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 310054
   
   DAY 1 CONVECTIVE OUTLOOK  
   NWS STORM PREDICTION CENTER NORMAN OK
   0754 PM CDT TUE AUG 30 2011
   
   VALID 310100Z - 311200Z
   
   ...NO SVR TSTM AREAS FORECAST...
   
   THE LATEST WATER VAPOR IMAGERY SHOWS A SHORTWAVE TROUGH OVER THE
   UPPER MS VALLEY WITH AN UPPER-LEVEL RIDGE IN THE CNTRL HIGH PLAINS.
   TO THE WEST OF THE RIDGE AXIS...A NARROW CORRIDOR OF INSTABILITY IS
   ANALYZED FROM NRN WY NWWD INTO CNTRL MT. ON THE WEST EDGE OF THE
   INSTABILITY AXIS...ISOLATED THUNDERSTORMS ARE FORECAST TO CONTINUE
   INITIATING ACROSS SOUTHWEST MT AND MOVE EWD INTO CNTRL MT THIS
   EVENING. TWO FACTORS THAT SHOULD LIMIT THE SEVERE THREAT WITH THIS
   ACTIVITY ARE THE DRY AIRMASS IN PLACE /SFC DEWPOINTS IN THE LOWER
   40S F/ AND SUBSIDENCE ASSOCIATED WITH THE UPPER-LEVEL RIDGE. FOR
   THESE REASONS...HAVE REMOVED THE 5 PERCENT WIND DAMAGE PROBABILITY
   FROM SRN MT.
   
   ELSEWHERE ACROSS THE CONUS...A SEVERE THREAT IS NOT EXPECTED THIS
   EVENING OR TONIGHT.
   
   ..BROYLES.. 08/31/2011
   
   CLICK TO GET WUUS01 PTSDY1 PRODUCT

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