SPC AC 301551
   
   DAY 1 CONVECTIVE OUTLOOK  
   NWS STORM PREDICTION CENTER NORMAN OK
   0951 AM CST THU DEC 30 2004
   
   VALID 301630Z - 311200Z
   
   GEN TSTMS ARE FCST TO THE RIGHT OF A LINE FROM 10 NNW AST SLE 10 NNE
   LMT 50 NW TVL 30 N MER 20 SW PRB.
   
   GEN TSTMS ARE FCST TO THE RIGHT OF A LINE FROM 20 SSE DTW 35 S AZO
   25 WSW CGX MSN 20 SSE CWA IMT 35 E PLN.
   
   ...NO SVR TSTM AREAS FORECAST...
   
   COLD UPPER TROUGH OFF W COAST SLOWLY MOVING EWD AS S/W IMPULSES MOVE
   RAPIDLY EWD OUT OF TROUGH ACROSS WRN U.S.  ONSHORE FLOW OF MOIST AND
   MARGINALLY UNSTABLE AIR WILL BE SUFFICIENT TO CONTINUE THREAT OF
   THUNDERSTORMS PRIMARILY FROM COASTAL MTS WWD CENTRAL CA TO WRN OR. 
   SHEAR PROFILES WILL REMAIN FAVORABLE FOR STRONGER STORM DEVELOPMENT
   SACRAMENTO VALLEY...HOWEVER WITH THE WEAK INSTABILITY NO SEVERE IS
   STILL THE FORECAST.
   
   STRONG TROUGH CURRENTLY MOVING RAPIDLY EWD ACROSS NRN PLAINS WILL BE
   ACCOMPANIED BY A VIGOROUS SURFACE LOW. THE LOW CURRENTLY IN THE WRN
   DAKOTAS WILL TRACK EWD TO ACROSS NRN MN TONIGHT.  S OF LOW STRONG
   WARM ADVECTION COUPLED WITH RETURN OF GULF MOISTURE SHOULD BE
   SUFFICIENT FOR DEVELOPMENT OF EMBEDDED THUNDERSTORMS BY THIS EVENING
   WRN GREAT LAKES.  WITH VERY LITTLE IN THE WAY OF INSTABILITY
   AVAILABLE NO SEVERE THUNDERSTORMS EXPECTED.
   
   ..HALES.. 12/30/2004
   
   ...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.
   
   NOTE: THE NEXT DAY 1 OUTLOOK IS SCHEDULED BY 2000Z