SPC AC 091234
   
   DAY 1 CONVECTIVE OUTLOOK  
   NWS STORM PREDICTION CENTER NORMAN OK
   0634 AM CST TUE FEB 09 2010
   
   VALID 091300Z - 101200Z
   
   ...NO SVR TSTM AREAS FORECAST...
   
   ...SYNOPSIS...
   PHASING OF WEAKENING SRN STREAM SYSTEM AND ASSOCIATED INTENSE SRN
   STREAM MID/UPPER LEVEL JET...WITH DOMINANT NRN STREAM SYSTEM OVER
   THE LOWER MO RIVER VALLEY...WILL OCCUR OVER THE MID
   WEST/APPALACHIANS TODAY.  THIS WILL SUPPORT POTENT SYSTEM AND
   ATTENDANT NEGATIVELY-TILTED MID LEVEL TROUGH ACROSS THE UPPER OH
   VALLEY INTO THE SOUTHEAST BY TONIGHT...WITH DEEPENING/ CONSOLIDATING
   SURFACE CYCLONE OCCURRING JUST OFF THE MID ATLANTIC COAST BY
   MORNING.  MEANWHILE...THE NEXT SIGNIFICANT VORTICITY
   MAXIMUM/MIDLEVEL CIRCULATION WILL DIG SEWD ALONG THE CA COAST.
   
   ...N-CNTRL AND NERN GULF COAST...INCLUDING FL...
   WEAK LAPSE RATES AND ASSOCIATED INSTABILITY WILL PREVAIL AHEAD OF
   SRN STREAM SYSTEM AND ATTENDANT SURFACE COLD FRONT MOVING ACROSS FL
   TODAY.  HOWEVER...DEEP ASCENT SHOULD ALLOW AT LEAST ISOLATED
   THUNDERSTORMS TO ACCOMPANY THE COLD FRONT OVER FL...WITH MORE
   WIDESPREAD THUNDERSTORMS DEVELOPING OVER THE GULF STREAM OFF THE
   COASTAL CAROLINAS. ALTHOUGH MAJORITY OF THUNDERSTORMS WILL REMAIN
   OFFSHORE...A SPORADIC LIGHTNING STRIKE OR TWO MAY ALSO OCCUR NEAR
   THE NC COAST.
   
   ...CA INTO LOWER CO VALLEY...
   MODELS ARE CONSISTENT IN BRINGING INCREASED ASCENT AND MARGINAL
   INSTABILITY ALONG THE CENTRAL/SRN CA COAST TODAY...AND INTO THE
   LOWER CO RIVER VALLEY TONIGHT AHEAD OF INTENSE SYSTEM DIGGING SWD
   ALONG THE CO COAST.  THIS SHOULD SUPPORT A FEW THUNDERSTORMS OVER
   THE REGION...ALTHOUGH SEVERE THREAT WILL REMAIN LIMITED.
   
   ..EVANS.. 02/09/2010
   
   CLICK TO GET WUUS01 PTSDY1 PRODUCT

   NOTE: THE NEXT DAY 1 OUTLOOK IS SCHEDULED BY 1630Z