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Severe Thunderstorm Watch 510
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WW0510 Radar
Hazard Tornadoes EF2+ Tornadoes
Likelihood Low Very Low
Severe Wind 65 kt+ Wind
Moderate Moderate
Severe Hail 2"+ Hail
High 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 510
   NWS STORM PREDICTION CENTER NORMAN OK
   210 PM EDT THU JUN 25 2009
   
   THE NWS STORM PREDICTION CENTER HAS ISSUED A
   SEVERE THUNDERSTORM WATCH FOR PORTIONS OF 
   
          NORTHEAST INDIANA
          SOUTHERN MICHIGAN
          NORTHERN INTO CENTRAL OHIO
          FAR NORTHWEST PENNSYLVANIA
          LAKE ERIE
          LAKE HURON
   
   EFFECTIVE THIS THURSDAY AFTERNOON AND EVENING FROM 210 PM UNTIL
   1000 PM EDT.
   
   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 105
   STATUTE MILES NORTH AND SOUTH OF A LINE FROM KALAMAZOO MICHIGAN
   TO 20 MILES EAST SOUTHEAST OF YOUNGSTOWN OHIO.  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 508...WW 509...
   
   DISCUSSION...SEVERAL CLUSTERS/AREAS OF SEVERE THUNDERSTORMS EXPECTED
   TO EVOLVE ACROSS WW THROUGH THIS EVENING WITHIN LARGE RESERVOIR OF
   MODERATE TO STRONG INSTABILITY AND MODEST DEEP LAYER SHEAR. 
   DAMAGING WINDS AND LARGE HAIL WILL BE COMMON WITH THE MORE INTENSE
   CORES AS ACTIVITY MOVE ESEWD THROUGH THE EVENING.
   
   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 28020.
   
   
   ...EVANS
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