ACUS48 KWNS 220849
SWOD48
SPC AC 220849
DAY 4-8 CONVECTIVE OUTLOOK
NWS STORM PREDICTION CENTER NORMAN OK
0349 AM CDT WED AUG 22 2012
VALID 251200Z - 301200Z
...DISCUSSION...
RELATIVELY QUIESCENT PATTERN FOR HIGHER-END SEVERE COVERAGE IN MOST
OF THE CONUS THIS PERIOD. A SHORT WAVE TROUGH SHOULD DAMPEN AS IT
PROGRESSES ACROSS S-CNTRL CANADA ON D4...WITH A BELT OF STRONG
MID-LEVEL W/SWLYS LARGELY DIVORCED FROM A COLD FRONT PROGRESSING
SEWD IN THE UPPER MIDWEST. THEREAFTER...CONSENSUS OF GUIDANCE HAS
NOW TRENDED TOWARD BUILDING AN UPPER-LEVEL RIDGE ACROSS THE ROCKIES
AS A LARGE-SCALE TROUGH DIGS OFF THE PACIFIC NW COAST.
PRIMARY SEVERE POTENTIAL MAY EVOLVE FROM TC ISAAC WITH ANY POSSIBLE
CONUS LANDFALL. BUT AS NOTED BY NHC/HPC...CONSIDERABLE UNCERTAINTY
EXISTS WITH EXTREMELY LARGE SPREAD IN GUIDANCE OVER THE EVENTUAL
EVOLUTION OF THIS SYSTEM DURING THE PERIOD.
..GRAMS.. 08/22/2012
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