[SWODY1] SWODY1

[Severe Weather Outlook Day 1]

ACUS01 KWNS 190037
SWODY1
SPC AC 190036

DAY 1 CONVECTIVE OUTLOOK  
NWS STORM PREDICTION CENTER NORMAN OK
0636 PM CST SUN DEC 18 2005

VALID 190100Z - 191200Z

GEN TSTMS ARE FCST TO THE RIGHT OF A LINE FROM 50 NW 4BK 25 WNW MFR
20 WSW LMT 55 SSW AAT 40 NW TVL 45 NNE FAT 30 SSE FAT 35 SW VBG.

...NO SVR TSTM AREAS FORECAST...

...SWRN ORE/CA...

STRONG SHORTWAVE TROUGH MOVING ONTO THE NRN CA/SRN ORE COAST IS
FORECAST TO WEAKEN SIGNIFICANTLY OVERNIGHT AS IT CONTINUES EWD INTO
INTERMOUNTAIN W.  LARGE-SCALE FORCING AND STEEPENING MID-LEVEL LAPSE
RATES ASSOCIATED WITH THIS FEATURE HAVE CONTRIBUTED TO A WEAKLY
UNSTABLE ENVIRONMENT /REF. 00Z OAK SOUNDING/...AND SUPPORTED TSTM
DEVELOPMENT INLAND TO THE NRN SIERRAS. AMBIENT LOW/MID-LEVEL SHEAR
REMAINS RELATIVELY STRONG FROM SAN FRANCISCO BAY INTO THE CNTRL
VALLEY...HOWEVER IT APPEARS THAT THE ISOLATED SEVERE WEATHER
POTENTIAL MAY BE DIMINISHING OWING TO THE WEAKENING LARGE SCALE
FORCING ACROSS THE SAME AREA.

LIGHTNING ACTIVITY HAS DECREASED NOTABLY OVER THE PAST 1 TO 2
HOURS...AND THIS TREND SHOULD CONTINUE THROUGH THE EVENING AS
SHORTWAVE TROUGH WEAKENS AND MOVES E OF REGION.

..MEAD.. 12/19/2005

...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