SPC AC 190056
DAY 1 CONVECTIVE OUTLOOK
NWS STORM PREDICTION CENTER NORMAN OK
0756 PM CDT SAT JUL 18 2009
VALID 190100Z - 191200Z
...THERE IS A SLGT RISK OF SVR TSTMS ACROSS THE SOUTHERN HIGH
PLAINS...
...THERE IS A SLGT RISK OF SVR TSTMS ACROSS SOUTH CENTRAL AZ...
...SOUTHERN HIGH PLAINS...
REGIONAL WIND PROFILERS AND 00Z OBSERVED RAOBS SAMPLE AMPLE LOWER
TROPOSPHERIC VEERING BENEATH RELATIVELY STRONG /35-50 KT/
NORTH-NORTHWESTERLY MID-HIGH LEVEL FLOW /5-9 KM/. SOUTHWARD MOVING
QUASI-DISCRETE SEVERE STORMS/SUPERCELLS SHOULD CONTINUE TO
MERGE/GROW UPSCALE THROUGH MID EVENING ACROSS THE EASTERN NM/WEST TX
HIGH PLAINS...POTENTIALLY INTO A FAIRLY ORGANIZED/MODESTLY
ACCELERATING QUASI-LINEAR CONVECTIVE SYSTEM. AS SUCH...DAMAGING
WINDS AND BOUTS OF LARGE HAIL WILL CONTINUE GENERALLY THROUGH
MID/LATE EVENING...WITH A SEVERE QLCS POTENTIALLY REACHING THE
TRANSPECOS REGION OF SOUTHWEST TX TOWARD/AFTER MIDNIGHT.
...SOUTHERN AZ...
PRIOR CLUSTER OF STORMS...WITH WESTWARD MOVING OUTFLOW MOVING ACROSS
THE LOWER CO RIVER VALLEY EARLY THIS EVENING...HAS SEEMINGLY
STABILIZED FAR SOUTHERN AZ. HOWEVER...TSTMS CONTINUE TO INCREASE
OVER THE HIGHER TERRAIN TO THE EAST OF PHOENIX/NORTH OF TUCSON. WITH
RELATIVELY STRONG EASTERLY STEERING FLOW SAMPLED BY THE 00Z TUCSON
OBSERVED RAOB /20-30 KT/...STRONG WINDS/BLOWING DUST WILL BE
POSSIBLE WITH ANY STORMS THAT REACH/CROSS THE DESERT FLOOR THIS
EVENING.
..GUYER.. 07/19/2009
CLICK TO GET WUUS01 PTSDY1 PRODUCT
NOTE: THE NEXT DAY 1 OUTLOOK IS SCHEDULED BY 0600Z
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