SEL8
   
   URGENT - IMMEDIATE BROADCAST REQUESTED
   SEVERE THUNDERSTORM WATCH NUMBER 848
   NWS STORM PREDICTION CENTER NORMAN OK
   520 AM EST SUN NOV 6 2005
   
   THE NWS STORM PREDICTION CENTER HAS ISSUED A
   SEVERE THUNDERSTORM WATCH FOR PORTIONS OF 
   
          CENTRAL AND EASTERN OHIO
          WESTERN PENNSYLVANIA
          LAKE ERIE
   
   EFFECTIVE THIS SUNDAY MORNING FROM 520 AM UNTIL NOON EST.
   
   HAIL TO 0.5 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 85
   STATUTE MILES EAST AND WEST OF A LINE FROM 30 MILES WEST NORTHWEST
   OF ERIE PENNSYLVANIA TO 35 MILES SOUTH OF MANSFIELD OHIO.  FOR A
   COMPLETE DEPICTION OF THE WATCH SEE THE ASSOCIATED WATCH OUTLINE
   UPDATE (WOUS64 KWNS WOU8).
   
   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 845...WW 846...WW 847...
   
   DISCUSSION...BROKEN SQUALL LINE WITH EMBEDDED DISCRETE
   STORMS/SUPERCELLS IN W CNTRL AND SW OH SHOULD CONTINUE ENE AT 40-45
   KTS THROUGH MID MORNING.  WHILE ACTIVITY HAS MOVED BEYOND AXIS OF
   MAXIMUM LOW LEVEL THETA-E...SUFFICIENT SURFACE-BASED INSTABILITY
   APPEARS PRESENT TO SUPPORT A THREAT FOR ADDITIONAL SEVERE SURFACE
   WINDS...AND POSSIBLY AN ISOLATED TORNADO...AS 80+ KT MID LEVEL SPEED
   MAX TRACKS ENE UP THE OH VLY.
   
   AVIATION...A FEW SEVERE THUNDERSTORMS WITH HAIL SURFACE AND ALOFT
   TO 0.5 INCH. EXTREME TURBULENCE AND SURFACE WIND GUSTS TO 60
   KNOTS. A FEW CUMULONIMBI WITH MAXIMUM TOPS TO 300. MEAN STORM
   MOTION VECTOR 24050.
   
   
   ...CORFIDI