Thursday, July 13, 2017

Quick Summary Last Evening

Sunrise this morning from along the Rillito. Two rain events in 3 days has brought out the flying ants and toads, plus a surprising number of walkers, runners, and riders along the Rillito around sunrise when it is very humid.

Thunderstorms rolled in a bit after 9:00 pm MST last evening, and the 06 UTC WRF-GFS forecast had almost perfect timing for this event. The CG flash density plot (above from and Vaisala) shows the thunderstorm activity was concentrated in eastern Pima and Santa Cruz Counties.

The ALERT rainfall for 24-hours ending at 6:30 am this morning is below. Heaviest rains of over an inch occurred up in north end of mountains and around Catalina. There was donut hole over the southeast metro area that apparently resulted when new storms developed well to west and storms heading into that part of City dissipated. There were 19 sites that had less than 0.04" or no rain - airport and DM had trace or nothing. Here at house we measured 0.35" in the gauge this morning.

These two photos were taken Tuesday morning the 11th when the Rillito was flowing and there was stratus fractus hanging on the Catalinas.

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