SWODY2
SPC AC 041729
DAY 2 CONVECTIVE OUTLOOK
NWS STORM PREDICTION CENTER NORMAN OK
1129 AM CST SUN NOV 04 2007
VALID 051200Z - 061200Z
..NO SVR TSTM AREAS FORECAST...
..SYNOPSIS...
UPPER SHORT-WAVE TROUGH/LOW IS FORECAST TO DIG ESEWD ACROSS THE
UPPER MS VALLEY/UPPER GREAT LAKES REGION THIS PERIOD...RESULTING IN
AN AMPLIFICATION OF THE LARGER-SCALE TROUGH OVER THE ERN HALF OF THE
CONUS. IN CONJUNCTION...A STRONG SURFACE LOW SHOULD MOVE W-E ACROSS
THE UPPER LAKES...WHILE A SHARP COLD FRONT SURGES SEWD ACROSS THE
OH/TN VALLEYS AND SSEWD ACROSS THE PLAINS...AND INTO THE NWRN GULF
BY THE END OF THE PERIOD.
ELSEWHERE...RIDGING ALOFT WILL PREVAIL OVER THE WRN CONUS...WITH AN
UPPER LOW LINGERING OFF THE CA COAST THROUGH THE PERIOD.
..OH/TN VALLEYS INTO THE ARKLATEX...
SHOWERS AND ISOLATED TO SCATTERED THUNDERSTORMS ARE EXPECTED TO
DEVELOP INVOF COLD FRONT DURING THE AFTERNOON FROM THE OH VALLEY
WSWWD TO THE ARKLATEX REGION WITHIN MINIMALLY-UNSTABLE PRE-FRONTAL
AIRMASS. THOUGH IT APPEARS THAT STRENGTH OF DEEP-LAYER WIND
FIELD/SHEAR WOULD BE ADEQUATE TO SUPPORT STORM ORGANIZATION...ATTM
FEEL THAT INSTABILITY WILL REMAIN TOO LIMITED FOR VIGOROUS STORMS.
THUS...WILL NOT INTRODUCE ANY SEVERE PROBABILITIES ATTM.
ANY CONVECTIVE ACTIVITY LINGERING INTO THE EVENING SHOULD DIMINISH
WITH THE LOSS OF HEATING/DIURNAL STABILIZATION.
..UPPER GREAT LAKES...
A FEW LIGHTNING STRIKES MAY OCCUR ACROSS THE UPPER GREAT LAKES
REGION...EMBEDDED WITHIN MORE WIDESPREAD LAKE-EFFECT CONVECTION AS
COLD AIR ALOFT /-30 TO -34 C AT H5/ SPREADS ACROSS THE RELATIVELY
WARM LAKE SURFACES.
.GOSS.. 11/04/2007
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