URGENT - IMMEDIATE BROADCAST REQUESTED TORNADO WATCH NUMBER 394 NWS STORM PREDICTION CENTER NORMAN OK 155 PM CDT FRI MAY 30 2008 THE NWS STORM PREDICTION CENTER HAS ISSUED A TORNADO WATCH FOR PORTIONS OF CENTRAL ILLINOIS NORTHWEST INTO WEST CENTRAL INDIANA EAST-CENTRAL MISSOURI EFFECTIVE THIS FRIDAY AFTERNOON AND EVENING FROM 155 PM UNTIL 1000 PM CDT. 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 55 STATUTE MILES NORTH AND SOUTH OF A LINE FROM 10 MILES WEST OF JEFFERSON CITY MISSOURI TO 35 MILES EAST NORTHEAST OF LAFAYETTE INDIANA. FOR A COMPLETE DEPICTION OF THE WATCH SEE THE ASSOCIATED WATCH OUTLINE UPDATE (WOUS64 KWNS WOU4). 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 393. WATCH NUMBER 393 WILL NOT BE IN EFFECT AFTER 155 PM CDT. DISCUSSION...THUNDERSTORMS WILL INCREASE ACROSS THIS REGION THROUGH THE EVENING AS STRONG SURFACE HEATING AND CONTINUED LOW LEVEL MOISTENING ERASE CAP. AIR MASS WILL BE MODERATELY UNSTABLE WITH STRONG DEEP LAYER SHEAR SUPPORTING SUPERCELLS AND BOW ECHOES THROUGH THE EVENING. ISOLATED TORNADOES AND LARGE HAIL REMAIN POSSIBLE...ALONG WITH POTENTIAL FOR WIDESPREAD DAMAGING WINDS AS STORMS ORGANIZE INTO BOWING STRUCTURES THIS EVENING. 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 500. MEAN STORM MOTION VECTOR 26030. ...EVANS