DAY2SVR: Nws Storm Prediction Center Norman Ok

ACUS02 KWNS 151638
SWODY2
SPC AC 151637

DAY 2 CONVECTIVE OUTLOOK
NWS STORM PREDICTION CENTER NORMAN OK
1137 AM CDT SAT SEP 15 2012

VALID 161200Z - 171200Z

...NO SVR TSTM AREAS FORECAST...

...SYNOPSIS...
AN AMPLIFIED UPPER TROUGH WILL MOVE SEWD INTO THE NRN PLAINS AND
UPPER MS VALLEY THROUGH THE PERIOD...WITH A COLD FRONT EXTENDING
FROM NWRN WI INTO SERN SD AND WRN NEB BY 00Z WITH ISOLATED STORMS
POSSIBLE NEAR THE FRONT. ELSEWHERE...A MOIST AIR MASS WILL REMAIN
FROM ERN TX EWD ACROSS THE SERN STATES WITH SCATTERED DAYTIME WEAK
STORMS.

...SERN SD...SRN MN..NRN IA...SWRN WI...
MOST OF THE DAY WILL BE CONVECTION-FREE...BUT HIGH BASED STORMS ARE
EXPECTED BY LATE AFTERNOON OVER PORTIONS OF SERN SD AND NERN NEB
WHERE STRONG HEATING WILL OCCUR. INSTABILITY WILL BE WEAK...BUT
GUSTY WINDS MAY OCCUR WITH ANY STORMS. FARTHER E...CAPPING WILL
INHIBIT DIURNAL DEVELOPMENT BUT AS THE FRONTAL ZONE DEEPENS WITH
TIME...A FEW STORMS MAY DEVELOP EWD ALONG THE FRONT. WITH COOL AIR
ALOFT AND SOME SHEAR...WILL MAINTAIN A CONDITIONAL SEVERE AREA FOR
MARGINAL HAIL.

..JEWELL.. 09/15/2012

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