About as exciting as the weather got yesterday (Labor Day 2009) - little orphan Cb north side of Catalina Mountains.
Was quite suppressed yesterday with storms able to form weakly only on the higher elevations. Apparently dry and warmer middle-level air advected in from the northeast between 700 and about 550 mb, limiting CAPE and increasing CIN and in general making the afternoon environment more hostile to convection.
Although the day-today changes were subtle, coverage of precipitation varied quite a bit day-to-day over the Holiday weekend. Rainfall coverage over Arizona 33 (Metro Tucson aka Eastern Pima County) was about: 20% on Friday; 30% on Saturday; 60% on Sunday; and only 13% on Monday.
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