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000 

WWUS20 KWNS 312313

SEL0

SPC WW 312313

ARZ000-MOZ000-OKZ000-TXZ000-010600-



URGENT - IMMEDIATE BROADCAST REQUESTED

TORNADO WATCH NUMBER 150

NWS STORM PREDICTION CENTER NORMAN OK

615 PM CDT MON MAR 31 2008



THE NWS STORM PREDICTION CENTER HAS ISSUED A

TORNADO WATCH FOR PORTIONS OF



       A LARGE PART OF SOUTHERN AND EASTERN ARKANSAS

       SMALL PART OF SOUTHEAST MISSOURI

       SMALL PART OF SOUTHEAST OKLAHOMA

       SMALL PART OF NORTHEAST TEXAS



EFFECTIVE THIS MONDAY NIGHT AND TUESDAY MORNING FROM 615 PM UNTIL

100 AM CDT.



TORNADOES...HAIL TO 2 INCHES IN DIAMETER...THUNDERSTORM WIND

GUSTS TO 70 MPH...AND DANGEROUS LIGHTNING ARE POSSIBLE IN THESE

AREAS.



THE TORNADO WATCH AREA IS APPROXIMATELY ALONG AND 60 STATUTE

MILES EITHER SIDE OF A LINE FROM 55 MILES EAST NORTHEAST OF

POPLAR BLUFF MISSOURI TO 55 MILES WEST OF TEXARKANA ARKANSAS.

FOR A COMPLETE DEPICTION OF THE WATCH SEE THE ASSOCIATED WATCH

OUTLINE UPDATE (WOUS64 KWNS WOU0).



REMEMBER...A TORNADO WATCH MEANS CONDITIONS ARE FAVORABLE FOR

TORNADOES AND 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.



OTHER WATCH INFORMATION...CONTINUE...WW 147...WW 148...WW 149...



DISCUSSION...WELL DEVELOPED SEVERE SQUALL LINE FROM S CENTRAL MO

INTO SERN OK EXPECTED TO CONTINUE E/SE THRU THE EVENING.  WITH MDT

INSTABILITY...50-60KT OF DEEP LAYER SHEAR...SUPERCELLS AND BOW

STRUCTURES EXPECTED TO BE ASSOCIATED WITH THE SQUALL LINE.

TORNADOES WILL BE POSSIBLE WITH ANY SUPERCELL AND LINEAR/BOW

SEGMENTS.



AVIATION...TORNADOES AND A FEW SEVERE THUNDERSTORMS WITH HAIL

SURFACE AND ALOFT TO 2 INCHES. EXTREME TURBULENCE AND SURFACE

WIND GUSTS TO 60 KNOTS. A FEW CUMULONIMBI WITH MAXIMUM TOPS TO

550. MEAN STORM MOTION VECTOR 24035.





...HALES

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