SWODY1
SPC AC 181252
DAY 1 CONVECTIVE OUTLOOK
NWS STORM PREDICTION CENTER NORMAN OK
0652 AM CST SUN JAN 18 2009
VALID 181300Z - 191200Z
...NO SVR TSTM AREAS FORECAST...
...CNTRL/ERN GULF CSTL REGION...
BLOCKING PATTERN WILL PERSIST TODAY WITH ERN U.S. TROUGH BEING
REINFORCED BY STRONG SHORTWAVE TROUGH DIGGING SSEWD ACROSS THE MID
SOUTH THIS MORNING. AREA OF THUNDERSTORMS HAS DEVELOPED EARLY THIS
MORNING FROM FAR S-CENTRAL LA INTO THE WRN GULF OF MEXICO ALONG
PERIPHERY OF DEEP ASCENT ASSOCIATED WITH PROGRESSIVE TROUGH...WITH
SHALLOW MOIST CONVECTION INLAND INTO THE SRN APPALACHIANS. ALTHOUGH
SSWLY BOUNDARY LAYER FLOW WILL INCREASE LOW LEVEL MOISTURE ALONG THE
CENTRAL/NERN GULF COAST THROUGH THE DAY /I.E. SURFACE DEW POINTS IN
THE 50S F/...LAPSE RATES AND SUBSEQUENT INSTABILITY WILL REMAIN
POOR. REGARDLESS...DEEP ASCENT AND MARGINAL LOW LEVEL
DESTABILIZATION SHOULD SUPPORT SUFFICIENT INSTABILITY FOR AREAS OF
DEEPER CONVECTION INCLUDING A FEW THUNDERSTORMS ACROSS THE REGION
THROUGH THE AFTERNOON.
..EVANS.. 01/18/2009
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