

731 

WWUS20 KWNS 051541

SEL4

SPC WW 051541

MSZ000-052000-



URGENT - IMMEDIATE BROADCAST REQUESTED

SEVERE THUNDERSTORM WATCH NUMBER 144

NWS STORM PREDICTION CENTER NORMAN OK

1040 AM CDT THU APR 5 2012



THE NWS STORM PREDICTION CENTER HAS ISSUED A

SEVERE THUNDERSTORM WATCH FOR PORTIONS OF



       SOUTHERN MISSISSIPPI



EFFECTIVE THIS THURSDAY MORNING AND AFTERNOON FROM 1040 AM UNTIL

300 PM CDT.



HAIL TO 2 INCHES IN DIAMETER...THUNDERSTORM WIND GUSTS TO 70

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



THE SEVERE THUNDERSTORM WATCH AREA IS APPROXIMATELY ALONG AND 70

STATUTE MILES EAST AND WEST OF A LINE FROM 45 MILES NORTH

NORTHWEST OF PINE BELT MISSISSIPPI TO 30 MILES SOUTHWEST OF PINE

BELT MISSISSIPPI.  FOR A COMPLETE DEPICTION OF THE WATCH SEE THE

ASSOCIATED WATCH OUTLINE UPDATE (WOUS64 KWNS WOU4).



REMEMBER...A SEVERE THUNDERSTORM WATCH MEANS CONDITIONS ARE

FAVORABLE FOR 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. SEVERE THUNDERSTORMS CAN AND OCCASIONALLY

DO PRODUCE TORNADOES.



OTHER WATCH INFORMATION...CONTINUE...WW 143...



DISCUSSION...TRAILING COLD POOL ASSOCIATED WITH BOWING MCS MOVING

INTO WRN AL WILL CONTINUE TO FOSTER TSTM DEVELOPMENT TODAY WITHIN A

MODERATELY UNSTABLE AIR MASS WITH MLCAPE APPROACHING 1000-2000 J/KG.

GIVEN 50-60 KT OF DEEP WLY SHEAR IN PLACE...SETUP WILL BE SUPPORTIVE

OF SUPERCELLS AND BOWING STRUCTURES CAPABLE OF MAINLY DAMAGING WINDS

AND HAIL.



AVIATION...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 28030.





...MEAD

