SWOD48
SPC AC 240912
DAY 4-8 CONVECTIVE OUTLOOK
NWS STORM PREDICTION CENTER NORMAN OK
0312 AM CST THU JAN 24 2008
VALID 271200Z - 011200Z
AT THE BEGINNING OF THE 4 TO 8 DAY PERIOD...MEDIUM RANGE MODELS SHOW
AN UPPER-LEVEL RIDGE IN THE PLAINS STATES AND THEN QUICKLY DEVELOP
AN UPPER-LEVEL TROUGH OVER THE WRN US BY EARLY NEXT WEEK. THIS
TROUGH IS FORECAST TO MOVE EWD INTO THE PLAINS STATES BY TUESDAY.
AHEAD OF THE SYSTEM...A STRONG LOW-LEVEL JET SHOULD TRANSPORT
LOW-LEVEL MOISTURE NWD INTO THE OZARK REGION WITH THE MOIST AXIS
MOVING EWD INTO THE LOWER MS VALLEY AS A COLD FRONT APPROACHES THE
REGION. IF THIS SCENARIO PANS OUT...A LARGE AREA OF THUNDERSTORMS
WILL BE POSSIBLE FROM EAST TX EXTENDING EWD TO MS AND AL EITHER
MONDAY OR TUESDAY. ALTHOUGH SHEAR PROFILES SHOULD BE ADEQUATE FOR
SEVERE STORMS...THE AMOUNT OF INSTABILITY THAT IS REALIZED WILL
LIKELY DETERMINE IF A SUBSTANTIAL SEVERE THREAT DEVELOPS. ATTM...THE
SCENARIO REMAINS TOO UNCERTAIN TO OUTLOOK AN AREA DURING THE 4 TO 8
DAY PERIOD.
.BROYLES.. 01/24/2008
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