MESOSCALE DISCUSSION 1492
   NWS STORM PREDICTION CENTER NORMAN OK
   0926 PM CDT SUN JUL 03 2011
   
   AREAS AFFECTED...PORTIONS S-CENTRAL/WRN AZ...SERN CA.
   
   CONCERNING...SEVERE THUNDERSTORM WATCH 591...
   
   VALID 040226Z - 040430Z
   
   THE SEVERE WEATHER THREAT FOR SEVERE THUNDERSTORM WATCH 591
   CONTINUES.
   
   TWO PRIMARY COLD POOLS ARE EVIDENT ATTM...WITH RELATED OUTFLOW
   BOUNDARIES ANALYZED AT 02Z AS FOLLOWS...
   1. WRN PORTIONS LAS AREA TO NEAR EED THEN SEWD ACROSS SRN PORTIONS
   MOHAVE/YAVAPAI COUNTIES TO NERN MARICOPA COUNTY...MOVING SWWD INTO
   WW AREA ACROSS AZ PORTION.
   2. CENTRAL YUMA TO ERN LA PAZ COUNTY...SPREADING NWWD ABOUT 30 KT
   TOWARD LOWER CO RIVER AREA.  BOUNDARY ARCHES EWD ACROSS SWRN YAVAPAI
   COUNTY...INTERSECTING OUTFLOW FROM NRN CONVECTION.
   
   TSTMS HAVE DEVELOPED ALONG BLENDED OUTFLOW/LIFT ZONE FROM SWRN
   YAVAPAI COUNTY ESEWD ACROSS ERN MARICOPA COUNTY.  DESPITE PASSAGE OF
   SRN OUTFLOW BOUNDARY ACROSS PHX AREA...ACCORDINGLY MODIFIED 00Z RAOB
   SHOWS DEEP/WELL-MIXED SUBCLOUD LAYER STILL PRESENT WITH SFC TEMPS
   NEAR 100 ..IN SUPPORT OF STG-DAMAGING DOWNDRAFT POTENTIAL FROM TSTMS
   MOVING WWD FROM AREAS E-NE OF PHX.  ADDITIONAL DEVELOPMENT OVER LA
   PAZ COUNTY ALSO MAY REINFORCE OUTFLOW IN SUPPORT OF GUST POTENTIAL
   BETWEEN EED-BLH...WHERE CORRIDOR OF 300-800 J/KG MLCAPE...DCAPE OVER
   1000 J/KG AND SUPPORTIVE SELY MIDLEVEL WINDS WILL CHARACTERIZE
   PRE-STORM/PRE-OUTFLOW ENVIRONMENT.
   
   ..EDWARDS.. 07/04/2011
   
   
   ATTN...WFO...FGZ...PSR...VEF...SGX...
   
   LAT...LON   32711552 33791633 35161645 35101475 34451295 33651087
               33441201 33351356 32231407 32711552