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WWUS20 KWNS 221548

SEL4

SPC WW 221548

ARZ000-222200-



URGENT - IMMEDIATE BROADCAST REQUESTED

SEVERE THUNDERSTORM WATCH NUMBER 214

NWS STORM PREDICTION CENTER NORMAN OK

1045 AM CDT TUE APR 22 2008



THE NWS STORM PREDICTION CENTER HAS ISSUED A

SEVERE THUNDERSTORM WATCH FOR PORTIONS OF



       MUCH OF ARKANSAS



EFFECTIVE THIS TUESDAY MORNING AND AFTERNOON FROM 1045 AM UNTIL

500 PM CDT.



HAIL TO 2.5 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 60

STATUTE MILES NORTH AND SOUTH OF A LINE FROM 30 MILES NORTH OF DE

QUEEN ARKANSAS TO 35 MILES SOUTH SOUTHEAST OF JONESBORO ARKANSAS.

 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 213...



DISCUSSION...SEVERE THUNDERSTORMS DEVELOPING INTO NRN AR ATTM.  WITH

A VERY UNSTABLE AIR MASS AVAILABLE ACROSS WATCH AREA WITH HEATING

REMOVING MUCH OF INHIBITION BY EARLY AFTERNOON...STORMS EXPECTED TO

CONTINUE AND INCREASE IN NUMBER/INTENSITY AS THEY PROPAGATE S/SEWD

INTO MLCAPES UPWARD OF 3000 J/KG. PRIMARY THREAT WILL BE LARGE

HAIL...WITH DAMAGING WINDS ASSOCIATED WITH DEVELOPING COLD POOLS.



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

TO 2.5 INCHES. EXTREME TURBULENCE AND SURFACE WIND GUSTS TO 60

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

MOTION VECTOR 32025.





...HALES

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