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Tornado Watch 108
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WW0108 Radar
Note:  The expiration time in the watch graphic is amended if the watch is replaced, cancelled or extended.
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   SEL8
   
   URGENT - IMMEDIATE BROADCAST REQUESTED
   TORNADO WATCH NUMBER 108
   NWS STORM PREDICTION CENTER NORMAN OK
   615 AM EST SAT MAR 8 2008
   
   THE NWS STORM PREDICTION CENTER HAS ISSUED A
   TORNADO WATCH FOR PORTIONS OF 
   
          EASTERN NORTH CAROLINA
          SOUTHEASTERN VIRGINIA
          COASTAL WATERS
   
   EFFECTIVE THIS SATURDAY MORNING FROM 615 AM UNTIL NOON EST.
   
   TORNADOES...HAIL TO 1 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 75 STATUTE
   MILES EAST AND WEST OF A LINE FROM 40 MILES NORTH OF ELIZABETH
   CITY NORTH CAROLINA TO 25 MILES SOUTH SOUTHEAST OF WILMINGTON
   NORTH CAROLINA.  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 107...
   
   DISCUSSION...EXTREME LOW AND DEEP LAYER SHEAR WILL CONTINUE ACROSS
   THE REGION THIS MORNING AS STRONG MID/UPPER LEVEL SYSTEM EJECTS NEWD
   ACROSS THE APPALACHIANS.  ALTHOUGH INSTABILITY WILL REMAIN QUITE
   WEAK...INFLUX OF WARMER/MOIST AIR OFF THE ATLANTIC WILL SUSTAIN 65+F
   SURFACE DEW POINTS AND NEAR SURFACE-BASED INSTABILITY.  GIVEN THE
   EXTREME SHEAR...THIS WILL THEREFORE POSE A THREAT OF ISOLATED
   TORNADOES AND/OR DAMAGING WINDS AS STORMS INCREASE IN
   COVERAGE/INTENSITY AND SPREAD QUICKLY NNEWD ACROSS WW.
   
   AVIATION...TORNADOES AND 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 350.
   MEAN STORM MOTION VECTOR 22040.
   
   
   ...EVANS
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