

000 

WWUS20 KWNS 180900

SEL8

SPC WW 180900

NCZ000-VAZ000-CWZ000-181600-



URGENT - IMMEDIATE BROADCAST REQUESTED

TORNADO WATCH NUMBER 68

NWS STORM PREDICTION CENTER NORMAN OK

400 AM EST MON FEB 18 2008



THE NWS STORM PREDICTION CENTER HAS ISSUED A

TORNADO WATCH FOR PORTIONS OF



       EXTREME NORTHEAST NORTH CAROLINA

       SOUTHEAST VIRGINIA

       COASTAL WATERS



EFFECTIVE THIS MONDAY MORNING FROM 400 AM UNTIL 1100 AM EST.



TORNADOES...HAIL TO 0.5 INCH IN DIAMETER...THUNDERSTORM WIND

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

AREAS.



THE TORNADO WATCH AREA IS APPROXIMATELY ALONG AND 60 STATUTE

MILES EAST AND WEST OF A LINE FROM 30 MILES WEST SOUTHWEST OF

ELIZABETH CITY NORTH CAROLINA TO 35 MILES EAST NORTHEAST OF

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

ASSOCIATED WATCH OUTLINE UPDATE (WOUS64 KWNS WOU8).



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 66...WW 67...



DISCUSSION...BROKEN SQLN WITH EMBEDDED SUPERCELLS OVER ERN NC

EXPECTED TO CONTINUE MOVING ENEWD...WITH ADDITIONAL DEVELOPMENT

LIKELY ON NRN END OF SYSTEM AS IT ENCOUNTERS INCREASINGLY RICH

MOISTURE ASSOCIATED WITH STRONG SLY LLJ.  ASCENT PROVIDED BY

PROGRESSIVE LARGE SCALE TROUGH TO THE WEST...AND INTENSE SHEAR

PROFILES...SUGGEST POTENTIAL FOR EMBEDDED SUPERCELLS WITH A RISK FOR

HIGH WIND/ISOLATED TORNADOES.



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

350. MEAN STORM MOTION VECTOR 22050.





...CORFIDI

