SWODY1
SPC AC 311957
DAY 1 CONVECTIVE OUTLOOK
NWS STORM PREDICTION CENTER NORMAN OK
0157 PM CST SAT JAN 31 2009
VALID 312000Z - 011200Z
...NO TSTM AREAS FORECAST...
...SYNOPSIS...
EARLY AFTERNOON SURFACE/STREAMLINE ANALYSES INDICATED THE CENTER OF
A HIGH PRESSURE LOCATED OVER THE NWRN GULF OF MEXICO. THIS FEATURE
WILL SHIFT EWD THIS FORECAST PERIOD ALLOWING SURFACE TRAJECTORIES TO
VEER TO SSELY ACROSS THE WRN GULF AND SUPPORT A NWD RETURN OF
MODIFYING GULF MOISTURE. THIS WILL OCCUR CONCURRENTLY ALONG AND S
OF A RETREATING SURFACE BOUNDARY...WHICH CURRENTLY EXTENDED ESEWD
ACROSS THE SRN GULF BASIN.
WEAK FORCING ATTENDANT TO SEVERAL SRN STREAM IMPULSES WILL SPREAD
EWD ACROSS NRN MEXICO. LOW LEVEL WAA IS EXPECTED TO INCREASE
TONIGHT ALONG THE RETREATING SURFACE BOUNDARY AS LOW LEVEL WINDS
VEER TO SLY AND STRENGTHEN SOME IN RESPONSE TO HEIGHT FALLS
ATTENDANT TO AN AMPLIFYING CENTRAL U.S. LONG WAVE TROUGH. IT
CONTINUES TO APPEAR THAT MOISTENING/DESTABILIZATION WILL NOT BE
SUFFICIENT TO SUPPORT TSTMS PRIOR TO 12Z SUNDAY. IN ADDITION...
INHIBITION LIKELY WILL REMAIN TOO STRONG FOR SURFACE-BASED STORMS IN
THE OFFSHORE WATERS...ALTHOUGH CONVECTION MAY BECOME DEEP ENOUGH FOR
LIGHTNING NOT TOO LONG AFTER 12Z SUNDAY OFF THE MIDDLE TX COAST.
..PETERS.. 01/31/2009
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