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URGENT - IMMEDIATE BROADCAST REQUESTED

TORNADO WATCH NUMBER 579

NWS STORM PREDICTION CENTER NORMAN OK

650 PM EST SAT DEC 14 2013



THE NWS STORM PREDICTION CENTER HAS ISSUED A



* TORNADO WATCH FOR PORTIONS OF

  SOUTHEAST GEORGIA

  EASTERN NORTH CAROLINA

  EASTERN SOUTH CAROLINA

  COASTAL WATERS



* EFFECTIVE THIS SATURDAY NIGHT AND SUNDAY MORNING FROM 650 PM

  UNTIL 200 AM EST.



* PRIMARY THREATS INCLUDE...

  SEVERAL TORNADOES POSSIBLE

  SEVERAL DAMAGING WIND GUSTS TO 70 MPH POSSIBLE



THE TORNADO WATCH AREA IS APPROXIMATELY ALONG AND 35 STATUTE

MILES EITHER SIDE OF A LINE FROM 40 MILES NORTH OF CAPE HATTERAS

NORTH CAROLINA TO 75 MILES WEST SOUTHWEST OF CHARLESTON SOUTH

CAROLINA.  FOR A COMPLETE DEPICTION OF THE WATCH SEE THE

ASSOCIATED WATCH OUTLINE UPDATE (WOUS64 KWNS WOU9).



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...SHOWERS/TSTMS EXPECTED TO CONTINUE FORMING OVER THE S

ATLANTIC CSTL PLN AND ADJACENT CSTL WATERS THROUGH LATE TNGT ALONG

THREE MAIN AXES OF LOW-LVL ASCENT.../1/ SW-NE COLD FRONT THAT ATTM

EXTENDS FROM GSB INTO S CNTRL G.../2/ PRE-FRONTAL CONFLUENCE ZONE

FROM CHS SSW TO NEAR GNV...AND /3/ OFFSHORE CONFLUENCE AXIS

EXTENDING SSW FROM ILM.

THE DEEP WIND ACROSS ENTIRE REGION WILL REMAIN FAVORABLE FOR

SUPERCELLS...ALTHOUGH LOW-LVL SPEED/DIRECTIONAL SHEAR WILL REMAIN

GREATEST OVER ERN NC...I.E. E OF CONFLUENCE AXIS NOW NEAR ILM...AS

SFC LOW DEEPENS OVER NE NC. BUOYANCY WILL BE WEAK THROUGHOUT...BUT

GREATEST OVER SC AND ERN GA...WHERE SBCAPE MAY LOCALLY EXCEED 750

J/KG.

THE OVERALL SETUP...WITH CONTINUED MOISTENING EXPECTED AT LWR

LVLS...IS ONE THAT WILL FAVOR A PERSISTENT...LOW CONDITIONAL THREAT

FOR ISOLD TORNADOES AND/OR LOCALLY DMGG WIND GUSTS THROUGH LATE

TNGT.



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

400. MEAN STORM MOTION VECTOR 22050.





...CORFIDI

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