STORM PREDICTION CENTER...NWS/NCEP...NORMAN OK
   DAY 3 CONVECTIVE OUTLOOK...REF AWIPS GRAPHIC PGWK48 KWNS.
    
   VALID 031200-041200
    
   THERE IS RISK OF SEVERE STORMS OVER PARTS OF THE SRN/CNTRL PLNS
   NEWD ACROSS MID MS VLY TO THE LWR GRT LKS.
   
   ...SYNOPSIS...
   COMPLEX TROUGH WHICH WILL CROSS THE GRT BASIN AND ROCKIES ON
   WEDNESDAY WILL CONTINUE ENE AND WEAKEN ACROSS THE NRN HALF OF THE
   PLNS AND UPR MS VLY ON THURSDAY AS STRONG UPSTREAM SYSTEM DROPS SE
   TOWARD THE NRN CA COAST.  
   
   AT LOWER LEVELS...LEE CYCLONE EXPECTED TO BE PRESENT AT START OF
   PERIOD OVER NEBRASKA SHOULD TRACK E ALONG STALLED FRONT EXTENDING
   E TO THE MID ATLANTIC COAST.  THE FRONT SHOULD SURGE S IN WAKE OF
   THE LOW...REACHING THE OK/TX PANHANDLE REGION BY 12Z FRIDAY.    
   
   ...MID MS VLY TO LWR GRT LKS...
   SURFACE RIDGE NOW ELONGATED W/E ACROSS THE NRN GULF OF MEXICO
   SHOULD WEAKEN ON THURSDAY.  THIS WILL ALLOW BOUNDARY LAYER MOISTURE
   TO FINALLY BEGIN SPREADING NEWD THROUGH THE LOWER MS VLY.  AS LEAD
   PORTION OF UPPER TROUGH...AND ASSOCIATED 850 MB CONFLUENCE ZONE...
   ENCOUNTER THIS MOISTURE AXIS...SUFFICIENT UPLIFT MAY DEVELOP TO
   OVERCOME EXISTING CAP...LEADING TO THUNDERSTORM DEVELOPMENT OVER
   PARTS OF THE MID MS/LWR OH VLYS LATER THURSDAY.  OTHER STORMS MAY
   DEVELOP ALONG OR JUST N OF STALLED FRONT EXTENDING E TO THE LWR GRT
   LKS.  ANY STORMS THAT DO FORM WILL LIKELY BECOME SUPERCELLS GIVEN
   STRENGTH OF UNIDIRECTIONAL DEEP SHEAR /AOA 50 KTS/.  WITH MOISTURE
   AVAILABILITY STILL LIKELY TO BE SOMEWHAT LIMITED...ACTIVITY SHOULD
   REMAIN FAIRLY ISOLATED EXCEPT ALONG FRONT.  THE PRIMARY SEVERE
   THREATS SHOULD BE HAIL AND/OR DAMAGING WIND.         
   
   ...CNTRL/SRN PLNS...
   A SEPARATE AREA OF THUNDERSTORMS MAY DEVELOP LATE IN THE PERIOD
   /AFTER 06Z FRIDAY/ OVER PARTS OF KS/MO/NRN OK.  THIS ACTIVITY WILL
   LIKELY BE ELEVATED AND DEVELOP IN ZONE OF 850-700 MB WARM ADVECTION
   DOWNSTREAM FROM SECONDARY PORTION OF EJECTING UPPER TROUGH.  AMPLE
   CLOUD LAYER SHEAR /ON THE ORDER OF 50 KTS/ WILL BE PRESENT FOR
   SUPERCELLS.  SUFFICIENT ELEVATED INSTABILITY MAY DEVELOP FOR LARGE
   HAIL GIVEN SOMEWHAT GREATER DEGREE OF MOISTURE INFLOW EXPECTED IN
   THIS REGION RELATIVE TO POINTS FARTHER N AND E.  
   
   ..CORFIDI.. 04/01/03
    
   NOTE: THE NEXT DAY 3 OUTLOOK IS SCHEDULED FOR 1200Z