[SWODY1] SWODY1

[SWODY1 at goshenarc.org]

ACUS01 KWNS 290054
SWODY1
SPC AC 290053

DAY 1 CONVECTIVE OUTLOOK  
NWS STORM PREDICTION CENTER NORMAN OK
0653 PM CST TUE DEC 28 2004

VALID 290100Z - 291200Z

GEN TSTMS ARE FCST TO THE RIGHT OF A LINE FROM 25 W UKI 40 E UKI 40
WSW TVL 60 NNW NID LAS 45 ENE IGM 45 SW INW 55 ESE PHX 80 S GBN.

...NO SVR TSTM AREAS FORECAST...

...SRN CA...
WATER VAPOR IMAGERY SHOWED TWO SHORT WAVE TROUGHS LOCATED IN THE
BASE OF A PARENT CLOSED LOW WHICH HAS BEGUN TO MOVE EWD TOWARD CA. 
THIS PARENT LOW WILL DE-AMPLIFY INTO AN OPEN WAVE AS IT MOVES INLAND
TONIGHT AS AN UPSTREAM TROUGH DIGS SSEWD OFF THE PAC NW.  THE LEAD
SHORT WAVE TROUGH /AT 32.7N/123.8W/ IS EXPECTED TO MOVE ACROSS THE
CENTRAL CA COAST AROUND 06Z...WITH THE SECOND/STRONGER TROUGH /AT
30.7N/128.6W/ REACHING THE SRN CA COAST BY 12Z WEDNESDAY.  OCEANIC
LIGHTNING DATA SHOWED A FEW STRIKES WITH THE LEAD TROUGH AND SEVERAL
STRIKES WITH THE SECOND ONE.  

LARGE SCALE ASCENT AND VERTICAL SHEAR WILL INCREASE AS THE SECOND
SHORT WAVE TROUGH APPROACHES THE SRN CA COAST LATER TONIGHT.  WEAK
INSTABILITY INLAND IS EXPECTED TO LIMIT THE THREAT OF SEVERE STORMS
AS THUNDERSTORMS INCREASE BY 06-09Z ALONG COASTAL AREAS OF SRN CA. 
HOWEVER...SUFFICIENT CONVECTIVE CLOUD LAYER SHEAR AND BACKED
LOW-LEVEL WINDS NEAR THE COAST MAY SUPPORT MINI-SUPERCELLS JUST
OFFSHORE WITH AN ATTENDANT THREAT FOR HAIL...GUSTY WINDS AND PERHAPS
A WATERSPOUT/BRIEF TORNADO.  SOME OF THIS SEVERE ACTIVITY MAY MOVE
INLAND ALONG THE COASTAL AREAS...BUT THREAT IS EXPECTED TO BE TOO
LOW FOR A CATEGORICAL OUTLOOK.

..PETERS.. 12/29/2004

...NOTICE...
FOR USERS DECODING THE POINTS PARAGRAPH HEREIN...LATITUDE AND
LONGITUDE POINTS FOR THE CATEGORICAL AND PROBABILISTIC OUTLOOK
GRAPHICS ALSO ARE LOCATED IN A SEPARATE PRODUCT UNDER THE WMO
HEADINGS WUUS01 PTSDY1...WUUS02 PTSDY2...AND WUUS03 PTSDY3.  THE
INCLUSION OF POINTS IN THIS PRODUCT WILL EVENTUALLY BE DISCONTINUED.