SPC AC 241245 DAY 1 CONVECTIVE OUTLOOK NWS STORM PREDICTION CENTER NORMAN OK 0745 AM CDT SUN APR 24 2011 VALID 241300Z - 251200Z ...THERE IS A SLGT RISK OF SVR TSTMS THROUGH TONIGHT FROM CENTRAL/N TX AND SE OK ENEWD TO THE MID ATLANTIC... ...SYNOPSIS... NO MAJOR CHANGES TO PREVIOUS OUTLOOK. A QUASI-STATIONARY FRONT WILL REMAIN THROUGH THE PERIOD FROM CENTRAL/N CENTRAL TX NEWD TO THE OH VALLEY. ALOFT...A BELT OF MODERATE SWLY FLOW WILL BE MAINTAINED