

791 

WWUS20 KWNS 222319

SEL5

SPC WW 222319

ARZ000-MOZ000-MSZ000-TNZ000-230600-



URGENT - IMMEDIATE BROADCAST REQUESTED

TORNADO WATCH NUMBER 5

NWS STORM PREDICTION CENTER NORMAN OK

520 PM CST SUN JAN 22 2012



THE NWS STORM PREDICTION CENTER HAS ISSUED A

TORNADO WATCH FOR PORTIONS OF



       EASTERN ARKANSAS

       THE MISSOURI BOOTHEEL

       NORTHWEST MISSISSIPPI

       WESTERN TENNESSEE



EFFECTIVE THIS SUNDAY AFTERNOON FROM 520 PM UNTIL MIDNIGHT CST.



...THIS IS A PARTICULARLY DANGEROUS SITUATION...



DESTRUCTIVE TORNADOES...LARGE HAIL TO 2 INCHES IN DIAMETER...

THUNDERSTORM WIND GUSTS TO 80 MPH...AND DANGEROUS LIGHTNING ARE

POSSIBLE IN THESE AREAS.



THE TORNADO WATCH AREA IS APPROXIMATELY ALONG AND 85 STATUTE

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

DYERSBURG TENNESSEE TO 25 MILES WEST SOUTHWEST OF GREENVILLE

MISSISSIPPI.  FOR A COMPLETE DEPICTION OF THE WATCH SEE THE

ASSOCIATED WATCH OUTLINE UPDATE (WOUS64 KWNS WOU5).



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.



DISCUSSION...THUNDERSTORMS WILL INCREASE IN COVERAGE/INTENSITY THE

NEXT FEW HOURS ACROSS CENTRAL/ERN AR AS THE LOW LEVELS DESTABILIZE

AND ASCENT OVERSPREADS THE AREA FROM W TO E...IN ADVANCE OF A STRONG

SHORTWAVE TROUGH NOW OVER ERN OK.  LOW-LEVEL SHEAR AND MOISTURE WILL

INCREASES THROUGH THE EVENING ACROSS NE AR/WRN TN...AND STORMS ARE

EXPECTED TO EVOLVE INTO A BROKEN BAND WITH BOTH EMBEDDED SUPERCELLS

AND EMBEDDED BOWING SEGMENTS.  VERTICAL SHEAR...MOISTURE...AND THE

MIXED STORM MODES WILL FAVOR A RISK OF A FEW STRONG

TORNADOES...ALONG WITH DAMAGING WINDS AND LARGE HAIL THROUGH

TONIGHT.



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

SURFACE AND ALOFT TO 2 INCHES. EXTREME TURBULENCE AND SURFACE

WIND GUSTS TO 70 KNOTS. A FEW CUMULONIMBI WITH MAXIMUM TOPS TO

500. MEAN STORM MOTION VECTOR 24045.





...THOMPSON

