SWODY3
SPC AC 280650
DAY 3 CONVECTIVE OUTLOOK
NWS STORM PREDICTION CENTER NORMAN OK
1250 AM CST WED NOV 28 2007
VALID 301200Z - 011200Z
..NO SVR TSTM AREAS FORECAST...
..SYNOPSIS AND FORECAST...
SOME AMPLIFICATION OF LARGE-SCALE PATTERN IS FORECAST DURING THE DAY
THREE PERIOD AS WRN U.S. TROUGH INTENSIFIES...FORCING THE OPENING
AND NEWD EJECTION OF CLOSED...UPPER LOW RESIDING OFF BAJA CA. THE
GFS AND ECMWF ARE MUCH MORE PROGRESSIVE THAN NAM GUIDANCE IN THE
NEWD MOVEMENT OF THIS OPENING WAVE...SUGGESTING THAT IT WILL BE
LOCATED OVER THE SRN ROCKIES BY SATURDAY MORNING. IN THE LOW
LEVELS...CONSIDERABLE VARIABILITY EXISTS IN LOCATION OF PRIMARY
SURFACE FRONT WITH BOUNDARY LOCATION RANGING FROM CNTRL PLAINS /PER
GFS/ TO TX /PER NAM/ BY SATURDAY MORNING.
IN ANY EVENT...STRONGER LARGE-SCALE FORCING FOR ASCENT AND VERTICAL
SHEAR WILL INCREASE ACROSS AZ FRIDAY NIGHT. HOWEVER...INSTABILITY
WILL REMAIN QUITE LIMITED AND ANY DEVELOPING CONVECTION SHOULD
REMAIN RELATIVELY SHALLOW IN NATURE. NO SEVERE WEATHER IS EXPECTED.
.MEAD.. 11/28/2007
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