[SWODY1] SWODY1

[Severe Weather Outlook Day 1]

ACUS01 KWNS 201235
SWODY1
SPC AC 201233

DAY 1 CONVECTIVE OUTLOOK  
NWS STORM PREDICTION CENTER NORMAN OK
0633 AM CST WED DEC 20 2006

VALID 201300Z - 211200Z

...NO SVR TSTM AREAS FORECAST...

...LOWER MS VALLEY...
MORNING SATELLITE LOOPS SHOW A DEEP UPPER LOW OVER NM.  THIS SYSTEM
WILL MOVE NORTHEASTWARD INTO PARTS OF WESTERN KS AND THE OK
PANHANDLE BY EVENING.  BAND OF 90-110 KNOT MID LEVEL WINDS WILL
PUNCH EASTWARD ACROSS TX...WITH PRIMARY SURFACE COLD FRONT ALSO
SURGING EASTWARD INTO EAST TX BY 21/00Z.  STRONG SOUTHERLY LOW LEVEL
WINDS AHEAD OF FRONT WILL TRANSPORT GULF MOISTURE NORTHWARD INTO
EAST TX AND MUCH OF AR/LA/MS WITH DEWPOINTS RISING INTO THE MID 60S
ACROSS THIS AREA OVERNIGHT.  FORECAST SOUNDINGS SHOW WEAK LAPSE
RATES AND ONLY MARGINAL CAPE VALUES.  NEVERTHELESS...LARGE SCALE
FORCING FOR ASCENT AND AMPLE LOW/MID LEVEL MOISTURE WILL AID IN THE
DEVELOPMENT OF WIDESPREAD SHOWERS AND OCCASIONAL THUNDERSTORMS. 
STRENGTH OF WIND FIELDS SUGGEST A POTENTIAL OF ISOLATED THUNDERSTORM
INTENSIFICATION AND A MARGINAL SEVERE THREAT.  DAMAGING WINDS OR
PERHAPS A TORNADO APPEAR TO BE THE MAIN CONCERNS.

...WESTERN WA...
COLD TEMPERATURES ALOFT ASSOCIATED WITH THE NEXT UPPER TROUGH
APPROACHING THE PACIFIC NORTHWEST COAST WILL LIKELY RESULT IN
ISOLATED LIGHTNING STRIKES LATE TONIGHT OFF THE WA COAST.  PRESENT
INDICATIONS ARE THAT THREAT WILL NOT MOVE INLAND UNTIL THURSDAY.

..HART.. 12/20/2006