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156 

WWUS20 KWNS 191437

SEL5

SPC WW 191437

GAZ000-NCZ000-SCZ000-VAZ000-CWZ000-192200-



URGENT - IMMEDIATE BROADCAST REQUESTED

SEVERE THUNDERSTORM WATCH NUMBER 585

NWS STORM PREDICTION CENTER NORMAN OK

1035 AM EDT SUN AUG 19 2012



THE NWS STORM PREDICTION CENTER HAS ISSUED A

SEVERE THUNDERSTORM WATCH FOR PORTIONS OF



       FAR EASTERN GEORGIA

       EASTERN NORTH CAROLINA

       EASTERN SOUTH CAROLINA

       FAR SOUTHEAST VIRGINIA

       COASTAL WATERS



EFFECTIVE THIS SUNDAY MORNING AND EVENING FROM 1035 AM UNTIL 600

PM EDT.



HAIL TO 1 INCH 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 45

STATUTE MILES EITHER SIDE OF A LINE FROM 35 MILES EAST NORTHEAST

OF ELIZABETH CITY NORTH CAROLINA TO 50 MILES SOUTHWEST OF

SAVANNAH GEORGIA.  FOR A COMPLETE DEPICTION OF THE WATCH SEE THE

ASSOCIATED WATCH OUTLINE UPDATE (WOUS64 KWNS WOU5).



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.



DISCUSSION...BROKEN BAND OF TSTMS ONGOING FROM ENE RZZ TO WNW OF SAV

IS EXPECTED TO INTENSIFY LATE THIS MORNING INTO AFTERNOON OWING TO

THE INFLUX OF A WARM...MOIST AIR MASS WHERE MLCAPE HAS INCREASED TO

1000-2000 J/KG.  VERTICAL SHEAR SHOULD ALSO STEADILY INCREASE TODAY

AS REGION IS GLANCED BY A SERIES OF MIDLEVEL PERTURBATIONS

TRANSLATING NEWD ALONG THE APPALACHIANS.  AS SUCH...SETUP WILL

BECOME INCREASINGLY SUPPORTIVE OF A FEW SUPERCELLS AND BOWING

STRUCTURES CAPABLE OF MAINLY DAMAGING WIND GUSTS.  A BRIEF TORNADO

IS ALSO POSSIBLE OVER FAR SERN VA/NERN NC WHERE LOCALLY BACKED

NEAR-SURFACE WINDS ARE ENHANCING LOW-LEVEL SHEAR.



AVIATION...A FEW SEVERE THUNDERSTORMS WITH HAIL SURFACE AND ALOFT

TO 1 INCH. EXTREME TURBULENCE AND SURFACE WIND GUSTS TO 60 KNOTS.

A FEW CUMULONIMBI WITH MAXIMUM TOPS TO 450. MEAN STORM MOTION

VECTOR 24025.





...MEAD

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