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WWUS20 KWNS 210126

SEL7

SPC WW 210126

LAZ000-MSZ000-CWZ000-210900-



URGENT - IMMEDIATE BROADCAST REQUESTED

TORNADO WATCH NUMBER 17

NWS STORM PREDICTION CENTER NORMAN OK

725 PM CST THU FEB 20 2014



THE NWS STORM PREDICTION CENTER HAS ISSUED A



* TORNADO WATCH FOR PORTIONS OF

  SOUTHERN LOUISIANA

  SOUTHERN MISSISSIPPI

  COASTAL WATERS



* EFFECTIVE THIS THURSDAY NIGHT AND FRIDAY MORNING FROM 725 PM

  UNTIL 300 AM CST.



* PRIMARY THREATS INCLUDE...

  SEVERAL TORNADOES POSSIBLE

  SEVERAL DAMAGING WIND GUSTS TO 70 MPH POSSIBLE

  A FEW LARGE HAIL EVENTS TO 1.5 INCHES IN DIAMETER POSSIBLE



THE TORNADO WATCH AREA IS APPROXIMATELY ALONG AND 125 STATUTE

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

BATON ROUGE LOUISIANA TO 30 MILES SOUTH OF INTRACOASTAL CITY

LOUISIANA.  FOR A COMPLETE DEPICTION OF THE WATCH SEE THE

ASSOCIATED WATCH OUTLINE UPDATE (WOUS64 KWNS WOU7).



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 9...WW 11...WW 13...WW

14...WW 15...WW 16...



DISCUSSION...TSTMS EXPECTED TO PERSIST AND POSSIBLY INCREASE OVER

SRN LA AND ADJACENT MS THROUGH EARLY FRI AS REGION IS GLANCED BY SRN

FRINGE OF SECONDARY UPR IMPULSE /NOW OVER OK/ ROTATING THROUGH BASE

OF LARGER-SCALE MIDWESTERN TROUGH. QUALITY OF LOW-LVL MOISTURE

INFLOW AND MODEST LOW-LVL CONFLUENCE/FORCING FOR ASCENT THAT WILL

DIMINISH LIKELIHOOD FOR STRONGLY-LINEAR CONVECTION SUGGEST A

CONDITIONAL RISK FOR A TORNADO OR TWO...IN ADDITION TO DMGG WIND AND

PERHAPS SVR HAIL.



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

SURFACE AND ALOFT TO 1.5 INCHES. EXTREME TURBULENCE AND SURFACE

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

500. MEAN STORM MOTION VECTOR 24035.





...CORFIDI

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