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119 

WWUS20 KWNS 090332

SEL7

SPC WW 090332

ARZ000-ILZ000-KYZ000-MOZ000-TNZ000-091100-



URGENT - IMMEDIATE BROADCAST REQUESTED

SEVERE THUNDERSTORM WATCH NUMBER 277

NWS STORM PREDICTION CENTER NORMAN OK

1130 PM EDT FRI MAY 8 2009



THE NWS STORM PREDICTION CENTER HAS ISSUED A

SEVERE THUNDERSTORM WATCH FOR PORTIONS OF



       NORTHEAST ARKANSAS

       FAR SOUTHERN ILLINOIS

       CENTRAL AND SOUTHERN KENTUCKY

       SOUTHEAST MISSOURI

       NORTHERN TENNESSEE



EFFECTIVE THIS FRIDAY NIGHT AND SATURDAY MORNING FROM 1130 PM

UNTIL 700 AM EDT.



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 50

STATUTE MILES NORTH AND SOUTH OF A LINE FROM 20 MILES NORTH

NORTHWEST OF WALNUT RIDGE ARKANSAS TO 40 MILES EAST SOUTHEAST OF

JACKSON KENTUCKY.  FOR A COMPLETE DEPICTION OF THE WATCH SEE THE

ASSOCIATED WATCH OUTLINE UPDATE (WOUS64 KWNS WOU7).



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...THIS SEVERE THUNDERSTORM WATCH REPLACES

TORNADO WATCH NUMBER 271. WATCH NUMBER 271 WILL NOT BE IN EFFECT

AFTER 1130 PM EDT. CONTINUE...WW 272...WW 273...WW 274...WW

275...WW 276...



DISCUSSION...TSTMS EXPECTED TO PERSIST AND POSSIBLY INCREASE ALONG

WSW-ENE AXIS OF SLIGHTLY-ELEVATED WAA/CONFLUENCE FROM THE AR/MO

BORDER INTO SRN KY.  QUALITY OF WARM SECTOR MOISTURE AND MODERATE

WLY MID LVL FLOW SUGGEST POTENTIAL FOR A FEW SUSTAINED STORMS WITH

HAIL.  ACTIVITY MAY TEND TO BACK-BUILD/MERGE/REGENERATE OVER WW

THROUGH EARLY SAT.  THIS MAY ALLOW FOR DEVELOPMENT OF

WEAKLY-ORGANIZED LEWPS WITH LOCALLY DMGG WIND/HAIL AND PERHAPS AN

ISOLD TORNADO.



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 500. MEAN STORM

MOTION VECTOR 26035.





...CORFIDI

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