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Tornado Watch 55
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WW0055 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 55
   NWS STORM PREDICTION CENTER NORMAN OK
   350 PM CDT MON MAR 23 2009
   
   THE NWS STORM PREDICTION CENTER HAS ISSUED A
   TORNADO WATCH FOR PORTIONS OF 
   
          PARTS OF WESTERN IOWA
          SMALL PART OF NORTHWEST MISSOURI
          PARTS OF EASTERN NEBRASKA
          PARTS OF SOUTHERN SOUTH DAKOTA
   
   EFFECTIVE THIS MONDAY AFTERNOON AND EVENING FROM 350 PM UNTIL
   1000 PM CDT.
   
   TORNADOES...HAIL TO 2 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 10 MILES WEST SOUTHWEST OF
   FALLS CITY NEBRASKA TO 35 MILES WEST NORTHWEST OF HURON SOUTH
   DAKOTA.  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...THIS TORNADO WATCH REPLACES TORNADO
   WATCH NUMBER 53. WATCH NUMBER 53 WILL NOT BE IN EFFECT AFTER 350
   PM CDT. CONTINUE...WW 54...
   
   DISCUSSION...THUNDERSTORMS ARE RAPIDLY DEVELOPING NEWD AHEAD OF
   VIGOROUS UPPER TROUGH AND SURFACE LOW MOVING ACROSS CENTRAL NEB. 
   WITH VERY STRONG SHEAR AND ADEQUATE INSTABILITY...SUPERCELLS ARE
   LIKELY WITH LARGE HAIL/DAMAGING WINDS AND POTENTIAL TORNADOS.
   
   AVIATION...TORNADOES AND A FEW SEVERE THUNDERSTORMS WITH HAIL
   SURFACE AND ALOFT TO 2 INCHES. EXTREME TURBULENCE AND SURFACE
   WIND GUSTS TO 60 KNOTS. A FEW CUMULONIMBI WITH MAXIMUM TOPS TO
   450. MEAN STORM MOTION VECTOR 21045.
   
   
   ...HALES
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