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Tornado Watch 775
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WW0775 Radar
Note:  The expiration time in the watch graphic is amended if the watch is replaced, cancelled or extended.
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   SEL5
   
   URGENT - IMMEDIATE BROADCAST REQUESTED
   TORNADO WATCH NUMBER 775
   NWS STORM PREDICTION CENTER NORMAN OK
   355 PM CDT SAT SEP 16 2006
   
   THE NWS STORM PREDICTION CENTER HAS ISSUED A
   TORNADO WATCH FOR PORTIONS OF 
   
          WESTERN IOWA
          NORTH CENTRAL AND NORTHEAST KANSAS
          CENTRAL AND EASTERN NEBRASKA
   
   EFFECTIVE THIS SATURDAY AFTERNOON AND EVENING FROM 355 PM UNTIL
   1100 PM CDT.
   
   TORNADOES...HAIL TO 3 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 90 STATUTE
   MILES EAST AND WEST OF A LINE FROM 30 MILES NORTH OF COLUMBUS
   NEBRASKA TO 35 MILES SOUTH SOUTHEAST OF CONCORDIA KANSAS.  FOR A
   COMPLETE DEPICTION OF THE WATCH SEE THE ASSOCIATED WATCH OUTLINE
   UPDATE (WOUS64 KWNS WOU5).
   
   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 774...
   
   DISCUSSION...AIR MASS HAS BECOME VERY UNSTABLE AHEAD OF ADVANCING
   DRYLINE MOVING THRU CENTRAL NEB WITH MLCAPE VALUES BETWEEN 1500-3000
   J/KG.  STRONG MID/UPR LEVEL JET STREAK IS MOVING INTO WRN NEB
   ENHANCING VERTICAL WIND PROFILES ACROSS THE REGION.  SEVERE
   STORMS/SUPERCELLS  ARE EXPECTED TO DEVELOP ALONG/AHD OF ADVANCING
   DRYLINE NEXT FEW HOURS.
   
   AVIATION...TORNADOES AND A FEW SEVERE THUNDERSTORMS WITH HAIL
   SURFACE AND ALOFT TO 3 INCHES. EXTREME TURBULENCE AND SURFACE
   WIND GUSTS TO 60 KNOTS. A FEW CUMULONIMBI WITH MAXIMUM TOPS TO
   500. MEAN STORM MOTION VECTOR 23035.
   
   
   ...MCCARTHY
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