Little change in the large-scale pattern. However, the 700 mb anticyclone is centered far to the southwest and 700 mb flow is northwesterly with fairly low moisture contents. A weak shortwave trough is approaching from the west in mid-levels. P chart of the 12 UTC sounding from Luke Air Force Base on July 11, 1994.
Wind speeds are in knots.
The small box indicates the location of Phoenix, and the Salt and Verde River Basins are outlined. Only very isolated thundershowers occurred over the White Mountains.