After a couple of mostly suppressed days, there was an increase in storm activity yesterday, However, storms from the Vail area skirted to the south parts of Tucson and then lined up for awhile out to the west. The Alert network had 40 stations with rain and 7 of these had more than an inch.
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Today's (Sunday July 24) Tucson sounding indicates a poor vertical wind shear profile (the 250 mb anticyclone is poorly positioned and the profile had become uni-directional by last evening), but with continued high moisture and moderate CAPE. There appears to be substantial elevated CAPE, which will favor storms, even though the surface laer is now quite cool. Zone of activity today should extend west to the coastal mountains of Californis - San Diego sounding has CAPE above the maritime surface layer! More heavy rain and wet microburst activity,but storms may move erratically, given the lack of well-defined steering flow.
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