DAY2SVR: Nws Storm Prediction Center Norman Ok

ACUS02 KWNS 310558
SWODY2
SPC AC 310556

DAY 2 CONVECTIVE OUTLOOK
NWS STORM PREDICTION CENTER NORMAN OK
1256 AM CDT FRI AUG 31 2012

VALID 011200Z - 021200Z

...NO SVR TSTM AREAS FORECAST...

...SYNOPSIS...
LARGE-SCALE RIDGING WILL PREVAIL ACROSS MUCH OF THE U.S. THIS
PERIOD...WITH TROUGHING CONFINED TO THE WRN AND NERN CONUS ONLY.
THE EXCEPTION WILL BE WITH THE REMNANTS OF ISAAC...FORECAST TO
LINGER INVOF MO THROUGH THE PERIOD.

THE ONLY OTHER SURFACE FEATURE OF ANY PROMINENCE IS SURFACE COLD
FRONT PROGGED TO CROSS THE NRN HIGH PLAINS REGION THROUGH THE SECOND
HALF OF THE PERIOD...AS AN UPPER LOW SHIFTS EWD ACROSS THE CANADIAN
ROCKIES.

WHILE SHOWERS AND A HIGH-BASED STORM OR TWO MAY DEVELOP DURING THE
AFTERNOON OVER THE HIGH PLAINS REGION...A LACK OF APPRECIABLE
BOUNDARY-LAYER MOISTURE AND SUBSIDENCE/CAPPING ASSOCIATED WITH THE
LARGE-SCALE RIDGING SHOULD HINDER APPRECIABLE CONVECTIVE COVERAGE --
AND THUS STRONGLY LIMIT ANY SEVERE POTENTIAL.

SHOWERS AND THUNDERSTORMS ARE FORECAST OVER SERN VA AND THE
CAROLINAS REGION...BUT GENERALLY MODEST INSTABILITY AND FAIRLY WEAK
FLOW SUGGEST NO MORE THAN A VERY ISOLATED/PULSE-TYPE SEVERE THREAT.

FINALLY...REMNANT CIRCULATION AROUND ISAAC MAY SUPPORT A VERY
LOW-PROBABILITY THREAT FOR AN ISOLATED/BRIEF TORNADO WITH A STRONGER
CELL OR TWO...BUT IN ALL OF THESE AREAS...THREAT DOES NOT APPEAR TO
JUSTIFY INTRODUCTION OF EVEN MINIMAL SEVERE WEATHER PROBABILITY
LINES.

..GOSS.. 08/31/2012

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