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Tornado Watch 116
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WW0116 Radar
Hazard Tornadoes EF2+ Tornadoes
Likelihood High Low
Severe Wind 65 kt+ Wind
Moderate Moderate
Severe Hail 2"+ Hail
High Moderate

Note:  The expiration time in the watch graphic is amended if the watch is replaced, cancelled or extended.
Note: Click for Watch Status Reports.
   SEL6
   
   URGENT - IMMEDIATE BROADCAST REQUESTED
   TORNADO WATCH NUMBER 116
   NWS STORM PREDICTION CENTER NORMAN OK
   550 PM CDT SAT APR 9 2011
   
   THE NWS STORM PREDICTION CENTER HAS ISSUED A
   TORNADO WATCH FOR PORTIONS OF 
   
          WESTERN AND NORTHERN IOWA
          EASTERN NEBRASKA
          SOUTHEAST SOUTH DAKOTA
   
   EFFECTIVE THIS SATURDAY AFTERNOON AND SUNDAY MORNING FROM 550 PM
   UNTIL 100 AM CDT.
   
   TORNADOES...HAIL TO 3 INCHES IN DIAMETER...THUNDERSTORM WIND
   GUSTS TO 80 MPH...AND DANGEROUS LIGHTNING ARE POSSIBLE IN THESE
   AREAS.
   
   THE TORNADO WATCH AREA IS APPROXIMATELY ALONG AND 95 STATUTE
   MILES EAST AND WEST OF A LINE FROM 15 MILES SOUTH SOUTHWEST OF
   LINCOLN NEBRASKA TO 25 MILES NORTH NORTHEAST OF SPENCER IOWA. 
   FOR A COMPLETE DEPICTION OF THE WATCH SEE THE ASSOCIATED WATCH
   OUTLINE UPDATE (WOUS64 KWNS WOU6).
   
   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 113...WW 114...WW 115...
   
   DISCUSSION...TSTMS EXPECTED TO INCREASE OVER WW AREA THROUGH LATE
   TONIGHT...WITH STRONG SUPERCELLS LIKELY AS CONVERGENCE/ASCENT AND
   WIND FIELD FURTHER STRENGTHEN WITH APPROACH OF UPR AIR IMPULSE IN
   FAST SWLY MID/UPR FLOW.  LOW-LVL HELICITY/UPLIFT SHOULD MAXIMIZE
   NEAR AND ENE OF SFC LOW NOW NEAR KOFK...WITH THE LOW EXPECTED TO
   REMAIN LARGELY STNRY THROUGH WW PERIOD.
   
   AVIATION...TORNADOES AND A FEW SEVERE THUNDERSTORMS WITH HAIL
   SURFACE AND ALOFT TO 3 INCHES. EXTREME TURBULENCE AND SURFACE
   WIND GUSTS TO 70 KNOTS. A FEW CUMULONIMBI WITH MAXIMUM TOPS TO
   550. MEAN STORM MOTION VECTOR 24035.
   
   
   ...CORFIDI
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Page last modified: April 10, 2011
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