May 25: PDS Tornado Watch #375

URGENT - IMMEDIATE BROADCAST REQUESTED
   TORNADO WATCH NUMBER 375
   NWS STORM PREDICTION CENTER NORMAN OK
   635 PM EDT WED MAY 25 2011
   
   THE NWS STORM PREDICTION CENTER HAS ISSUED A
   TORNADO WATCH FOR PORTIONS OF 
   
          LARGE PART OF CENTRAL AND SOUTHERN INDIANA
   
   EFFECTIVE THIS WEDNESDAY NIGHT AND THURSDAY MORNING FROM 635 PM
   UNTIL 200 AM EDT.
   
   ...THIS IS A PARTICULARLY DANGEROUS SITUATION...
   
   DESTRUCTIVE TORNADOES...LARGE HAIL TO 3 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 70 STATUTE
   MILES EAST AND WEST OF A LINE FROM 30 MILES SOUTH OF BLOOMINGTON
   INDIANA TO 50 MILES NORTH NORTHWEST OF MUNCIE INDIANA.  FOR A
   COMPLETE DEPICTION OF THE WATCH SEE THE ASSOCIATED WATCH OUTLINE
   UPDATE (WOUS64 KWNS WOU5).
   
   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...THIS TORNADO WATCH REPLACES TORNADO
   WATCH NUMBER 368. WATCH NUMBER 368 WILL NOT BE IN EFFECT AFTER
   635 PM EDT. CONTINUE...WW 370...WW 371...WW 372...WW 373...WW
   374...
   
   DISCUSSION...SUPERCELLS ARE EXPECTED TO INCREASE AND SPREAD ACROSS
   THE WATCH THIS EVENING GIVEN THE VERY FAVORABLE SHEAR PROFILES
   COUPLED WITH THE LARGE AMOUNT OF INSTABILITY AVAILABLE. E/W BOUNDARY
   ACROSS CENTRAL IND WILL BE A FOCUS FOR ENHANCED SHEAR/CONVERGENCE.
   TORNADOS POSSIBLY STRONG TO VIOLENT WILL BE A THREAT WELL INTO THE
   EARLY NIGHTTIME HOURS.
   
   AVIATION...TORNADOES AND A FEW SEVERE THUNDERSTORMS WITH HAIL
   SURFACE AND ALOFT TO 3 INCHES. EXTREME TURBULENCE AND SURFACE
   WIND GUSTS TO 60 KNOTS. A FEW CUMULONIMBI WITH MAXIMUM TOPS TO
   550. MEAN STORM MOTION VECTOR 24040.