This morning (February 8, 2012) dawns with heavy middle and high cloud locally, as per webcam view of the Catalinas (above). In contrast, Kitt Peak is currently in the clouds, as per ghostly image below. The moisture has ridden in on southerly winds to the east of the 500 mb closed low that is moving southward along the northern coast of Baja.
Current composite radar image (above) indicates that there may be some sprinkles around southeastern Arizona, but the echoes are mostly from the heavy cloud cover. This morning's run at Atmo of the WRF-GFS forecast model indicates little precipitation accumulated through 5 am on Friday the 10th (below). What measurable rainfall there is in the forecast occurs over the far southeast corner of Arizona.
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