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Severe Thunderstorm Watch 560
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WW0560 Radar
Hazard Tornadoes EF2+ Tornadoes
Likelihood Low Very Low
Severe Wind 65 kt+ Wind
Moderate Moderate
Severe Hail 2"+ Hail
Moderate Low

Note:  The expiration time in the watch graphic is amended if the watch is replaced, cancelled or extended.
Note: Click for Watch Status Reports.
   SEL0
   
   URGENT - IMMEDIATE BROADCAST REQUESTED
   SEVERE THUNDERSTORM WATCH NUMBER 560
   NWS STORM PREDICTION CENTER NORMAN OK
   215 PM CDT TUE JUL 7 2009
   
   THE NWS STORM PREDICTION CENTER HAS ISSUED A
   SEVERE THUNDERSTORM WATCH FOR PORTIONS OF 
   
          NORTHEAST IOWA
          SOUTHWEST MINNESOTA
          NORTHEAST NEBRASKA
          EASTERN SOUTH DAKOTA
   
   EFFECTIVE THIS TUESDAY AFTERNOON AND EVENING FROM 215 PM UNTIL
   1000 PM CDT.
   
   HAIL TO 2 INCHES IN DIAMETER...THUNDERSTORM WIND GUSTS TO 70
   MPH...AND DANGEROUS LIGHTNING ARE POSSIBLE IN THESE AREAS.
   
   THE SEVERE THUNDERSTORM WATCH AREA IS APPROXIMATELY ALONG AND 80
   STATUTE MILES NORTH AND SOUTH OF A LINE FROM 15 MILES NORTH
   NORTHWEST OF CHAMBERLAIN SOUTH DAKOTA TO 20 MILES NORTHEAST OF
   SPENCER IOWA.  FOR A COMPLETE DEPICTION OF THE WATCH SEE THE
   ASSOCIATED WATCH OUTLINE UPDATE (WOUS64 KWNS WOU0).
   
   REMEMBER...A SEVERE THUNDERSTORM WATCH MEANS CONDITIONS ARE
   FAVORABLE FOR 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. SEVERE THUNDERSTORMS CAN AND OCCASIONALLY
   DO PRODUCE TORNADOES.
   
   OTHER WATCH INFORMATION...CONTINUE...WW 559...
   
   DISCUSSION...THUNDERSTORMS ARE EXPECTED TO INTENSIFY IN THE NEXT
   COUPLE OF HOURS OVER EASTERN SD...SPREADING INTO PARTS OF SOUTHWEST
   MN AND NORTHWEST IA DURING EVENING.  STRONG INSTABILITY...SUFFICIENT
   DEEP LAYER VERTICAL SHEAR...AND PRESENCE OF SEVERAL WEAK BOUNDARIES
   WILL HELP TO PROMOTE A RISK OF DAMAGING WINDS AND HAIL WITH STRONGER
   CELLS THROUGH 03Z.
   
   AVIATION...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 500. MEAN STORM
   MOTION VECTOR 29030.
   
   
   ...HART
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