SWODY3
SPC AC 030702
DAY 3 CONVECTIVE OUTLOOK
NWS STORM PREDICTION CENTER NORMAN OK
0102 AM CST FRI DEC 03 2010
VALID 051200Z - 061200Z
...SYNOPSIS...
AN EXPANSIVE UPPER LOW WILL BE CENTERED OVER NEW ENGLAND SUNDAY WITH
BROAD CYCLONIC FLOW OVER THE ERN HALF OF THE CONUS. AT THE
SURFACE...A SPRAWLING AREA OF HIGH PRESSURE FROM THE PLAINS INTO THE
SE WILL KEEP CONDITIONS COOL AND DRY.
TO THE W...AN UPPER RIDGE AXIS WILL BE CENTERED OVER THE
ROCKIES...WHILE A POTENT UPPER SHORTWAVE TROUGH AND SURFACE LOW MOVE
ASHORE THE W COAST LATE IN THE DAY. A FEW THUNDERSTORMS ARE LIKELY
TO OCCUR IN ASSOCIATION WITH THIS TROUGH.
...CNTRL AND NRN CA...
ECMWF AND GFS ARE IN DECENT AGREEMENT WITH A COLD FRONT NEARING THE
CNTRL/NRN CA COAST BY 00Z. STRONG WARM ADVECTION PROFILES AHEAD OF
THIS SHORTWAVE TROUGH WILL MOISTEN THE COLUMN DURING THE DAY WITH
WIDESPREAD CLOUDS LIKELY AND A FEW DAYTIME SHOWERS/THUNDERSTORMS
INTERIOR CA. A MORE ORGANIZED AREA OF CONVECTION IS LIKELY TO EXIST
OFFSHORE WITH THE APPROACHING COLD FRONT AND LOW. INSTABILITY LEVELS
ARE LIKELY TO BE QUITE LOW WITH LITTLE SEVERE THREAT FORESEEN AT
THIS TIME...ESPECIALLY WITH A THREAT AFTER 00Z AND WITH ONLY
MODESTLY COLD MID LEVEL TEMPERATURES AND LAPSE RATES.
..JEWELL.. 12/03/2010
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