Saturday, April 28, 2018

Brief Look At Yesterday

There was a bit more cloudiness overhead than I expected yesterday. The evening sounding from TWC (above) indicates that the middle-level moisture persisted and that the WRF predicted sounding was too dry above 500 mb. The GEFS plumes for parts of Arizona and New Mexico produced too much QPF; however, the WRF-GFS was quite accurate for the three days leading up to yesterday. Regardless, there was perhaps a sliver of CAPE present from about 600 to 400 mb, This allowed deep enough clouds to develop, at cold temperatures, and produce some ice and snow virga. Net result was a colorful sunset.

The regional plot of detected CG flashes (from Atmo and Vaisala) below is for 24-hours ending at 1:00 am MST this morning. Arizona was totally devoid of CG flashes and over in New Mexico there were CGs and a thunderstorm or two over Catron County, southwest of the Large Array. As far as precipitation, I found only a couple of sites along the Rim Country that measured a hundredth or two. 

Looks like April will wind down as a windy and dusty, but rainless month here.

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