Friday, May 06, 2011

Hot And Dry Across Southern Arizona



It is a perfectly clear and dry day across Arizona as the drought continues, especially in the southeastern part of the state. Shown above are the 2 pm visible satellite image (top) at 2 pm MST (Friday May 6th) and the concurrent surface observation plot (bottom). Two things of interest on the surface plot - first, the ASOS dewpoint sensors are not functioning correctly at Casa Grande (CGZ) and Ft. Huachuca (FHU). The dewpoints are observed to be in the 30s, but these appear to be way too high. For example, the current dewpoint at the Carr RAWS station (which is a couple of miles south of FHU and at higher elevation in a forested location) currently reports a dewpot of 2F. Second, note the 100+F temperatures observed out along the Colorado River. Here in Tucson, at the airport, highs the last 2 days have been 96F and 95F, with today turning out to be quite similar.

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