Categorical Graphic
Probabilistic Tornado Graphic
Probability of a tornado within 25 miles of a point. Hatched Area: 10% or greater probability of EF2 - EF5 tornadoes within 25 miles of a point.
Probabilistic Damaging Wind Graphic
Probability of damaging thunderstorm winds or wind gusts of 50 knots or higher within 25 miles of a point. Hatched Area: 10% of greater probability of wind gusts 65 knots or greater within 25 miles of a point.
Probabilistic Large Hail Graphic
Probability of hail 1" or larger within 25 miles of a point. Hatched Area: 10% or greater probability of hail 2" or larger within 25 miles of a point.

   SPC AC 080031
   
   DAY 1 CONVECTIVE OUTLOOK  
   NWS STORM PREDICTION CENTER NORMAN OK
   0731 PM CDT SAT MAY 07 2011
   
   VALID 080100Z - 081200Z
   
   ...THERE IS A SLGT RISK OF SVR TSTMS ACROSS PARTS OF THE LOWER OH
   VALLEY...
   
   ...OH VALLEY...
   
   SMALL CLUSTER OF SUPERCELLS IS PROPAGATING SWD ALONG THE IL/IND
   BORDER ALONG ERN FRINGE OF STEEPER LAPSE RATES WHERE BUOYANCY IS
   SUFFICIENT FOR MAINTAINING SFC-BASED CONVECTION.  THIS ACTIVITY WILL
   ENCOUNTER AN INCREASINGLY HOSTILE ENVIRONMENT OVER THE NEXT SEVERAL
   HOURS AS BOUNDARY LAYER COOLING FORCES TSTMS TO BECOME MORE ELEVATED
   AND/OR WEAKEN.  UNTIL THIS OCCURS IT APPEARS A NARROW WEDGE OF
   INSTABILITY WILL CONTINUE TO SUPPORT SUPERCELL STRUCTURES WITH HAIL
   AT TIMES EXCEEDING SEVERE LEVELS POSSIBLE.  ADDITIONALLY...STRONGEST
   ROTATING TSTM CELLS MAY PRODUCE ISOLATED TORNADOES FOR THE NEXT FEW
   HOURS.
   
   ..DARROW.. 05/08/2011
   
   CLICK TO GET WUUS01 PTSDY1 PRODUCT

   NOTE: THE NEXT DAY 1 OUTLOOK IS SCHEDULED BY 0600Z