DAY 1 CONVECTIVE OUTLOOK CORR 2NWS STORM PREDICTION CENTER NORMAN OK 0120 AM CDT SUN APR 27 2014 VALID 271200Z - 281200Z ...THERE IS A MDT RISK OF SVR TSTMS FROM EXTREME ERN KS...ERN OK...MUCH OF MO...AR...EXTREME NERN TX...WRN TN AND NWRN MS... ...THERE IS A SLGT RISK OF SVR TSTMS OVER ERN PORTIONS OF THE CNTRL AND SRN PLAINS THROUGH MUCH OF THE LOWER-MID MS VALLEY AND WRN TN VALLEY... CORRECTED FOR TEXT IN LAST PARAGRAPH...CATEGORICAL OUTLOOK GRAPHIC ...SUMMARY... NUMEROUS SEVERE STORMS WITH POTENTIAL FOR STRONG TORNADOES...VERY LARGE HAIL AND DAMAGING WIND ARE LIKELY ACROSS MUCH OF THE MISSISSIPPI RIVER VALLEY...WITH THE GREATEST THREAT FROM THE ARK-LA-TEX INTO ARKANSAS...WESTERN TENNESSEE AND WESTERN AND CENTRAL MISSOURI AND ERN KS. A SECONDARY THREAT AREA WILL BE FROM EASTERN NEBRASKA INTO IOWA...AND STORMS DEVELOPING IN THIS REGION DURING THE DAY WILL ALSO LIKELY PRODUCE LARGE HAIL AND SEVERAL TORNADOES. ...SYNOPSIS... VIGOROUS SHORTWAVE TROUGH WILL BE LOCATED ACROSS ERN WRN KS BY 12Z SUNDAY AND LIFT NEWD INTO NEB BY LATE SUNDAY AFTERNOON AND EVENING. A SECONDARY IMPULSE/JET MAX WILL ADVANCE THROUGH THE BASE OF THE UPPER TROUGH AND THROUGH THE SRN PLAINS...REACHING THE LOWER MS VALLEY REGION SUNDAY EVENING. AT THE SFC AN AREA OF LOW PRESSURE WILL DEEPEN AND LIFT NWD INTO NEB IN ASSOCIATION WITH THE PRIMARY SHORTWAVE TROUGH...WHILE A PACIFIC FRONT/DRYLINE SURGES EWD THROUGH THE CNTRL AND SRN PLAINS...REACHING THE MID MS VALLEY REGION BY EVENING. A WARM FRONT WILL EXTEND EWD FROM THE LOW AND LIFT NWD THROUGH NEB AND IA.
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