

806 

WWUS20 KWNS 242040

SEL4

SPC WW 242040

ARZ000-LAZ000-MOZ000-MSZ000-TNZ000-250400-



URGENT - IMMEDIATE BROADCAST REQUESTED

TORNADO WATCH NUMBER 14

NWS STORM PREDICTION CENTER NORMAN OK

235 PM CST THU FEB 24 2011



THE NWS STORM PREDICTION CENTER HAS ISSUED A

TORNADO WATCH FOR PORTIONS OF



       PARTS OF EASTERN ARKANSAS

       SMALL PART OF NORTHEAST LOUISIANA

       SMALL PART OF SOUTHEASTERN MISSOURI

       MUCH OF NORTHERN MISSISSIPPI

       WESTERN AND PARTS OF MIDDLE TENNESSEE



EFFECTIVE THIS THURSDAY AFTERNOON AND EVENING FROM 235 PM UNTIL

1000 PM CST.



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 100 STATUTE

MILES EAST AND WEST OF A LINE FROM 40 MILES NORTH NORTHEAST OF

DYERSBURG TENNESSEE TO 50 MILES SOUTH SOUTHEAST OF GREENVILLE

MISSISSIPPI.  FOR A COMPLETE DEPICTION OF THE WATCH SEE THE

ASSOCIATED WATCH OUTLINE UPDATE (WOUS64 KWNS WOU4).



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 13...



DISCUSSION...INTENSIFYING SURFACE LOW OVER CENTRAL AR IN RESPONSE TO

STRONG S/W TROUGH APPROACHING FROM THE W.  E/W WARM FRONT STILL

MOVING NWD THRU NERN AR/WRN TN WITH WARM SECTOR AIR MASS NOW

UNSTABLE AND NEARLY UNCAPPED.  WITH VERY STRONG SHEAR PROFILES AND

LOW LEVEL CONVERGENCE POTENTIAL FOR SUPERCELLS/TORNADOES EXPECTED TO

DEVELOP EWD ACROSS THE WATCH AREA THRU THE EVENING.  POTENTIAL FOR

MORE DISCRETE STORMS TO DEVELOP ACROSS THE WARM SECTOR WHICH WOULD

LEAD TO GREATER THREAT OF TORNADOES PRIOR TO THE ARRIVAL OF A MORE

QLCS/WIND DAMAGE THREAT THAT IS EXPECTED TO EVOLVE BY THIS EVENING.



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

500. MEAN STORM MOTION VECTOR 24045.





...HALES

