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URGENT - IMMEDIATE BROADCAST REQUESTED

TORNADO WATCH NUMBER 122

NWS STORM PREDICTION CENTER NORMAN OK

315 AM CDT SAT MAY 1 2010



THE NWS STORM PREDICTION CENTER HAS ISSUED A

TORNADO WATCH FOR PORTIONS OF



       FAR NORTHWEST ALABAMA

       CENTRAL AND EASTERN ARKANSAS

       NORTHERN MISSISSIPPI

       WESTERN AND MIDDLE TENNESSEE



EFFECTIVE THIS SATURDAY MORNING FROM 315 AM UNTIL 1100 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 125 STATUTE

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

TENNESSEE TO 15 MILES SOUTH SOUTHEAST OF MONTICELLO ARKANSAS.

FOR A COMPLETE DEPICTION OF THE WATCH SEE THE ASSOCIATED WATCH

OUTLINE UPDATE (WOUS64 KWNS WOU2).



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 119. WATCH NUMBER 119 WILL NOT BE IN EFFECT AFTER

315 AM CDT. CONTINUE...WW 118...WW 120...WW 121...



DISCUSSION...BKN BAND OF TSTMS WITH EMBEDDED SUPERCELLS...NOW

EXTENDING FROM E CNTRL AR NE INTO WRN KY EXPECTED TO CONTINUE SLOWLY

EWD.  ADDITIONAL SMALLER STORMS MAY FORM IN CONFLUENT MOIST LOW LVL

FLOW EXTENDING FROM SRN AR INTO NRN MS.  GIVEN STRENGTH OF LOW LVL

DIRECTIONAL SHEAR...STRENGTH OF DEEP SWLY SHEAR...AND QUALITY OF

MOISTURE...SETUP MAY YIELD ISOLD TORNADOES IN ADDITION TO DMGG

WIND/MARGINALLY SVR HAIL.  STORM STRENGTH/TORNADO THREAT MAY

INCREASE TOWARD LATE MORNING IN RESPONSE TO DAYTIME

HEATING...ESPECIALLY FROM SRN AR ENE INTO NRN MS.



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

500. MEAN STORM MOTION VECTOR 24040.





...CORFIDI

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