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340 

WWUS20 KWNS 112106

SEL0

SPC WW 112106

ALZ000-MSZ000-120400-



URGENT - IMMEDIATE BROADCAST REQUESTED

TORNADO WATCH NUMBER 130

NWS STORM PREDICTION CENTER NORMAN OK

405 PM CDT MON APR 11 2011



THE NWS STORM PREDICTION CENTER HAS ISSUED A

TORNADO WATCH FOR PORTIONS OF



       MUCH OF WESTERN AND CENTRAL ALABAMA

       PARTS OF SOUTHERN AND EASTERN MISSISSIPPI



EFFECTIVE THIS MONDAY AFTERNOON AND EVENING FROM 405 PM UNTIL

1100 PM CDT.



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 70 STATUTE

MILES EAST AND WEST OF A LINE FROM 30 MILES SOUTH SOUTHWEST OF

PINE BELT MISSISSIPPI TO 50 MILES NORTH NORTHWEST OF BIRMINGHAM

ALABAMA.  FOR A COMPLETE DEPICTION OF THE WATCH SEE THE

ASSOCIATED WATCH OUTLINE UPDATE (WOUS64 KWNS WOU0).



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 128...WW 129...



DISCUSSION...INCREASINGLY UNSTABLE AIR MASS SPREADING NEWD INTO WRN

AL AHEAD INSTABILITY LINE ACROSS CENTRAL MS.  WITH VERY STRONG SHEAR

PROFILES IN PLACE AND APPROACHING STRONG UPPER TROUGH...SEVERE

THUNDERSTORMS INCLUDING SUPERCELLS ARE EXPECTED TO DEVELOP/INCREASE

ALONG AND AHEAD OF INSTABILITY LINE.  DISCRETE SUPERCELLS ARE LIKELY

MOVING FROM SRN MS INTO AL WHICH WOULD INCREASE POTENTIAL FOR

TORNADOES.



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 24035.





...HALES

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