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Tornado Watch 478
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WW0478 Radar
Hazard Tornadoes EF2+ Tornadoes
Likelihood Moderate 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
   TORNADO WATCH NUMBER 478
   NWS STORM PREDICTION CENTER NORMAN OK
   1150 AM EDT FRI JUN 19 2009
   
   THE NWS STORM PREDICTION CENTER HAS ISSUED A
   TORNADO WATCH FOR PORTIONS OF 
   
          NORTHERN AND CENTRAL INDIANA
          SOUTHWEST MICHIGAN
          LAKE MICHIGAN
   
   EFFECTIVE THIS FRIDAY MORNING AND EVENING FROM 1150 AM UNTIL 700
   PM EDT.
   
   TORNADOES...HAIL TO 2 INCHES IN DIAMETER...THUNDERSTORM WIND
   GUSTS TO 70 MPH...AND DANGEROUS LIGHTNING ARE POSSIBLE IN THESE
   AREAS.
   
   THE TORNADO WATCH AREA IS APPROXIMATELY ALONG AND 85 STATUTE
   MILES NORTH AND SOUTH OF A LINE FROM 25 MILES WEST SOUTHWEST OF
   VALPARAISO INDIANA TO 25 MILES SOUTHEAST OF FORT WAYNE INDIANA. 
   FOR A COMPLETE DEPICTION OF THE WATCH SEE THE ASSOCIATED WATCH
   OUTLINE UPDATE (WOUS64 KWNS WOU8).
   
   REMEMBER...A TORNADO WATCH MEANS CONDITIONS ARE FAVORABLE FOR
   TORNADOES AND 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.
   
   OTHER WATCH INFORMATION...CONTINUE...WW 477...
   
   DISCUSSION...STRONG/SEVERE STORMS ARE PROPAGATING EWD/ESEWD ACROSS
   THE CHI ARE...AND NEW STORMS ARE DEVELOPING ALONG/NORTH OF AN
   OUTFLOW BOUNDARY OVER EAST CENTRAL IL.  THE ENVIRONMENT OVER
   NRN/CNTRL INDIANA IS DESTABILIZING AS STRONG DIABATIC HEATING OCCURS
   NORTH OF THE BOUNDARY.  WINDS VEER AND INCREASE WITH HEIGHT WITH
   40-50 KT DEEP LAYER SHEAR AND ENHANCED LOW-LEVEL SRH ASSOCIATED WITH
   BACKED NEAR-SURFACE FLOW NORTH OF THE BOUNDARY...PROVIDING A
   FAVORABLE SUPERCELL ENVIRONMENT. STORMS ARE EXPECTED TO CONTINUE
   INTENSIFYING INTO THE AFTERNOON HOURS...WITH STRONGER STORMS CAPABLE
   OF PRODUCING DAMAGING WINDS...HAIL...AND A FEW TORNADOES.
   
   AVIATION...TORNADOES AND 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 28035.
   
   
   ...WEISS
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