

393 

WWUS20 KWNS 051415

SEL3

SPC WW 051415

ALZ000-MSZ000-052200-



URGENT - IMMEDIATE BROADCAST REQUESTED

SEVERE THUNDERSTORM WATCH NUMBER 143

NWS STORM PREDICTION CENTER NORMAN OK

915 AM CDT THU APR 5 2012



THE NWS STORM PREDICTION CENTER HAS ISSUED A

SEVERE THUNDERSTORM WATCH FOR PORTIONS OF



       CENTRAL AND SOUTHERN ALABAMA

       FAR SOUTHEAST MISSISSIPPI



EFFECTIVE THIS THURSDAY MORNING AND AFTERNOON FROM 915 AM UNTIL

500 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 60

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

BIRMINGHAM ALABAMA TO 30 MILES WEST SOUTHWEST OF EVERGREEN

ALABAMA.  FOR A COMPLETE DEPICTION OF THE WATCH SEE THE

ASSOCIATED WATCH OUTLINE UPDATE (WOUS64 KWNS WOU3).



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 142...



DISCUSSION...BOW ECHO OVER E-CNTRL MS IS EXPECTED TO CONTINUE EWD

ACROSS AL TODAY...WITH ADDITIONAL STORM DEVELOPMENT ANTICIPATED

ALONG SRN FLANK OF CONVECTIVE SYSTEM.  12Z JAN SOUNDING APPEARS TO

BE A GOOD PROXY ENVIRONMENT FOR MCS...FEATURING MODERATE-STRONG

INSTABILITY /MUCAPE OF 2000-3000 J PER KG/ AND 60 KT OF DEEP WLY

SHEAR.  DAMAGING WINDS WILL BE THE PRIMARY HAZARD THROUGH SOME HAIL

WILL ALSO BE POSSIBLE.



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 27040.





...MEAD

