Categorical Graphic
Probabilistic Graphic
Probability of severe weather within 25 miles of a point. Hatched Area: 10% or greater probability of significant severe within 25 miles of a point.

   SPC AC 211716
   
   DAY 2 CONVECTIVE OUTLOOK  
   NWS STORM PREDICTION CENTER NORMAN OK
   1216 PM CDT WED SEP 21 2011
   
   VALID 221200Z - 231200Z
   
   ...NO SVR TSTM AREAS FORECAST...
   
   AN UPPER-LEVEL LOW OVER THE UPPER GREAT LAKES WILL GRADUALLY FILL ON
   THURSDAY AS AN ASSOCIATED UPPER-LEVEL TROUGH MOVES SEWD ACROSS THE
   MID-MO VALLEY AND SRN PLAINS. AT THE SFC...A COLD FRONT WILL ADVANCE
   SWD ACROSS THE SRN PLAINS...LOWER MS VALLEY AND TN VALLEY EXTENDING
   NEWD INTO THE APPALACHIAN MTNS BY MIDDAY ON THURSDAY. SCATTERED
   THUNDERSTORMS SHOULD INITIATE ALONG AND AHEAD OF THE BOUNDARY
   THURSDAY AFTERNOON AS SFC HEATING TAKES PLACE AND LOW-LEVEL
   CONVERGENCE INCREASES. FORECAST SOUNDINGS ALONG AND TO THE SOUTHEAST
   OF THE FRONT SUGGEST A FEW POCKETS OF MODERATE INSTABILITY COULD
   DEVELOP ACROSS THE GULF COAST STATES AND ATLANTIC SEABOARD. WHERE
   INSTABILITY BECOMES LOCALLY MAXIMIZED...A FEW STRONG UPDRAFTS WILL
   BE POSSIBLE. HOWEVER...DEEP LAYER SHEAR SHOULD GENERALLY REMAIN
   BELOW 30 KT ALONG MOST OF THE FRONT WITH LARGE-SCALE ASCENT ALSO
   WEAK SUGGESTING THE THREAT FOR STRONG STORMS SHOULD BE VERY
   ISOLATED. DUE TO THIS REASONING...HAVE NOT ADDED A LOW-END SEVERE
   PROBABILITY FOR THIS OUTLOOK.
   
   ..BROYLES.. 09/21/2011
   
   CLICK TO GET WUUS02 PTSDY2 PRODUCT

   NOTE: THE NEXT DAY 2 OUTLOOK IS SCHEDULED BY 0600Z