First storm coming off the Catalinas at around 4:00 pm MST yesterday afternoon.
Plot of detected CG flashes (from Atmo and Vaisala) through 0703 UTC last night shows eastern Pima County totally covered.
Plots of observed rainfall across the ALERT network (for 24-hours ending at 6:00 am this morning) indicates that all sites had precipitation, with many reports over an inch and several over two inches. Here at the house we had 1.43", which is heaviest single event so far in 2024.
The reports from SPC for yesterday (above) show a number of severe wind events across south-central Arizona. I estimated gusts of 40 to 50 mph here; TUS reported thunder, gusts to 55 mph, and 1.83" of rain; DM had thunder, gusts to 32 mph, and 0.37" of rain; the rain gauge appears to be out-of-service again at Atmo, where winds gusted to 36 mph. Numerous sites around the area had temperature drops of almost 40 F around 6:00 pm.
The morning sounding from TWC/TUS (above) shows a deep onion shape, with quite a cool layer below 800 mb. Winds aloft are basically northerly, with strongest speeds up around 200 mb. The 500 mb anticyclone is centered over the northern GoC and is forecast to shift east-northeastward into New Mexico during the weekend.
The 12 UTC WRF-HRRR (above) forecasts just a bit of light precipitation through midnight in eastern Pima County. Given the widespread rainfall yesterday, and this morning's sounding, it should basically be a down day today. The current morning forecast from TUS NWS (below) seems a bit optimistic regarding rain POPs at the airport today and tonight. Time will tell.
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