[SWODY1] SWODY1

[Severe Weather Outlook Day 1]

ACUS01 KWNS 171629
SWODY1
SPC AC 171627

DAY 1 CONVECTIVE OUTLOOK  
NWS STORM PREDICTION CENTER NORMAN OK
1027 AM CST SUN DEC 17 2006

VALID 171630Z - 181200Z

...NO TSTM AREAS FORECAST...

...SYNOPSIS...
LARGE SCALE FLOW REGIME OVER THE CONUS WILL CHANGE LITTLE THIS
PERIOD AS A MID LEVEL TROUGH OVER NV/CA EVOLVES GRADUALLY INTO A
CLOSED LOW WITH LITTLE EWD MOVEMENT.  A SERIES OF NRN STREAM WAVES
WILL MOVE EWD ALONG THE U.S./CANADIAN BORDER...WITH SURFACE
RIDGING/COLD FRONT EXPECTED TO SAG SWD ACROSS THE SRN PLAINS IN
RESPONSE TO MID LEVEL CONFLUENT FLOW OVER THE NRN PLAINS.  LOW-LEVEL
MOISTURE /BOUNDARY LAYER DEWPOINTS IN THE 60S/ HAS SPREAD NWD ACROSS
E TX INTO SE OK AND AR...BUT POOR LAPSE RATES AND RATHER WARM MID
LEVEL TEMPERATURES WILL LIMIT ANY POTENTIAL FOR DEEP CONVECTION
ALONG THE FRONTAL ZONE NEAR I-44.  OTHERWISE...A SRN STREAM WAVE IS
BEGINNING TO MOVE E OF THE FL PENINSULA...AND THE THREAT FOR ANY
ADDITIONAL THUNDERSTORMS SHOULD REMAIN GENERALLY S/SE OF THE SE FL
COAST AND KEYS.

..THOMPSON.. 12/17/2006