

552 

WWUS20 KWNS 311733

SEL2

SPC WW 311733

LAZ000-MSZ000-CWZ000-010000-



URGENT - IMMEDIATE BROADCAST REQUESTED

TORNADO WATCH NUMBER 552

NWS STORM PREDICTION CENTER NORMAN OK

1230 PM CDT THU OCT 31 2013



THE NWS STORM PREDICTION CENTER HAS ISSUED A



* TORNADO WATCH FOR PORTIONS OF

  SOUTHEAST LOUISIANA

  CENTRAL ASND SOUTHERN MISSISSIPPI

  COASTAL WATERS



* EFFECTIVE THIS THURSDAY AFTERNOON AND EVENING FROM 1230 PM

  UNTIL 700 PM CDT.



* PRIMARY THREATS INCLUDE...

  SEVERAL TORNADOES POSSIBLE

  SEVERAL DAMAGING WIND GUSTS TO 70 MPH POSSIBLE



THE TORNADO WATCH AREA IS APPROXIMATELY ALONG AND 60 STATUTE

MILES EAST AND WEST OF A LINE FROM 75 MILES NORTH NORTHWEST OF

MERIDIAN MISSISSIPPI TO 40 MILES SOUTHEAST OF BATON ROUGE

LOUISIANA.  FOR A COMPLETE DEPICTION OF THE WATCH SEE THE

ASSOCIATED WATCH OUTLINE UPDATE (WOUS64 KWNS WOU2).



PRECAUTIONARY/PREPAREDNESS ACTIONS...



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 551...



DISCUSSION...ERN LA SQLN EXPECTED TO CONTINUE EWD AT ABOUT 30 KTS

WHILE EMBEDDED STORMS MOVE MORE RAPIDLY ENE ALONG IT. AREA VWP DATA

SHOW VERY STRONG LOW TO MID-LVL SHEAR PERSISTING ACROSS WW

REGION...DESPITE THE FACT THAT THE BELT OF STRONGEST SSWLY 1 KM FLOW

IS BEGINNING TO SHIFT NWD INTO THE TN/OH VLYS. GIVEN RICH MOISTURE

IN PLACE AHEAD OF LINE...AND EXPECTED MODEST DIURNAL INCREASE IN SFC

TEMPS...A CONDITIONAL RISK FOR ISOLD TORNADOES/LOCALLY DMGG WIND

WILL CONTINUE...ESPECIALLY WITH ANY MORE SUSTAINED LEWPS AND

SMALL-SCALE BOWS.



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

SURFACE AND ALOFT TO 0.5 INCH. EXTREME TURBULENCE AND SURFACE

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

500. MEAN STORM MOTION VECTOR 24030.





...CORFIDI

