SWODY2
SPC AC 231728
DAY 2 CONVECTIVE OUTLOOK
NWS STORM PREDICTION CENTER NORMAN OK
1128 AM CST FRI DEC 23 2011
VALID 241200Z - 251200Z
...NO SVR TSTM AREAS FORECAST...
...SYNOPSIS...
AS A NRN STREAM TROUGH MOVES ACROSS NEW ENGLAND EARLY IN THE
PERIOD...A SECOND FEATURE IS PROGGED TO DIG SEWD OUT OF CANADA LATER
IN THE PERIOD AND REACH THE UPPER GREAT LAKES REGION LATE.
MEANWHILE...A CUT-OFF LOW INITIALLY OVER SRN NM/FAR W TX/NRN MEXICO
IS FORECAST TO DRIFT SLOWLY NEWD INTO THE TX S PLAINS REGION THROUGH
THE PERIOD.
AT THE SURFACE...HIGH PRESSURE WILL GENERALLY PREVAIL ACROSS THE
CONUS...WITH THE MAIN SURFACE BAROCLINIC ZONE OFF THE U.S. SRN AND
ERN COASTS. RESULTING COOLER/STABLE AIR WILL PRECLUDE DEEP MOIST
CONVECTION OVER MOST OF THE CONUS.
...PORTIONS OF E TX EWD INTO W CENTRAL MS...
WHILE A STABLE BOUNDARY LAYER WILL PERSIST ACROSS TX IN ADVANCE OF
THE SLOWLY APPROACHING UPPER LOW...LOW-LEVEL WARM ADVECTION/ASCENT
WILL SUPPORT THE DEVELOPMENT OF SHOWERS ACROSS PORTIONS OF ERN/SERN
TX AND LATER ACROSS THE ARKLATEX REGION AND POSSIBLY INTO W CENTRAL
MS LATE. WHILE ANY DESTABILIZATION WILL BE WEAK AND HIGHLY
ELEVATED...A FEW CONVECTIVE ELEMENTS MAY BECOME CAPABLE OF PRODUCING
SPORADIC LIGHTNING -- ESPECIALLY DURING THE SECOND HALF OF THE
PERIOD.
..GOSS.. 12/23/2011
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