[SWODY2] SWODY2

[Severe Weather Outlook - Day 2]

ACUS02 KWNS 301727
SWODY2
SPC AC 301726

DAY 2 CONVECTIVE OUTLOOK  
NWS STORM PREDICTION CENTER NORMAN OK
1126 AM CST FRI DEC 30 2005

VALID 311200Z - 011200Z

GEN TSTMS ARE FCST TO THE RIGHT OF A LINE FROM 40 NNE BLI 25 ESE PDX
MFR 10 S MHS 50 NNW RNO 20 SW WMC 45 NNW ENV 15 SE OGD 30 NW PUC 15
WNW 4HV 25 SSE BCE SGU 35 NNW NID 40 WNW BFL 20 WNW PRB 60 W MRY.

...NO SVR TSTM AREAS FORECAST...

...SYNOPSIS...
PROGRESSIVE UPPER FLOW REGIME WILL CONTINUE INTO THE WEEKEND. 
MID-LEVEL SHORTWAVE TROUGH NOW MOVING ACROSS THE PLAINS WILL QUICKLY
MOVE NEWD INTO NEW ENGLAND TONIGHT AND SATURDAY.  MEANWHILE...A
STRONGER IMPULSE IS EXPECTED TO MOVE ONSHORE CA/PAC NW EARLY
SATURDAY THEN INTO THE INTERMOUNTAIN WEST/GRT BASIN BY 12Z SUNDAY.  


...CNTRL VLYS OF CA...
FRONTAL BAND ASSOCIATED WITH THE STRONG UPPER WAVE IS EXPECTED TO
REACH NRN CA AND THE BAY AREA MID-MORNING SATURDAY...THEN SWEEP SEWD
ACROSS CNTRL CA BY EVENING.  BEHIND THE FRONT...ONSHORE WLY FLOW
WILL ADVECT MID 50S DEW POINTS INTO THE VLYS BENEATH STEEPENING
MID-TROPOSPHERIC LAPSE RATES...CONTRIBUTING TO A DESTABILIZING AIR
MASS DURING THE AFTN/EVENING /MLCAPES 250-500 J PER KG/.  MAGNITUDE
OF THE BUOYANCY COUPLED WITH THE MAINTENANCE OF CYCLONIC FLOW ALOFT
WILL BE FAVORABLE FOR SCATTERED TSTMS...PRIMARILY DURING PEAK
HEATING.  MORE ROBUST UPDRAFTS MAY TEND TO EXHIBIT BRIEF SUPERCELL
STRUCTURES GIVEN 60-80 KTS OF VERTICAL SHEAR AND ISOLD LARGE HAIL
WILL BE POSSIBLE.  ISOLD TORNADOES MAY ALSO OCCUR AS THE
NEAR-SURFACE FLOW SHOULD REMAIN BACKED IN THE VLYS...AUGMENTING
LOW-LEVEL SHEAR.  LATER OUTLOOKS WILL NEED TO CONSIDER A CATEGORICAL
SLGT RISK IF PROJECTED THERMODYNAMIC PROFILES APPEAR/BECOME
FAVORABLE FOR MORE NUMEROUS TSTMS.

..RACY.. 12/30/2005

...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