SWODY1
SPC AC 190530
DAY 1 CONVECTIVE OUTLOOK
NWS STORM PREDICTION CENTER NORMAN OK
1230 AM CDT FRI SEP 19 2008
VALID 191200Z - 201200Z
...NO SVR TSTM AREAS FORECAST...
AN UPPER-LEVEL TROUGH IS FORECAST TO GRADUALLY TAKE SHAPE TODAY
ACROSS THE CNTRL STATES. AT THE SFC...A COLD FRONT WILL MOVE SEWD
ACROSS THE DAKOTAS INTO NRN NEB AND CNTRL MN. THUNDERSTORMS SHOULD
BE ONGOING ALONG THE BOUNDARY THIS MORNING AND MAY PERSIST INTO
EARLY AFTERNOON. HOWEVER...LARGE-SCALE SUBSIDENCE SHOULD INHIBIT
CONVECTIVE DEVELOPMENT ACROSS THE UPPER MIDWEST BY LATE AFTERNOON.
FURTHER SOUTH ACROSS THE MID-MS VALLEY AND OZARK PLATEAU...SCATTERED
THUNDERSTORMS SHOULD INITIATE ALONG AN AXIS OF INSTABILITY AS SFC
TEMPS WARM THIS AFTERNOON. WEAK VERTICAL SHEAR IN THIS REGION SHOULD
LIMIT THE POTENTIAL FOR ORGANIZED CONVECTION.
..BROYLES.. 09/19/2008
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