Skip Navigation Links weather.gov 
NOAA logo-Select to go to the NOAA homepage NOAA's National Weather Service   Select to go to the NWS homepage
Storm Prediction Center
navigation bar left  
  navigation bar end cap


 
USA.gov is the U.S. Government's official Web portal to all Federal, state and local government Web resources and services.

Severe Thunderstorm Watch 501
< Previous WW          Next WW >
  | | | | | |  
WW0501 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.
   SEL1
   
   URGENT - IMMEDIATE BROADCAST REQUESTED
   SEVERE THUNDERSTORM WATCH NUMBER 501
   NWS STORM PREDICTION CENTER NORMAN OK
   330 PM CDT TUE JUN 23 2009
   
   THE NWS STORM PREDICTION CENTER HAS ISSUED A
   SEVERE THUNDERSTORM WATCH FOR PORTIONS OF 
   
          EASTERN INTO SOUTHWEST IOWA
          EASTERN INTO SOUTH CENTRAL NEBRASKA
   
   EFFECTIVE THIS TUESDAY AFTERNOON AND EVENING FROM 330 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 40
   STATUTE MILES NORTH AND SOUTH OF A LINE FROM 55 MILES EAST
   NORTHEAST OF CEDAR RAPIDS IOWA TO 25 MILES WEST OF KEARNEY
   NEBRASKA.  FOR A COMPLETE DEPICTION OF THE WATCH SEE THE
   ASSOCIATED WATCH OUTLINE UPDATE (WOUS64 KWNS WOU1).
   
   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 497...WW 498...WW
   499...WW 500...
   
   DISCUSSION...NARROW AREA OF SEVERE THUNDERSTORMS SHOULD EVOLVE
   THROUGH THE EVENING AS CONVECTIVE OUTFLOW BOUNDARY/EFFECTIVE COLD
   FRONT STALLS FROM S-CENTRAL/SWRN NEB INTO CENTRAL/ERN IA.  AIR MASS
   IS EXTREMELY UNSTABLE...WITH MLCAPE TO 5000 K/KG...WHICH SHOULD
   COMPENSATE FOR MARGINAL DEEP LAYER SHEAR.  INTENSE UPDRAFTS WILL
   REMAIN CAPABLE OF LARGE HAIL/DAMAGING WINDS...WITH MORE PERSISTENT
   ESEWD MOVING CLUSTERS SUSTAINING A GREATER RISK OF SEVERE.
   
   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 550. MEAN STORM
   MOTION VECTOR 27020.
   
   
   ...EVANS
WW0501 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.
   SEL1
   
   URGENT - IMMEDIATE BROADCAST REQUESTED
   SEVERE THUNDERSTORM WATCH NUMBER 501
   NWS STORM PREDICTION CENTER NORMAN OK
   330 PM CDT TUE JUN 23 2009
   
   THE NWS STORM PREDICTION CENTER HAS ISSUED A
   SEVERE THUNDERSTORM WATCH FOR PORTIONS OF 
   
          EASTERN INTO SOUTHWEST IOWA
          EASTERN INTO SOUTH CENTRAL NEBRASKA
   
   EFFECTIVE THIS TUESDAY AFTERNOON AND EVENING FROM 330 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 40
   STATUTE MILES NORTH AND SOUTH OF A LINE FROM 55 MILES EAST
   NORTHEAST OF CEDAR RAPIDS IOWA TO 25 MILES WEST OF KEARNEY
   NEBRASKA.  FOR A COMPLETE DEPICTION OF THE WATCH SEE THE
   ASSOCIATED WATCH OUTLINE UPDATE (WOUS64 KWNS WOU1).
   
   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 497...WW 498...WW
   499...WW 500...
   
   DISCUSSION...NARROW AREA OF SEVERE THUNDERSTORMS SHOULD EVOLVE
   THROUGH THE EVENING AS CONVECTIVE OUTFLOW BOUNDARY/EFFECTIVE COLD
   FRONT STALLS FROM S-CENTRAL/SWRN NEB INTO CENTRAL/ERN IA.  AIR MASS
   IS EXTREMELY UNSTABLE...WITH MLCAPE TO 5000 K/KG...WHICH SHOULD
   COMPENSATE FOR MARGINAL DEEP LAYER SHEAR.  INTENSE UPDRAFTS WILL
   REMAIN CAPABLE OF LARGE HAIL/DAMAGING WINDS...WITH MORE PERSISTENT
   ESEWD MOVING CLUSTERS SUSTAINING A GREATER RISK OF SEVERE.
   
   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 550. MEAN STORM
   MOTION VECTOR 27020.
   
   
   ...EVANS
Top of Page/Status Messages for this watch/All Current Watches/Forecast Products/Home
Weather Topics:
Watches, Mesoscale Discussions, Outlooks, Fire Weather, All Products, Contact Us
NOAA / National Weather Service
National Centers for Environmental Prediction
Storm Prediction Center
120 David L. Boren Blvd.
Norman, OK 73072 U.S.A.
spc.feedback@noaa.gov
Page last modified: June 23, 2009		 Disclaimer
Information Quality
Credits
Glossary 		Privacy Policy
Freedom of Information Act (FOIA)
About Us
Career Opportunities