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290 

WWUS20 KWNS 061206

SEL2

SPC WW 061206

NCZ000-VAZ000-CWZ000-061900-



URGENT - IMMEDIATE BROADCAST REQUESTED

TORNADO WATCH NUMBER 122

NWS STORM PREDICTION CENTER NORMAN OK

805 AM EDT MON APR 6 2009



THE NWS STORM PREDICTION CENTER HAS ISSUED A

TORNADO WATCH FOR PORTIONS OF



       EASTERN NORTH CAROLINA

       SOUTHEAST VIRGINIA

       COASTAL WATERS



EFFECTIVE THIS MONDAY MORNING AND AFTERNOON FROM 805 AM UNTIL 300

PM EDT.



TORNADOES...HAIL TO 1.5 INCHES IN DIAMETER...THUNDERSTORM WIND

GUSTS TO 70 MPH...AND DANGEROUS LIGHTNING ARE POSSIBLE IN THESE

AREAS.



THE TORNADO WATCH AREA IS APPROXIMATELY ALONG AND 85 STATUTE

MILES EAST AND WEST OF A LINE FROM 45 MILES SOUTHWEST OF

JACKSONVILLE NORTH CAROLINA TO 75 MILES NORTH NORTHEAST OF

NORFOLK VIRGINIA.  FOR A COMPLETE DEPICTION OF THE WATCH SEE THE

ASSOCIATED WATCH OUTLINE UPDATE (WOUS64 KWNS WOU2).



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 121...



DISCUSSION...SCATTERED THUNDERSTORMS ARE INCREASING ACROSS CENTRAL

NC INTO SOUTHEAST VA...IN REGION OF STRONG LOW LEVEL

THERMAL/MOISTURE ADVECTION.  ACTIVITY WILL LIKELY BECOME SEVERE WITH

DEEP LAYER VERTICAL SHEAR FAVORING SUPERCELL/BOW STRUCTURES.  HAIL

AND DAMAGING WINDS ARE THE MAIN THREAT OVER THE WESTERN HALF OF THE

WATCH...WITH AN INCREASING RISK OF TORNADOES FARTHER EAST WHERE

RICHER MOISTURE AND MORE BACKED LOW LEVEL WINDS WILL PROMOTE LOW

LEVEL MESOCYCLOGENESIS.



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.





...HART

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