DAY2SVR: Nws Storm Prediction Center Norman Ok

ACUS02 KWNS 240558
SWODY2
SPC AC 240557

DAY 2 CONVECTIVE OUTLOOK
NWS STORM PREDICTION CENTER NORMAN OK
1257 AM CDT MON SEP 24 2012

VALID 251200Z - 261200Z

...NO SVR TSTM AREAS FORECAST...

...SYNOPSIS...
AN UPPER LOW CENTERED INVOF ERN PORTIONS OF HUDSON BAY EARLY IN THE
PERIOD WILL WEAKEN SLIGHTLY WITH TIME...WHILE DRIFTING EWD ACROSS
NRN QUEBEC. HOWEVER...A SHORT-WAVE TROUGH DIGGING SEWD TOWARD THE
UPPER GREAT LAKES WITHIN THE CYCLONIC FLOW FIELD SURROUNDING THIS
SYSTEM WILL MAINTAIN A BELT OF STRONGER WLYS ACROSS THE OH
VALLEY/MIDWEST REGION. ELSEWHERE...WHILE A WEAK UPPER LOW MOVES
ACROSS THE UT/CO REGION AND A SECOND WEAK TROUGH CROSSES WA/NRN ID
AND EVENTUALLY WRN MT...THE OVERALL FLOW FIELD ALOFT ACROSS THE U.S.
WILL REMAIN GENERALLY WEAK.

AT THE SURFACE...A WEAK FRONT EXTENDING FROM THE GREAT LAKES REGION
SWWD INTO THE OK/TX PANHANDLE REGION WILL MAKE LITTLE PROGRESS THIS
PERIOD -- PARTICULARLY FROM THE MIDWEST/OH VALLEY AREA SWWD. THIS
FRONT -- AND A ZONE OF WARM ADVECTION AHEAD OF IT -- WILL SUPPORT
PERSISTENT CONVECTION...WITH PRIMARILY DIURNAL SHOWERS AND STORMS
ALSO FORECAST ACROSS MUCH OF THE INTERMOUNTAIN WEST.

...MID AND LOWER OH VALLEY REGION WWD INTO ERN KS...
ELEVATED CONVECTION IS EXPECTED TO BE ONGOING AT THE START OF THE
PERIOD ACROSS THIS REGION...WHICH SHOULD DIMINISH WITH TIME LEAVING
CLOUDS AND SCATTERED SHOWERS THROUGH MIDDAY.

THE CLOUDS AND LINGERING PRECIPITATION ACROSS THE AREA SHOULD HAMPER
APPRECIABLE DESTABILIZATION IN MOST AREAS -- WHICH WILL TEMPER
SEVERE POTENTIAL. STILL...SOME INCREASE IN CONVECTION WILL OCCUR
THROUGH THE AFTERNOON...WHERE POCKETS OF WEAK DESTABILIZATION CAN
OCCUR. WITH A BELT OF STRONGER /35-45 KT/ MID-LEVEL WLYS ACROSS THE
AREA DURING THE AFTERNOON AND EVENING...A FEW SLIGHTLY MORE ROBUST
STORMS/STORM CLUSTERS MAY OCCUR...WITH MARGINAL HAIL AND A FEW
STRONGER WIND GUSTS POSSIBLE WITH THESE STORMS. ANY SEVERE
POTENTIAL WILL WANE INTO THE EVENING AS SUNSET USHERS IN LOW-LEVEL
AIRMASS STABILIZATION.

..GOSS.. 09/24/2012

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