downpour here. The airport had 0.70" along with thunder and a severe gust to 58 mph; DM did not have strong winds and reported only 0.13" of rain. Atmo had 0.21" of rain.
The 500 mb analysis this morning (above) shows the anticyclone centered over west Texas. The morning sounding (below) shows several old boundary layers, and also indicates some CAPE with lifting needed. Winds are light southerly below 300 mb - so storms that form will be slow moving.
The 12 UTC WRF-RR forecast from Atmo (bottom) forecasts heavy rain amounts over parts of eastern Pima County through midnight tomorrow.
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