WOUS40 KWNS 222035 PWOSPC ALZ000-ARZ000-ILZ000-INZ000-KYZ000-MOZ000-MSZ000-TNZ000-230200- PUBLIC SEVERE WEATHER OUTLOOK NWS STORM PREDICTION CENTER NORMAN OK 0235 PM CST SUN JAN 22 2012 ...WIDESPREAD SEVERE THUNDERSTORMS EXPECTED OVER PARTS OF THE LOWER MISSISSIPPI...LOWER OHIO...AND TENNESSEE VALLEYS LATE THIS AFTERNOON THROUGH EARLY MONDAY... THE NWS STORM PREDICTION CENTER IN NORMAN OK IS FORECASTING THE DEVELOPMENT OF TORNADOES...WIDESPREAD DAMAGING WINDS...AND HAIL OVER PARTS OF THE LOWER MISSISSIPPI...LOWER OHIO...AND TENNESSEE VALLEYS LATE THIS AFTERNOON THROUGH EARLY MONDAY. THE AREAS MOST LIKELY TO EXPERIENCE THIS ACTIVITY INCLUDE NORTHWEST ALABAMA EASTERN ARKANSAS SOUTHERN ILLINOIS SOUTHERN INDIANA WESTERN AND CENTRAL KENTUCKY SOUTHEASTERN MISSOURI NORTHERN AND CENTRAL MISSISSIPPI WESTERN AND MIDDLE TENNESSEE SURROUNDING THE GREATEST RISK AREA...SEVERE STORMS ARE ALSO POSSIBLE FROM THE CENTRAL GULF COAST NORTH AND NORTHEAST INTO PARTS OF MICHIGAN...OHIO...AND THE WESTERN SLOPES OF THE SOUTHERN AND CENTRAL APPALACHIANS. A POWERFUL JET STREAM DISTURBANCE OVER THE SOUTHERN PLAINS THIS AFTERNOON WILL CONTINUE TO MOVE RAPIDLY EAST-NORTHEASTWARD TO THE MISSISSIPPI AND OHIO VALLEYS TONIGHT AND EARLY MONDAY. IN ASSOCIATION WITH THE JET STREAM IMPULSE...A STRONG SURFACE LOW WILL TRACK EAST ACROSS EASTERN KANSAS THIS AFTERNOON...AND THEN NORTHEAST ACROSS MISSOURI AND IOWA TONIGHT...BEFORE REACHING WISCONSIN EARLY MONDAY. AHEAD OF THE LOW...A BROAD CURRENT OF FAST SOUTHERLY WINDS WILL USHER UNSEASONABLY WARM AND MOIST AIR NORTHWARD ACROSS THE LOWER MISSISSIPPI...LOWER OHIO AND TENNESSEE VALLEYS. A COLD FRONT TRAILING SOUTH FROM THE LOW WILL SERVE AS A FOCUS FOR INTENSE THUNDERSTORM DEVELOPMENT LATE THIS AFTERNOON THROUGH TONIGHT OVER PARTS OF ILLINOIS...SOUTHEAST MISSOURI...ARKANSAS...AND LOUISIANA AS THE FRONT ENCOUNTERS THE INCREASINGLY WARM AND HUMID AIR. AS THE STORMS BUILD AND INTERACT WITH THE JET STREAM WINDS...SOME OF THEM LIKELY WILL BECOME LONG-LIVED SUPERCELLS...POSING A RISK FOR STRONG TORNADOES IN ADDITION TO DAMAGING WIND AND HAIL. THE TORNADO THREAT SHOULD BE GREATEST THIS EVENING AND EARLY TONIGHT OVER EASTERN ARKANSAS...NORTHERN MISSISSIPPI...AND WESTERN TENNESSEE. THE STORMS LIKELY WILL EVOLVE INTO AN EXTENSIVE LINE LATER TONIGHT...EXTENDING THE RISK FOR DAMAGING WIND AND POSSIBLE TORNADOES THROUGH DAWN MONDAY NORTHWARD AND EASTWARD TO THE WESTERN SLOPES OF THE SOUTHERN AND CENTRAL APPALACHIANS. STATE AND LOCAL EMERGENCY MANAGERS ARE MONITORING THIS DEVELOPING SITUATION. THOSE IN THE THREATENED AREA ARE URGED TO REVIEW SEVERE WEATHER SAFETY RULES AND TO LISTEN TO RADIO...TELEVISION...AND NOAA WEATHER RADIO FOR POSSIBLE WATCHES...WARNINGS...AND STATEMENTS LATER TODAY. ..GUYER/MEAD/CORFIDI.. 01/22/2012