Here We Go Again (Not Alabama)

PUBLIC SEVERE WEATHER OUTLOOK
NWS STORM PREDICTION CENTER NORMAN OK
1132 AM CDT TUE APR 19 2011

…WIDESPREAD SEVERE THUNDERSTORMS EXPECTED OVER PARTS OF THE
OZARKS…THE LOWER AND MIDDLE MISSISSIPPI VALLEYS…AND THE LOWER
OHIO VALLEY LATER TODAY THROUGH TONIGHT…

THE NWS STORM PREDICTION CENTER IN NORMAN OK IS FORECASTING THE
DEVELOPMENT OF TORNADOES…DAMAGING WINDS…AND LARGE HAIL FROM THE
OZARKS INTO PARTS OF MISSISSIPPI AND LOWER OHIO VALLEYS THIS
AFTERNOON THROUGH TONIGHT.

THE AREAS MOST LIKELY TO EXPERIENCE THIS ACTIVITY INCLUDE

NORTHERN AND WESTERN ARKANSAS
CENTRAL AND SOUTHERN ILLINOIS
CENTRAL AND SOUTHERN INDIANA
WESTERN AND NORTHERN KENTUCKY
SOUTHERN AND EASTERN MISSOURI
WESTERN OHIO
EASTERN OKLAHOMA
NORTHWEST TENNESSEE

ELSEWHERE…SURROUNDING THE AREA OF GREATEST RISK…SEVERE STORMS
ALSO MAY OCCUR FROM EASTERN PORTIONS OF THE SOUTHERN PLAINS
NORTHEASTWARD INTO THE LOWER GREAT LAKES

A POTENT JET STREAM DISTURBANCE NOW OVER THE SOUTHERN AND CENTRAL
HIGH PLAINS WILL CONTINUE EAST ACROSS THE SOUTHERN PLAINS
TODAY…BEFORE TURNING NORTHEAST ACROSS THE MID MISSISSIPPI AND
LOWER OHIO VALLEYS TONIGHT AND EARLY WEDNESDAY. AT THE SAME
TIME…AN ATTENDANT SURFACE LOW AND COLD FRONT WILL TRACK FROM
WEST-CENTRAL MISSOURI LATE THIS MORNING TO NORTHERN OHIO BY DAWN
WEDNESDAY.

AHEAD OF THE LOW…A BROAD CURRENT OF WARM…SOUTHERLY FLOW ALREADY
IN PLACE OVER THE SOUTH CENTRAL STATES WILL STRENGTHEN AND SPREAD
MOISTURE EAST-NORTHEAST ACROSS THE OHIO VALLEY…BENEATH FAST
SOUTHWESTERLY JET STREAM WINDS.

AS THE JET STREAM IMPULSE AND SURFACE LOW CONTINUE EASTWARD…AND AS
DAYTIME HEATING FURTHER DESTABILIZES THE REGION…POWERFUL
THUNDERSTORMS APPEAR LIKELY THIS AFTERNOON AND EVENING ALONG AND
AHEAD OF THE COLD FRONT…AND AHEAD OF THE SURFACE LOW.

CONDITIONS INITIALLY WILL BE FAVORABLE FOR INDIVIDUAL SUPERCELL
STORMS WITH TORNADOES…LARGE HAIL…AND DAMAGING WINDS. WITH
TIME…HOWEVER…THE STORMS SHOULD MERGE INTO EXTENSIVE BAND OR INTO
SEVERAL LARGE CLUSTERS. THESE COULD PRODUCE MORE WIDESPREAD WIND
DAMAGE…IN ADDITION TO A CONTINUING RISK FOR ISOLATED TORNADOES AND
HAIL…THROUGH EARLY WEDNESDAY.

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.

Category: Severe Weather