

261 

WWUS20 KWNS 222353

SEL4

SPC WW 222353

MSZ000-230500-



URGENT - IMMEDIATE BROADCAST REQUESTED

TORNADO WATCH NUMBER 774

NWS STORM PREDICTION CENTER NORMAN OK

555 PM CST THU OCT 22 2009



THE NWS STORM PREDICTION CENTER HAS ISSUED A

TORNADO WATCH FOR PORTIONS OF



       CENTRAL MISSISSIPPI



EFFECTIVE THIS THURSDAY AFTERNOON AND EVENING FROM 555 PM UNTIL

1100 PM CST.



TORNADOES...HAIL TO 1 INCH IN DIAMETER...THUNDERSTORM WIND GUSTS

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



THE TORNADO WATCH AREA IS APPROXIMATELY ALONG AND 40 STATUTE

MILES EAST AND WEST OF A LINE FROM 30 MILES NORTHWEST OF

GREENWOOD MISSISSIPPI TO 40 MILES EAST SOUTHEAST OF MC COMB

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 772...WW 773...



DISCUSSION...ISOLATED STRONG THUNDERSTORMS ARE TRACKING

NORTHEASTWARD ACROSS WESTERN MS.  DESPITE WEAK INSTABILITY...STRONG

LOW LEVEL AND DEEP LAYER VERTICAL SHEAR ARE COUPLING WITH INCREASING

LARGE SCALE FORCING FOR AN SUSTAINED BUT RATHER LOW THREAT OF AN

ISOLATED TORNADO OR TWO.



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

SURFACE AND ALOFT TO 1 INCH. EXTREME TURBULENCE AND SURFACE WIND

GUSTS TO 60 KNOTS. A FEW CUMULONIMBI WITH MAXIMUM TOPS TO 450.

MEAN STORM MOTION VECTOR 24035.





...HART



914 

WWUS20 KWNS 222353 CCA

SEL4

SPC WW 222353 CCA

MSZ000-230500-



URGENT - IMMEDIATE BROADCAST REQUESTED

TORNADO WATCH NUMBER 774...CORRECTED

NWS STORM PREDICTION CENTER NORMAN OK

735 PM CDT THU OCT 22 2009



CORRECTED FOR DAYLIGHT TIME



THE NWS STORM PREDICTION CENTER HAS ISSUED A

TORNADO WATCH FOR PORTIONS OF



       CENTRAL MISSISSIPPI



EFFECTIVE THIS THURSDAY NIGHT FROM 735 PM UNTIL MIDNIGHT CDT.



TORNADOES...HAIL TO 1 INCH IN DIAMETER...THUNDERSTORM WIND GUSTS

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



THE TORNADO WATCH AREA IS APPROXIMATELY ALONG AND 40 STATUTE

MILES EAST AND WEST OF A LINE FROM 30 MILES NORTHWEST OF

GREENWOOD MISSISSIPPI TO 40 MILES EAST SOUTHEAST OF MC COMB

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 773...



DISCUSSION...ISOLATED STRONG THUNDERSTORMS ARE TRACKING

NORTHEASTWARD ACROSS WESTERN MS.  DESPITE WEAK INSTABILITY...STRONG

LOW LEVEL AND DEEP LAYER VERTICAL SHEAR ARE COUPLING WITH INCREASING

LARGE SCALE FORCING FOR AN SUSTAINED BUT RATHER LOW THREAT OF AN

ISOLATED TORNADO OR TWO.



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

SURFACE AND ALOFT TO 1 INCH. EXTREME TURBULENCE AND SURFACE WIND

GUSTS TO 60 KNOTS. A FEW CUMULONIMBI WITH MAXIMUM TOPS TO 450.

MEAN STORM MOTION VECTOR 24035.





...HART

