SPC AC 101727

   DAY 2 CONVECTIVE OUTLOOK  
   NWS STORM PREDICTION CENTER NORMAN OK
   1127 AM CST WED DEC 10 2014

   VALID 111200Z - 121200Z

   ...NO SVR TSTM AREAS FORECAST...

   ...SUMMARY...
   ISOLATED THUNDERSTORMS MAY DEVELOP ALONG PARTS OF THE PACIFIC COAST
   AND PERHAPS ACROSS PORTIONS OF SOUTH TEXAS.

   ...SYNOPSIS...
   NO CHANGES ARE NEEDED WITH THE DAY 2 OUTLOOK UPDATE...AS ISOLATED
   TSTMS WILL BE POSSIBLE ACROSS PREDOMINATELY COASTAL SECTIONS OF
   ORE...AND IN VICINITY OF A FRONTAL PASSAGE AND COASTAL AREAS OF NRN
   AND CENTRAL CA.

   A STRONG PACIFIC STORM WILL BE THE PRIMARY SYSTEM AFFECTING THE
   LOWER 48 STATES ON DAY 2 THAT WILL PROVIDE SOME CONVECTIVE/LIGHTNING
   POTENTIAL.

   ...PACIFIC COAST...
   A DEEP ERN PACIFIC LONG WAVE TROUGH WILL MOVE INTO THE WRN STATES
   DURING DAY 2.  A LEAD STRONG SHORTWAVE TROUGH AND ATTENDANT SURFACE
   LOW ARE FORECAST TO TRACK FROM OFF THE NRN CA COAST AT 12Z THURSDAY
   NNEWD NEAR THE ORE/WA COAST AND MOVE INTO NWRN WA BY 12Z FRIDAY.  A
   SECOND SHORTWAVE TROUGH WILL MOVE INTO CENTRAL AND SRN CA LATE IN
   THE PERIOD...WHILE A PACIFIC FRONT ADVANCES SSEWD ACROSS NRN AND
   CENTRAL CA.  RELATIVELY WEAK INSTABILITY WILL SUPPORT SOME LIGHTNING
   POTENTIAL WITH LOW-TOPPED CONVECTION.  DESPITE THIS POTENTIAL...
   STRONG GRADIENT WINDS WILL POSE THE GREATEST WIND THREAT ACROSS WRN
   ORE/WA AND CA ON THURSDAY.  THIS PRECLUDES THE NEED TO INCLUDE A 5
   PERCENT SEVERE WEATHER THREAT.

   ...SOUTH TX...
   THERE REMAINS A LOW PROBABILITY FOR A FEW TSTMS ACROSS THIS
   REGION...AND POTENTIALLY INTO PORTIONS OF CENTRAL AND SOUTH CENTRAL
   TX...AS A WEAK NRN MEXICO SHORTWAVE TROUGH IS EXPECTED TO DEAMPLIFY
   AS IT SHIFTS EWD THURSDAY.

   ..PETERS.. 12/10/2014

   CLICK TO GET WUUS02 PTSDY2 PRODUCT

   NOTE: THE NEXT DAY 2 OUTLOOK IS SCHEDULED BY 0700Z