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Tornado Watch 297
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WW0297 Radar
Hazard Tornadoes EF2+ Tornadoes
Likelihood Moderate Moderate
Severe Wind 65 kt+ Wind
Moderate Moderate
Severe Hail 2"+ Hail
Moderate Moderate

Note:  The expiration time in the watch graphic is amended if the watch is replaced, cancelled or extended.
Note: Click for Watch Status Reports.
   SEL7
   
   URGENT - IMMEDIATE BROADCAST REQUESTED
   TORNADO WATCH NUMBER 297
   NWS STORM PREDICTION CENTER NORMAN OK
   605 PM CDT WED MAY 13 2009
   
   THE NWS STORM PREDICTION CENTER HAS ISSUED A
   TORNADO WATCH FOR PORTIONS OF 
   
          CENTRAL AND NORTHEAST ILLINOIS
          LAKE MICHIGAN
   
   EFFECTIVE THIS WEDNESDAY EVENING FROM 605 PM UNTIL 1100 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 60 STATUTE
   MILES EAST AND WEST OF A LINE FROM 30 MILES NORTHEAST OF ROCKFORD
   ILLINOIS TO 30 MILES SOUTH SOUTHEAST OF BLOOMINGTON ILLINOIS. 
   FOR A COMPLETE DEPICTION OF THE WATCH SEE THE ASSOCIATED WATCH
   OUTLINE UPDATE (WOUS64 KWNS WOU7).
   
   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 293...WW 294...WW
   295...WW 296...
   
   DISCUSSION...DISCRETE CELLS ARE FORMING IN THE ZONE OF WAA TO THE N
   OF THE EARLY CONVECTION AND ONGOING MCV IN SE IL...AND WELL E OF THE
   COLD FRONT BACK IN IA/MO.  LOCAL WIND PROFILES APPEAR SUPPORTIVE OF
   SUPERCELLS ACROSS CENTRAL/NRN IL WHERE LOW-LEVEL SHEAR IS MAXIMIZED
   AND DEEP LAYER SHEAR IS STRONGER COMPARED TO AREAS FARTHER S/SE. 
   GIVEN THE STRONG LOW-LEVEL SHEAR AND MOIST PROFILES...A FEW
   TORNADOES MAY OCCUR DURING THE NEXT FEW HOURS.  LARGE HAIL AND
   ISOLATED DAMAGING WINDS WILL ALSO BE POSSIBLE WITH THE STRONGER
   STORMS...AND AS THE FRONTAL SQUALL LINE APPROACHES FROM THE W BY
   EARLY TONIGHT.
   
   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 25035.
   
   
   ...THOMPSON
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