

122 

WWUS20 KWNS 162050

SEL0

SPC WW 162050

LAZ000-CWZ000-170400-



URGENT - IMMEDIATE BROADCAST REQUESTED

TORNADO WATCH NUMBER 550

NWS STORM PREDICTION CENTER NORMAN OK

245 PM CST SUN NOV 16 2014



THE NWS STORM PREDICTION CENTER HAS ISSUED A



* TORNADO WATCH FOR PORTIONS OF

  SOUTHERN AND SOUTHEASTERN LOUISIANA

  COASTAL WATERS



* EFFECTIVE THIS SUNDAY AFTERNOON AND EVENING FROM 245 PM UNTIL

  1000 PM CST.



* PRIMARY THREATS INCLUDE...

  A COUPLE TORNADOES POSSIBLE

  SCATTERED DAMAGING WIND GUSTS TO 70 MPH POSSIBLE



THE TORNADO WATCH AREA IS APPROXIMATELY ALONG AND 65 STATUTE

MILES EAST AND WEST OF A LINE FROM 40 MILES NORTHEAST OF BATON

ROUGE LOUISIANA TO 40 MILES SOUTH SOUTHEAST OF INTRACOASTAL CITY

LOUISIANA.  FOR A COMPLETE DEPICTION OF THE WATCH SEE THE

ASSOCIATED WATCH OUTLINE UPDATE (WOUS64 KWNS WOU0).



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.



&&



DISCUSSION...BROKEN SQLN WITH SCTD EMBEDDED SUPERCELLS/LOW-AMPLITUDE

LEWPS ALONG SSW/NNE-ORIENTED SFC TROUGH ON WRN BORDER OF WW EXPECTED

TO EDGE SLOWLY E ACROSS SRN LA THIS EVE AS A WEAK SFC WAVE EVOLVES

NEAR BATON ROUGE. LATEST SFC DATA INDICATE THAT RICHER LOW-LVL

MOISTURE WILL CONTINUE TO MOVE ASHORE E OF THE TROUGH...WITH SFC

DEWPOINTS RISING INTO THE MID/UPR 60S F. AT THE SAME TIME...GRADUAL

TIGHTENING OF UPR HEIGHT GRADIENT/WEAK HEIGHT FALLS WILL SUPPORT A

MODEST INCREASE IN 40-50 KT WSWLY DEEP SHEAR. THIS SETUP MAY YIELD

SPORADIC STORMS CAPABLE OF LOCALLY DMGG WIND AND A TORNADO OR

TWO...ESPECIALLY ALONG AND S OF I-10/12.



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

450. MEAN STORM MOTION VECTOR 24030.





...CORFIDI



295 

WWUS20 KWNS 162050

SEL0

SPC WW 162050

LAZ000-CWZ000-170400-



URGENT - IMMEDIATE BROADCAST REQUESTED

TORNADO WATCH NUMBER 550

NWS STORM PREDICTION CENTER NORMAN OK

245 PM CST SUN NOV 16 2014



THE NWS STORM PREDICTION CENTER HAS ISSUED A



* TORNADO WATCH FOR PORTIONS OF

  SOUTHERN AND SOUTHEASTERN LOUISIANA

  COASTAL WATERS



* EFFECTIVE THIS SUNDAY AFTERNOON AND EVENING FROM 245 PM UNTIL

  1000 PM CST.



* PRIMARY THREATS INCLUDE...

  A COUPLE TORNADOES POSSIBLE

  SCATTERED DAMAGING WIND GUSTS TO 70 MPH POSSIBLE



THE TORNADO WATCH AREA IS APPROXIMATELY ALONG AND 65 STATUTE

MILES EAST AND WEST OF A LINE FROM 40 MILES NORTHEAST OF BATON

ROUGE LOUISIANA TO 40 MILES SOUTH SOUTHEAST OF INTRACOASTAL CITY

LOUISIANA.  FOR A COMPLETE DEPICTION OF THE WATCH SEE THE

ASSOCIATED WATCH OUTLINE UPDATE (WOUS64 KWNS WOU0).



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.



&&



DISCUSSION...BROKEN SQLN WITH SCTD EMBEDDED SUPERCELLS/LOW-AMPLITUDE

LEWPS ALONG SSW/NNE-ORIENTED SFC TROUGH ON WRN BORDER OF WW EXPECTED

TO EDGE SLOWLY E ACROSS SRN LA THIS EVE AS A WEAK SFC WAVE EVOLVES

NEAR BATON ROUGE. LATEST SFC DATA INDICATE THAT RICHER LOW-LVL

MOISTURE WILL CONTINUE TO MOVE ASHORE E OF THE TROUGH...WITH SFC

DEWPOINTS RISING INTO THE MID/UPR 60S F. AT THE SAME TIME...GRADUAL

TIGHTENING OF UPR HEIGHT GRADIENT/WEAK HEIGHT FALLS WILL SUPPORT A

MODEST INCREASE IN 40-50 KT WSWLY DEEP SHEAR. THIS SETUP MAY YIELD

SPORADIC STORMS CAPABLE OF LOCALLY DMGG WIND AND A TORNADO OR

TWO...ESPECIALLY ALONG AND S OF I-10/12.



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

450. MEAN STORM MOTION VECTOR 24030.





...CORFIDI

