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000 

WWUS20 KWNS 110118

SEL4

SPC WW 110118

ARZ000-MOZ000-MSZ000-TNZ000-110600-



URGENT - IMMEDIATE BROADCAST REQUESTED

SEVERE THUNDERSTORM WATCH NUMBER 194

NWS STORM PREDICTION CENTER NORMAN OK

820 PM CDT THU APR 10 2008



THE NWS STORM PREDICTION CENTER HAS ISSUED A

SEVERE THUNDERSTORM WATCH FOR PORTIONS OF



       EASTERN ARKANSAS

       MISSOURI BOOTHEEL

       NORTHWEST MISSISSIPPI

       WEST TENNESSEE



EFFECTIVE THIS THURSDAY NIGHT AND FRIDAY MORNING FROM 820 PM

UNTIL 100 AM CDT.



HAIL TO 1.5 INCHES 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 35

STATUTE MILES EAST AND WEST OF A LINE FROM 35 MILES NORTH OF

DYERSBURG TENNESSEE TO 75 MILES SOUTHWEST OF MEMPHIS TENNESSEE.

FOR A COMPLETE DEPICTION OF THE WATCH SEE THE ASSOCIATED WATCH

OUTLINE UPDATE (WOUS64 KWNS WOU4).



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 191...WW 192...WW 193...



DISCUSSION...SECONDARY LINE OF THUNDERSTORMS HAS DEVELOPED OVER

EASTERN AR BENEATH EXTREMELY STRONG MID LEVEL JET.  SUFFICIENT

RESIDUAL INSTABILITY IN THIS REGION...COUPLED WITH STRONG DEEP LAYER

VERTICAL SHEAR...WILL POSE A RISK OF HAIL AND DAMAGING WINDS IN

STRONGER CELLS THROUGH THE EVENING.



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

TO 1.5 INCHES. EXTREME TURBULENCE AND SURFACE WIND GUSTS TO 60

KNOTS. A FEW CUMULONIMBI WITH MAXIMUM TOPS TO 400. MEAN STORM

MOTION VECTOR 22035.





...HART

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