SWODY2
SPC AC 190544
DAY 2 CONVECTIVE OUTLOOK
NWS STORM PREDICTION CENTER NORMAN OK
1244 AM CDT SUN OCT 19 2008
VALID 201200Z - 211200Z
...NO SVR TSTM AREAS FORECAST...
...SYNOPSIS...
FAIRLY PROGRESSIVE PATTERN ALOFT FORECAST ACROSS THE U.S. THIS
PERIOD...WITH SEVERAL TROUGHS AFFECTING THE LOWER 48 THROUGH THE
PERIOD.
AT THE SURFACE...A COLD FRONT IS FORECAST TO MOVE EWD ACROSS THE
MIDWEST/OH VALLEY REGION...IN CONJUNCTION WITH A MID-LEVEL TROUGH
FORECAST TO DIG SEWD ACROSS THE GREAT LAKES REGION. THE TRAILING
PORTION OF THIS FRONT IS FORECAST TO SAG SLOWLY SWD ACROSS THE
PLAINS.
...THE ROCKIES/HIGH PLAINS...
AN UPPER TROUGH SHIFTING ACROSS THE ROCKIES THIS PERIOD SHOULD
SUPPORT SHOWER/STORM DEVELOPMENT ACROSS A LARGE PORTION OF THE WEST.
A LOW-PROBABILITY POTENTIAL FOR SOMEWHAT MORE SIGNIFICANT
CONVECTION APPEARS TO EXIST OVER THE SRN HIGH PLAINS...WHERE THE
APPROACHING TROUGH ATOP LOW-LEVEL FLOW ASCENDING ISENTROPICALLY ATOP
THE SURFACE FRONT SUPPORT CONVECTIVE DEVELOPMENT. ATTM...IT APPEARS
THAT THE PRE-FRONTAL BOUNDARY LAYER WILL REMAIN CAPPED...AND THAT
POST-FRONTAL INSTABILITY WILL REMAIN LIMITED. HOWEVER --
FAVORABLY-VEERING/SHEARED FLOW WITH HEIGHT SUGGESTS THAT A FEW MORE
VIGOROUS STORMS COULD DEVELOP IN PROXIMITY TO THE SURFACE FRONT.
..GOSS.. 10/19/2008
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