There were light showers and thunderstorms across the metro area yesterday afternoon - above view of Catalinas at 4:00 pm MST and below shows view to east from Sahuarita at 3:45 pm.
Plot above shows CG flashes detected yesterday afternoon and evening, with considerable CG activity across southern half of Arizona.
Rain reports from yesterday for 24-hours ending at 7:00 am this morning: above from the ALERT network and below from MesoWest. Heaviest reports were from sites west of Green Valley and Tubac.
Here at house we had thunder (reported to me by neighbor John Ferner), but only a light shower that left 0.02" in the gauge - not even enough to wet the open ground.
Map from SPC (above) shows locations of severe storm reports yesterday (through midnight MST). There were isolated reports around the West - report in California was of a semi blown over on I-10.
However, a derecho in northeastern Nebraska produced numerous reports of strong winds and wind damage. The three graphics below show: IR satellite image at 0200 UTC today (note that horse-shoe shaped IR signatures are almost always associated with severe thunderstorms); IR at 0635 UTC middle; and radar base scan from Omaha NWS at 0635 UTC at bottom. Strongest wind gust of 84 mph was measured by an automated surface station at Albion (southwest of Norfolk).
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