SPC AC 110726

   DAY 3 CONVECTIVE OUTLOOK  
   NWS STORM PREDICTION CENTER NORMAN OK
   0226 AM CDT TUE AUG 11 2015

   VALID 131200Z - 141200Z

   ...NO SVR TSTM AREAS FORECAST...

   ...SUMMARY...
   THUNDERSTORMS ARE FORECAST THURSDAY ACROSS PORTIONS OF THE
   ROCKIES...THE UPPER GREAT LAKES REGION...AND PARTS OF THE SOUTHEAST.
   SEVERE WEATHER RISK APPEARS LOW ACROSS THE COUNTRY.

   ...SYNOPSIS...
   SLOW EWD PROGRESSION OF THE LARGE-SCALE UPPER PATTERN IS FORECAST
   DAY 3...PARTICULARLY OVER THE W WHERE THE UPPER LOW WHICH HAS
   LINGERED OFF THE W COAST FOR SEVERAL DAYS IS PROGGED TO BEGIN
   EJECTING NEWD INTO THE PAC NW THIS PERIOD.  MEANWHILE...A LARGE
   RIDGE WILL REMAIN OVER THE ROCKIES/PLAINS STATES WHILE MEAN
   TROUGHING PERSISTS OVER THE ERN STATES.

   THUNDERSTORMS ARE FORECAST ACROSS PORTIONS OF THE SOUTHEAST NEAR A
   LINGERING/REMNANT FRONT...AND ACROSS THE UPPER GREAT LAKES AND
   VICINITY AS WEAK DISTURBANCES CONTINUE SHIFTING SEWD ACROSS THE AREA
   IN NWLY FLOW ALOFT AROUND THE NERN FRINGE OF THE UPPER RIDGE.  A
   WEAK COOL FRONT SHIFTING SWD ACROSS THE GREAT LAKES IN CONJUNCTION
   WITH THE WEAK SHORT-WAVE TROUGHING MAY FOCUS A FEW SHOWERS AND
   STORMS...BUT SEVERE RISK APPEARS LOW IN BOTH AREAS.

   FINALLY...DIURNAL STORMS WILL ONCE AGAIN DEVELOP OVER THE HIGHER
   TERRAIN ACROSS PORTIONS OF THE WRN CONUS.  FAIRLY WEAK LARGE-SCALE
   ASCENT IS PROGGED BENEATH THE UPPER RIDGE WHICH -- COMBINED WITH
   WEAK CAPE -- SUGGESTS LITTLE TO NO SEVERE RISK IN MOST AREAS.  ONE
   EXCEPTION COULD BE ACROSS THE PAC NW VICINITY...WHERE STRONGER
   ASCENT AND STRENGTHENING FLOW ALOFT WILL SPREAD INLAND IN
   CONJUNCTION WITH THE APPROACHING UPPER SYSTEM.  HOWEVER...IT APPEARS
   ATTM THAT WEAK INSTABILITY SHOULD LARGELY LIMIT STORM INTENSITY --
   SUCH THAT INTRODUCTION OF EVEN LOW /5%/ SEVERE PROBABILITY AREA DOES
   NOT APPEAR WARRANTED ATTM.

   ..GOSS.. 08/11/2015

   CLICK TO GET WUUS03 PTSDY3 PRODUCT

   NOTE: THE NEXT DAY 3 OUTLOOK IS SCHEDULED BY 0730Z