

000 

WWUS20 KWNS 180318

SEL8

SPC WW 180318

ARZ000-OKZ000-181100-



URGENT - IMMEDIATE BROADCAST REQUESTED

TORNADO WATCH NUMBER 128

NWS STORM PREDICTION CENTER NORMAN OK

1015 PM CDT MON MAR 17 2008



THE NWS STORM PREDICTION CENTER HAS ISSUED A

TORNADO WATCH FOR PORTIONS OF



       CENTRAL AND NORTHERN ARKANSAS

       EASTERN OKLAHOMA



EFFECTIVE THIS MONDAY NIGHT AND TUESDAY MORNING FROM 1015 PM

UNTIL 600 AM CDT.



TORNADOES...HAIL TO 1.5 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 NORTH AND SOUTH OF A LINE FROM 35 MILES EAST OF BATESVILLE

ARKANSAS TO 45 MILES WEST SOUTHWEST OF MCALESTER OKLAHOMA.  FOR A

COMPLETE DEPICTION OF THE WATCH SEE THE ASSOCIATED WATCH OUTLINE

UPDATE (WOUS64 KWNS WOU8).



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...THIS TORNADO WATCH REPLACES TORNADO

WATCH NUMBER 125. WATCH NUMBER 125 WILL NOT BE IN EFFECT AFTER

1015 PM CDT. CONTINUE...WW 126...WW 127...



DISCUSSION...SCTD SEMI-DISCRETE STORMS/OCCASIONAL SUPERCELLS

EXPECTED TO CONTINUE DEVELOPING ALONG DIFFUSE WARM FRONT FROM SE OK

INTO CNTRL AR AS BOUNDARY LIFTS SLOWLY NWWD BENEATH 60+ KT SW MID

LEVEL FLOW.  WHILE MOST OF THE STORMS LIKELY WILL BE SLIGHTLY

ELEVATED...VERY STRONG LOW-LEVEL SHEAR /0-1 KM SRH AOA 400 M2 PER

S2/ AND INCREASINGLY WARM/MOIST AIR IMMEDIATELY ABOVE THE SFC

SUGGEST POSSIBILITY FOR ISOLATED TORNADOES.



AVIATION...TORNADOES AND 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

450. MEAN STORM MOTION VECTOR 22040.





...CORFIDI

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