SWODY1
SPC AC 191241
DAY 1 CONVECTIVE OUTLOOK
NWS STORM PREDICTION CENTER NORMAN OK
0741 AM CDT SUN OCT 19 2008
VALID 191300Z - 201200Z
...NO TSTM AREAS FORECAST...
...SYNOPSIS/FORECAST...
MULTI-STREAM AND LARGELY ZONAL UPR FLOW REGIME WILL EXIST ACROSS THE
COUNTRY TODAY AS THE SHORTWAVE TROUGH ALONG THE E CST DEPARTS INTO
THE ATLC BASIN. PENETRATION OF A DRY CONTINENTAL POLAR AIR MASS
DEEP INTO THE GULF OF MEXICO IN WAKE OF THE TROUGH WILL RENDER MOST
OF THE CONUS TOO STABLE TO SUPPORT DEEP MOIST CONVECTION.
HOWEVER...A COUPLE OF LOW-AMPLITUDE DISTURBANCES EMBEDDED WITHIN THE
SRN BRANCH WILL PRODUCE HIGH-LEVEL CONVECTION...ESPECIALLY OVER THE
GRT BASIN AND ACROSS PORTIONS OF THE CORN BELT. A LIGHTNING STRIKE
OR TWO CANNOT BE RULED OUT OVER PARTS OF NEB AND IA THIS AFTN...BUT
THE PROBABILITY WILL FALL WELL BELOW THE 10 PERCENT THRESHOLD FOR
GENERAL TSTMS.
..RACY.. 10/19/2008
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