WRF Forecast Quite Good For this Evening

Edited to add additional info on the WRF forecast from Mike Leuthold.

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Bob,
Besides the forecast of a few showers, I wanted to point out that the forecast lows from the WRF yesterday for this morning (Sunday) were excellent as it had the strong morning easterly winds forecast correctly, plus an increase of moisture which lead to a forecast low of 80F. UofA low was 79.3.
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The post below described the WRF forecast for this evening as:

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The Univ. of Arizona, Atmospheric Sciences Dept., high-resolution WRF-GFS forecasts from the 0600 UTC runs last night are quite interesting. The forecast for late this afternoon indicates isolated showers and thunderstorms developing along the border and then extending northward into Santa Cruz and central Pima county.

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The composite radar image above shows some radar echoes in central Pima County a bit after 6pm on Sunday afternoon. The photo is looking north from Kitt Peak about the same time.

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From the NWS a bit before 6 pm -
EXPECT ISOLATED SHOWERS AND THUNDERSTORMS ACROSS THE TOHONO OODHAM
NATION THROUGH 8 PM. RAINFALL AMOUNTS WILL BE QUITE LIGHT...
GENERALLY LESS THAN ONE TENTH OF AN INCH...ALTHOUGH A FEW LOCALES
MAY EXPERIENCE UP TO ONE QUARTER OF AN INCH OF RAINFALL. MOVEMENT
OF THESE SHOWERS AND THUNDERSTORMS WILL BE TO THE WEST AT 10 MPH.