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Severe Thunderstorm Watch 629
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WW0629 Radar
Hazard Tornadoes EF2+ Tornadoes
Likelihood Low Very Low
Severe Wind 65 kt+ Wind
Moderate Low
Severe Hail 2"+ Hail
Low 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.
   SEL9
   
   URGENT - IMMEDIATE BROADCAST REQUESTED
   SEVERE THUNDERSTORM WATCH NUMBER 629
   NWS STORM PREDICTION CENTER NORMAN OK
   325 PM EDT FRI SEP 7 2012
   
   THE NWS STORM PREDICTION CENTER HAS ISSUED A
   SEVERE THUNDERSTORM WATCH FOR PORTIONS OF 
   
          NORTHEAST OHIO
          NORTHWEST PENNSYLVANIA
          LAKE ERIE
   
   EFFECTIVE THIS FRIDAY AFTERNOON AND EVENING FROM 325 PM UNTIL 900
   PM EDT.
   
   HAIL TO 1.5 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 15 MILES NORTHEAST
   OF FRANKLIN PENNSYLVANIA TO 10 MILES SOUTHWEST OF MANSFIELD OHIO.
    FOR A COMPLETE DEPICTION OF THE WATCH SEE THE ASSOCIATED WATCH
   OUTLINE UPDATE (WOUS64 KWNS WOU9).
   
   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 628...
   
   DISCUSSION...A BROKEN BAND OF STORMS WILL CONTINUE TO SPREAD EWD
   INTO NE OH THIS AFTERNOON/EVENING...WITH ADDITIONAL DEVELOPMENT
   POSSIBLE INTO NW PA.  THE COMBINATION OF MODERATE INSTABILITY AND A
   GRADUAL INCREASE IN VERTICAL SHEAR WILL CONTINUE TO SUPPORT A RISK
   OF MAINLY ORGANIZED MULTICELL CLUSTERS/LINE SEGMENTS CAPABLE OF
   PRODUCING DAMAGING WINDS AND LARGE HAIL.
   
   AVIATION...A FEW SEVERE THUNDERSTORMS WITH HAIL SURFACE AND ALOFT
   TO 1.5 INCHES. EXTREME TURBULENCE AND SURFACE WIND GUSTS TO 60
   KNOTS. A FEW CUMULONIMBI WITH MAXIMUM TOPS TO 500. MEAN STORM
   MOTION VECTOR 27030.
   
   
   ...THOMPSON
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Page last modified: September 08, 2012
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