[SWODY1] SWODY1

[Severe Weather Outlook Day 1]

ACUS01 KWNS 050042
SWODY1
SPC AC 050040

DAY 1 CONVECTIVE OUTLOOK  
NWS STORM PREDICTION CENTER NORMAN OK
0640 PM CST THU JAN 04 2007

VALID 050100Z - 051200Z

...THERE IS A SLGT RISK OF SVR TSTMS OVER THE CNTRL GULF COASTAL
AREA...

...CNTRL GULF COASTAL AREA...

PROGRESSIVE UPPER LOW OVER ERN TX WILL EJECT ENEWD INTO THE LOWER MS
VALLEY TONIGHT. A 40 TO 50 KT SLY LOW LEVEL JET WILL PERSIST WITHIN
THE ZONE OF UPPER DIVERGENCE AND ASCENT JUST DOWNSTREAM FROM THE
SHORTWAVE TROUGH AND SHIFT EWD THROUGH THE SERN STATES. A WARM FRONT
EXTENDS FROM A SURFACE LOW OVER LA EWD THROUGH SRN MS...SRN AL AND
INTO SRN GA. A COLD FRONT EXTENDS SWD FROM THE LOW THROUGH SERN LA
INTO THE NWRN GULF. BOUNDARY LAYER DEWPOINTS IN THE MID TO UPPER 60S
HAVE SPREAD INLAND NEAR AND S OF THE WARM FRONT. THE SLY LOW LEVEL
JET MAY SUPPORT A NWD ADVANCE OF THE WARM FRONT OVERNIGHT...ALLOWING
THE MOIST AND MARGINALLY UNSTABLE WARM SECTOR TO SPREAD FARTHER
INLAND. BAND OF THUNDERSTORMS WILL PERSIST WITHIN ZONE OF DEEP LAYER
ASCENT ALONG AND JUST AHEAD OF THE COLD FRONT AND SHIFT EWD
OVERNIGHT. STORMS NEAR AND S OF THE WARM FRONT WILL REMAIN CLOSE
ENOUGH TO SURFACE BASED TO MAINTAIN A SEVERE THREAT. LARGE LOW LEVEL
HODOGRAPHS AND FAVORABLE DEEP LAYER SHEAR WILL SUPPORT ORGANIZED
STORMS INCLUDING BOW ECHOES AND SUPERCELLS. ISOLATED TORNADOES AND
DAMAGING WIND WILL REMAIN THE PRIMARY THREATS.

..DIAL.. 01/05/2007