SWODY3
SPC AC 040729
DAY 3 CONVECTIVE OUTLOOK
NWS STORM PREDICTION CENTER NORMAN OK
0129 AM CST WED MAR 04 2009
VALID 061200Z - 071200Z
...NO SVR TSTM AREAS FORECAST...
...SRN PLAINS/CNTRL PLAINS AND MID-MO VALLEY...
A WEST SOUTHWEST FLOW PATTERN IS FORECAST ACROSS MUCH OF THE WRN AND
CNTRL STATES FRIDAY AS AN UPPER-LEVEL TROUGH MOVES EWD ACROSS THE
DESERT SOUTHWEST. AHEAD OF THIS SYSTEM...A LOW-LEVEL JET SHOULD
STRENGTHEN ACROSS THE SRN PLAINS ALLOWING MOISTURE TO INCREASE
ESPECIALLY FRIDAY NIGHT. ALTHOUGH SOME INSTABILITY SHOULD DEVELOP
ALONG THE MOIST AXIS...LIMITED LARGE-SCALE ASCENT AND A CAPPING
INVERSION SHOULD KEEP THE CONVECTIVE POTENTIAL AT A MINIMUM.
FURTHER NORTH ACROSS THE CNTRL PLAINS AND MID-MO VALLEY...MODEL
FORECASTS DEVELOP CONVECTION ON THE NOSE OF THE LOW-LEVEL JET ALONG
A COLD FRONT LATE FRIDAY NIGHT. ALTHOUGH THE ACTIVITY SHOULD REMAIN
ELEVATED...FORECAST SOUNDINGS AT 09Z FRIDAY NIGHT SHOW STEEP
MID-LEVEL LAPSE RATES AND STRONG VERTICAL SHEAR. THIS COULD POSE A
MARGINAL HAIL THREAT ACROSS THE MID-MO VALLEY LATE IN THE PERIOD.
..BROYLES.. 03/04/2009
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