2014 1730 UTC Day 2 Convective Outlook,for wednesday

   DAY 2 CONVECTIVE OUTLOOK  
   NWS STORM PREDICTION CENTER NORMAN OK
   1210 PM CDT TUE MAR 11 2014

   VALID 121200Z - 131200Z

   ...THERE IS A SLGT RISK OF SVR TSTMS FOR PORTIONS OF THE MIDDLE
   ATLANTIC...

   ...SYNOPSIS...
   WATER VAPOR LOOPS IMPLY A MID-LEVEL DISTURBANCE CURRENTLY EMERGING
   OVER THE CNTRL PLAINS...AND THIS FEATURE IS FORECAST TO SHIFT EWD
   AND REACH THE MID MS VALLEY BY THE BEGINNING OF D2/WED. AS IT DOES
   SO...IT WILL PHASE WITH A NRN-STREAM SHORTWAVE IMPULSE DIGGING SSEWD
   FROM ONTARIO AND MANITOBA. THE RESULTING PERTURBATION WILL BE A
   POTENT...HIGH-AMPLITUDE SHORTWAVE TROUGH THAT WILL ADVANCE EWD
   ACROSS THE ERN UNITED STATES. HIGH-MAGNITUDE...LARGE-SCALE UPWARD
   MOTION PRECEDING THIS TROUGH WILL BE AUGMENTED BY STRONG UPPER
   DIVERGENCE ATTENDANT TO A COUPLED UPPER JET STRUCTURE AND
   INTENSIFYING LLJ OVER THE MID ATLANTIC AND NORTHEAST. THIS WILL
   SUPPORT THE ENEWD/NEWD DEVELOPMENT AND INTENSIFICATION OF A FRONTAL
   CYCLONE FROM THE UPPER OHIO VALLEY TO THE ATLANTIC WATERS OFF THE
   SRN NEW ENGLAND COAST. A STRONG COLD FRONT TRAILING SSW OF THE
   CYCLONE WILL SWEEP EWD ACROSS THE SERN STATES AND MID
   ATLANTIC...WHILE STRONG POLEWARD MASS FLUXES PRECEDING THE CYCLONE
   ALLOW A WARM SECTOR TO EXTEND INTO PORTIONS OF ERN PA AND NJ.