Tuesday, August 03, 2010

Drying Across Southeast Arizona




Top image shows a nice view of Catalinas with good visibility and only mare's tail cirrus clouds present. Significant drying has filtered into southeast Arizona during last 12 hours or so, both from the Pacfic and from northwest Mexico. The TWC sounding (middle image from SPC) indicates little to no CAPE, and has dried considerably at mountain-top levels also. The bottom image from the RAWS station up in the Rincon Mountains shows a time series of T, Td, and RH, with Td dropping steadily since late yesterday. So, even through southeastern Arizona will remain predominantly under the influence of the 500 mb, subtropical, anticyclone for next several days, there is not much weather in sight, except perhaps for some isolated mountain storms.

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