[SWODY2] SWODY2

[Severe Weather Outlook - Day 2]

ACUS02 KWNS 291709
SWODY2
SPC AC 291708

DAY 2 CONVECTIVE OUTLOOK  
NWS STORM PREDICTION CENTER NORMAN OK
1108 AM CST THU DEC 29 2005

VALID 301200Z - 311200Z

GEN TSTMS ARE FCST TO THE RIGHT OF A LINE FROM 50 NNW UIL 15 SE HQM
50 SSE OTH 20 ESE CEC 45 S EKA.

GEN TSTMS ARE FCST TO THE RIGHT OF A LINE FROM 35 WNW PIB 25 WSW GLH
55 SSW JBR 35 SSW LOZ 20 WSW TRI GSP 50 SSE AHN 25 SSE SEM 35 WNW
PIB.

...NO SVR TSTM AREAS FORECAST...

...SYNOPSIS...
THE PROGRESSIVE UPPER FLOW REGIME WILL PERSIST INTO FRI ACROSS THE
COUNTRY.  AS THE UPPER SYSTEM CROSSING NEW ENGLAND EXITS INTO THE
CANADIAN MARITIMES...THE NEXT UPSTREAM SHORTWAVE TROUGH CURRENTLY
OVER THE CNTRL/NRN ROCKIES WILL TRANSLATE INTO THE PLAINS EARLY FRI
AND INTO THE OH/TN VLYS BY EARLY SATURDAY.  A THIRD DISTURBANCE WILL
APPROACH THE PAC NW COAST FRI NIGHT.

AT THE SURFACE...THE SURFACE LOW ASSOCIATED WITH THE PLAINS
DISTURBANCE WILL DEVELOP EWD FROM NEB ACROSS THE CORN BELT FRI
AFTN...REACHING THE CNTRL GRTLKS REGION BY 12Z SAT.  THE TRAILING
FRONT WILL SWEEP EWD ACROSS THE PLAINS...THE OH...MS AND TN VLYS FRI
AFTN AND INTO THE DEEP S/SERN STATES BY EARLY SAT.

...LOWER MS VALLEY/GULF COAST INTO TN VALLEY...
RETURN FLOW HAS ALREADY BEGUN ACROSS THE WRN GULF BASIN/SRN PLAINS
AHEAD OF THE CNTRL/NRN ROCKIES MID-LEVEL IMPULSE.  AS THIS IMPULSE
MOVES INTO THE PLAINS...THE LOW-LEVEL MOISTURE ADVECTION WILL
INCREASE TONIGHT AND FRI ACROSS THE ERN PLAINS AND MS VLY.

THIS SYSTEM IS EXPECTED TO TRACK FARTHER N THAN THE PREVIOUS
DISTURBANCE AND THE STRONGEST LARGE SCALE HEIGHT FALLS/ASCENT WILL
MOVE ACROSS THE GRTLKS AND OH/TN VLYS. THE SRN PERIPHERY OF THE
ASCENT WILL LIKELY BRUSH NRN EXTENT OF THE MOISTURE AXIS AND TSTM
PROBABILITIES WILL LIKELY INCREASE FRI NIGHT OVER PORTIONS OF THE TN
VLY.  GIVEN THAT STRONGER ASCENT/STEEP MID-LEVEL LAPSE RATES WILL
LARGELY SPREAD N OF THE REGION...IT APPEARS THAT SEVERE TSTM
PROBABILITIES WILL REMAIN LOW.

...PACIFIC NW COAST...
STEEPENING LAPSE RATES SPREADING INLAND IN THE POST-FRONTAL REGIME
MAY SUPPORT ISOLD TSTMS ACROSS THE COASTAL SECTIONS OF WA/ORE AND
NRN CA VERY LATE FRI NIGHT.

..RACY.. 12/29/2005

...NOTICE...
THE STATION RELATIVE POINTS IN THIS PRODUCT WILL BE
DISCONTINUED ON 14 FEBRUARY 2006 BUT WILL REMAIN AVAILABLE
IN THE FOLLOWING PRODUCTS:

   WMO HEADER:       AWIPS ID:
   WUUS01            PTSDY1
   WUUS02            PTSDY2
   WUUS03            PTSDY3

A SERVICE CHANGE NOTICE ...SCN05-39... PROVIDES DETAILS
ON THE TRANSITION. FOR ADDITIONAL DETAILS SEE THE FOLLOWING
WEB ADDRESS USING LOWER CASE LETTERS:
WWW.NWS.NOAA.GOV/OM/NOTIF.HTM