Aviation Forecast Discussions Data
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(EXTRACTED FROM FXUS65 KPSR 230948)


    South-Central Arizona including KPHX, KIWA, and KSDL...
    Southeast California/Southwest Arizona including KIPL and KBLH:
    
    An upper level low pressure system centered over the Great Basin has
    begun to retreat north-northeastward this evening. Aloft (AOA
    FL100), this will mean weakening southwesterly flow tonight and
    through the day Wednesday. Surface winds will favor southwest and
    west directions until 08Z-09Z before transitioning to familiar
    drainage/downvalley patterns. During the day Wednesday, anticipate
    similar directional patterns as were observed on Tuesday with
    prolonged southeast and south directions lasting well past noon
    before trending southwest during the latter part of the afternoon.
    Otherwise, clear skies.