Friday, May 19, 2023

Widespread Rainfall Yesterday



Showers along the foothills at 5:45 pm yesterday afternoon. Plot of detected CG flashes (below from Atmo and Vaisala) for 24-hours ending 1:03 am this morning shows thunderstorm activity occurred across northeast Pima County.


ALERT reports (above and below) indicate widespread rainfall with only eight sites not receiving 0.04" or more - heaviest amounts occurred out west of Picture Rocks area. Here at the house we had thunder, wind gusts around 30 mph, but only 0.07" of rain.


The TWC sounding this morning (above) has considerable mixed-layer CAPE, but substantial low-level heating will be needed for storms at low elevations. Winds aloft continue light and variable. The 12 UTC run of the WRF-RR does forecast rain across most of the metro area through midnight tonight (below).

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