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000 

WWUS20 KWNS 252341

SEL2

SPC WW 252341

ARZ000-ILZ000-KYZ000-MOZ000-TNZ000-260700-



URGENT - IMMEDIATE BROADCAST REQUESTED

SEVERE THUNDERSTORM WATCH NUMBER 752

NWS STORM PREDICTION CENTER NORMAN OK

640 PM CDT FRI JUL 25 2008



THE NWS STORM PREDICTION CENTER HAS ISSUED A

SEVERE THUNDERSTORM WATCH FOR PORTIONS OF



       NORTHEAST ARKANSAS

       EXTREME SOUTHERN ILLINOIS

       EXTREME WESTERN KENTUCKY

       SOUTHEAST MISSOURI

       EXTREME NORTHWEST TENNESSEE



EFFECTIVE THIS FRIDAY NIGHT AND SATURDAY MORNING FROM 640 PM

UNTIL 200 AM CDT.



HAIL TO 1 INCH IN DIAMETER...THUNDERSTORM WIND GUSTS TO 70

MPH...AND DANGEROUS LIGHTNING ARE POSSIBLE IN THESE AREAS.



THE SEVERE THUNDERSTORM WATCH AREA IS APPROXIMATELY ALONG AND 90

STATUTE MILES EAST AND WEST OF A LINE FROM 10 MILES NORTH

NORTHEAST OF JEFFERSON CITY MISSOURI TO 25 MILES SOUTH SOUTHWEST

OF DYERSBURG TENNESSEE.  FOR A COMPLETE DEPICTION OF THE WATCH

SEE THE ASSOCIATED WATCH OUTLINE UPDATE (WOUS64 KWNS WOU2).



REMEMBER...A SEVERE THUNDERSTORM WATCH MEANS CONDITIONS ARE

FAVORABLE FOR SEVERE THUNDERSTORMS IN AND CLOSE TO THE WATCH

AREA. PERSONS IN THESE AREAS SHOULD BE ON THE LOOKOUT FOR

THREATENING WEATHER CONDITIONS AND LISTEN FOR LATER STATEMENTS

AND POSSIBLE WARNINGS. SEVERE THUNDERSTORMS CAN AND OCCASIONALLY

DO PRODUCE TORNADOES.



OTHER WATCH INFORMATION...CONTINUE...WW 749...WW 750...WW 751...



DISCUSSION...EXPANDING CLUSTERS OF INTENSE THUNDERSTORMS EXPECTED TO

CONTINUE TO POSE PRIMARILY A DAMAGING WIND THREAT THROUGH THIS

EVENING. ACTIVITY  IS DEVELOPING WITHIN VERY UNSTABLE CONDITIONS AND

ALONG RESIDUAL OUTFLOW REINFORCED FRONTAL ZONE DRAPED NW-SE ACROSS

THE REGION. LARGE SCALE ASCENT MAY BE ENHANCED AS WEAK MCS TRACKS

ACROSS NRN MO WHILE NARROW BELT OF 30-40KT NWLY MID LEVEL FLOW MAY

AID STORM PERSISTENCE/INTENSITY. BULK OF ACTIVITY IS CURRENTLY

EXHIBITING MULTICELLULAR CHARACTERISTICS WHERE STORM MERGERS IN

HIGHLY UNSTABLE AIR SHOULD SUPPORT DAMAGING DOWNBURST WINDS. WITH

TIME...THESE MERGERS MAY ALLOW A LARGER CLUSTER OF STORMS TO PERSIST

AND SPREAD ESEWD INTO WRN KY/TN WITH WIND DAMAGE AND MARGINAL HAIL

THREATS CONTINUING.



AVIATION...A FEW SEVERE THUNDERSTORMS WITH HAIL SURFACE AND ALOFT

TO 1 INCH. EXTREME TURBULENCE AND SURFACE WIND GUSTS TO 60 KNOTS.

A FEW CUMULONIMBI WITH MAXIMUM TOPS TO 550. MEAN STORM MOTION

VECTOR 29025.





...CARBIN

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