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Severe Thunderstorm Watch 498
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WW0498 Radar
Hazard Tornadoes EF2+ Tornadoes
Likelihood Very 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.
   SEL8
   
   URGENT - IMMEDIATE BROADCAST REQUESTED
   SEVERE THUNDERSTORM WATCH NUMBER 498
   NWS STORM PREDICTION CENTER NORMAN OK
   1200 PM CDT TUE JUN 23 2009
   
   THE NWS STORM PREDICTION CENTER HAS ISSUED A
   SEVERE THUNDERSTORM WATCH FOR PORTIONS OF 
   
          NORTHERN INTO CENTRAL IOWA
          SOUTHERN MINNESOTA
   
   EFFECTIVE THIS TUESDAY AFTERNOON AND EVENING FROM NOON UNTIL 600
   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 10 MILES WEST OF
   SPENCER IOWA TO 55 MILES NORTHEAST OF WATERLOO IOWA.  FOR A
   COMPLETE DEPICTION OF THE WATCH SEE THE ASSOCIATED WATCH OUTLINE
   UPDATE (WOUS64 KWNS WOU8).
   
   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 495...WW 496...WW 497...
   
   DISCUSSION...LONG-LIVED COMPLEX OF THUNDERSTORMS MOVING OUT OF THE
   CENTRAL PLAINS SHOULD CONTINUE GENERALLY EWD AT 35-40 KT ALONG
   COMMON OUTFLOW INTO EXTREME INSTABILITY IN PLACE ACROSS WW. 
   DAMAGING WINDS COULD BECOME MORE ORGANIZED THIS AFTERNOON AS COLD
   POOL INTENSIFIES...WITH LARGE HAIL POSSIBLE WITH THE STRONGER CORES.
   
   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 27035.
   
   
   ...EVANS
WW0498 Radar
Hazard Tornadoes EF2+ Tornadoes
Likelihood Very Low Very Low
Severe Wind 65 kt+ Wind
Moderate Moderate
Severe Hail 2"+ Hail
Moderate Low

Note:  See the experimental Public Watch (SEL) product with explicit hazard information section below. The expiration time in the watch graphic is amended if the watch is replaced, cancelled or extended.
Note: Click for Watch Status Reports.
   SEL8
   
   URGENT - IMMEDIATE BROADCAST REQUESTED
   SEVERE THUNDERSTORM WATCH NUMBER 498
   NWS STORM PREDICTION CENTER NORMAN OK
   1200 PM CDT TUE JUN 23 2009
   
   THE NWS STORM PREDICTION CENTER HAS ISSUED A
   SEVERE THUNDERSTORM WATCH FOR PORTIONS OF 
   
          NORTHERN INTO CENTRAL IOWA
          SOUTHERN MINNESOTA
   
   EFFECTIVE THIS TUESDAY AFTERNOON AND EVENING FROM NOON UNTIL 600
   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 10 MILES WEST OF
   SPENCER IOWA TO 55 MILES NORTHEAST OF WATERLOO IOWA.  FOR A
   COMPLETE DEPICTION OF THE WATCH SEE THE ASSOCIATED WATCH OUTLINE
   UPDATE (WOUS64 KWNS WOU8).
   
   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 495...WW 496...WW 497...
   
   DISCUSSION...LONG-LIVED COMPLEX OF THUNDERSTORMS MOVING OUT OF THE
   CENTRAL PLAINS SHOULD CONTINUE GENERALLY EWD AT 35-40 KT ALONG
   COMMON OUTFLOW INTO EXTREME INSTABILITY IN PLACE ACROSS WW. 
   DAMAGING WINDS COULD BECOME MORE ORGANIZED THIS AFTERNOON AS COLD
   POOL INTENSIFIES...WITH LARGE HAIL POSSIBLE WITH THE STRONGER CORES.
   
   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 27035.
   
   
   ...EVANS
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