[SWODY2] SWODY2

[Severe Weather Outlook - Day 2]

ACUS02 KWNS 201727
SWODY2
SPC AC 201726

DAY 2 CONVECTIVE OUTLOOK  
NWS STORM PREDICTION CENTER NORMAN OK
1126 AM CST TUE DEC 20 2005

VALID 211200Z - 221200Z

GEN TSTMS ARE FCST TO THE RIGHT OF A LINE FROM 55 NNW UIL UIL HQM
AST 35 WNW SLE 35 NNE 4BK 25 E EKA RBL 55 SE RBL FAT 30 W BFL 20 S
VBG.

...NO SVR TSTM AREAS FORECAST...

...SYNOPSIS...
IN MID/UPPER LEVELS...GENERAL DEAMPLIFICATION OF NRN STREAM PATTERN
IS FCST THROUGH PERIOD AS WRN CONUS RIDGE FLATTENS...AND HEIGHTS
RISE ACROSS MUCH OF MIDDLE-LOWER GREAT LAKES REGIONS.  SHORTWAVE
TROUGH - NOW EVIDENT IN MOISTURE CHANNEL IMAGERY OVER OK AND N TX --
IS FCST TO MOVE EWD ACROSS SERN CONUS AND OFFSHORE GA/CAROLINAS
EARLY IN PERIOD.  MEANWHILE UPSTREAM PERTURBATION -- NOW ASSOCIATED
WITH SPEED MAX ALOFT ANALYZED OVER NRN ROCKIES -- IS EXPECTED TO DIG
SEWD ACROSS SRN PLAINS AND NERN GULF...REACHING FL PENINSULA BY
22/12Z.  NET EFFECT OF THESE TWO TROUGHS...AND ASSOCIATED SFC
REINFORCEMENT OF CONTINENTAL-POLAR AIR MASS OVER GULF COAST STATES
-- WILL BE TO SUPPRESS CONVECTIVE POTENTIAL OVER GREAT MAJORITY OF
CONUS. EXCEPTION WILL BE OVER SOME PORTIONS PACIFIC COAST STATES.

...PACIFIC COAST STATES...
PRIMARY CYCLONE TRACK ACROSS NERN PACIFIC WILL CONTINUE INTO ERN
GULF OF AK AND ADJACENT PORTIONS AK/BC.  HOWEVER...AS WRN CONUS
RIDGE WEAKENS...MID/UPPER LEVEL FLOW WILL VEER TO MORE WLY COMPONENT
ACROSS REGION AND SEVERAL MINOR SHORTWAVE PERTURBATIONS WILL RESULT
IN SUBTLE BUT SUSTAINED MIDLEVEL COOLING/DESTABILIZATION OVER AREA. 
WITH WEAK CINH EXPECTED...ASSOCIATED STEEPENING OF LOW-MIDLEVEL
LAPSE RATES MAY RESULT IN WEAK MUCAPES UNDER 300 J/KG AND EPISODIC
THUNDER POTENTIAL...ESPECIALLY OVER CENTRAL CA REGION WHERE LOW
LEVEL WAA REGIME WILL REMAIN STRONG.  COVERAGE SHOULD BE MARGINAL
FOR GEN THUNDER OUTLOOK.

..EDWARDS.. 12/20/2005

...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