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Severe Thunderstorm Watch 776
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WW0776 Radar
Hazard Tornadoes EF2+ Tornadoes
Likelihood Low Very Low
Severe Wind 65 kt+ Wind
Low Moderate
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.
   SEL6
   
   URGENT - IMMEDIATE BROADCAST REQUESTED
   SEVERE THUNDERSTORM WATCH NUMBER 776
   NWS STORM PREDICTION CENTER NORMAN OK
   530 PM EDT SAT AUG 13 2011
   
   THE NWS STORM PREDICTION CENTER HAS ISSUED A
   SEVERE THUNDERSTORM WATCH FOR PORTIONS OF 
   
          SOUTHEAST LOWER MICHIGAN
          NORTHWEST OHIO
          LAKE ERIE
   
   EFFECTIVE THIS SATURDAY AFTERNOON AND SUNDAY MORNING FROM 530 PM
   UNTIL 100 AM EDT.
   
   HAIL TO 1 INCH 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 EAST AND WEST OF A LINE FROM 5 MILES NORTH
   NORTHEAST OF FLINT MICHIGAN TO 55 MILES SOUTHEAST OF TOLEDO OHIO.
    FOR A COMPLETE DEPICTION OF THE WATCH SEE THE ASSOCIATED WATCH
   OUTLINE UPDATE (WOUS64 KWNS WOU6).
   
   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 775...
   
   DISCUSSION...PREFRONTAL SQUALL LINE WITH HAIL TO 1 INCH AND WIND
   GUSTS TO 50KT WILL CONTINUE TO SPREAD EAST ACROSS SOUTHERN LOWER MI
   AND INTO EXTREME NWRN OH OVER THE NEXT FEW HOURS. CONVECTIVE SYSTEM
   IS IN RESPONSE TO LARGE SCALE TROUGH AMPLIFICATION ACROSS THE REGION
   AND...DESPITE SOME BOUNDARY LAYER STABILIZATION LIKELY LATER THIS
   EVENING...IT APPEARS THAT FORCING AND AVAILABLE INSTABILITY MAY
   SUSTAIN SOME SEVERE WEATHER THREAT BEYOND SUNSET.
   
   AVIATION...A FEW SEVERE THUNDERSTORMS WITH HAIL SURFACE AND ALOFT
   TO 1 INCH. EXTREME TURBULENCE AND SURFACE WIND GUSTS TO 60 KNOTS.
   A FEW CUMULONIMBI WITH MAXIMUM TOPS TO 450. MEAN STORM MOTION
   VECTOR 26025.
   
   
   ...CARBIN
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