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Tornado Watch 373
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WW0373 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.
   SEL3
   
   URGENT - IMMEDIATE BROADCAST REQUESTED
   TORNADO WATCH NUMBER 373
   NWS STORM PREDICTION CENTER NORMAN OK
   235 PM CDT WED MAY 25 2011
   
   THE NWS STORM PREDICTION CENTER HAS ISSUED A
   TORNADO WATCH FOR PORTIONS OF 
   
          FAR SOUTHEAST IOWA
          CENTRAL AND NORTHERN ILLINOIS
          FAR NORTHEAST MISSOURI
   
   EFFECTIVE THIS WEDNESDAY AFTERNOON AND EVENING FROM 235 PM UNTIL
   1000 PM CDT.
   
   TORNADOES...HAIL TO 1.5 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 70 MILES NORTHEAST OF MOLINE
   ILLINOIS TO 45 MILES WEST OF ALTON ILLINOIS.  FOR A COMPLETE
   DEPICTION OF THE WATCH SEE THE ASSOCIATED WATCH OUTLINE UPDATE
   (WOUS64 KWNS WOU3).
   
   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 368...WW 369...WW
   370...WW 371...WW 372...
   
   DISCUSSION...CLUSTER OF SEVERE STORMS --INCLUDING TORNADIC
   SUPERCELLS-- OVER NERN MO WILL CONTINUE TO DEVELOP NEWD INTO AREA
   THIS AFTERNOON IN ADVANCE OF DEEP-LAYER CYCLONE MOVING INTO NRN MO. 
   RELATIVELY CLOUD-FREE SKIES HAVE ALLOWED TEMPERATURES TO WARM
   THROUGH THE 70S.  WHEN COUPLED WITH BOUNDARY LAYER DEWPOINTS IN THE
   MID 60S AND COOLING MIDLEVEL TEMPERATURES ARE RESULTING IN A
   MODERATELY UNSTABLE ENVIRONMENT WITH MLCAPE OF 1000-2000 J/KG. 
   GIVEN VERTICALLY VEERING WIND PROFILES AND AMBIENT VORTICITY INVOF
   WARM FRONT...SETUP WILL BE SUPPORTIVE OF SUPERCELLS CAPABLE OF
   TORNADOES...LARGE HAIL AND DAMAGING WINDS.
   
   AVIATION...TORNADOES AND A FEW SEVERE THUNDERSTORMS WITH HAIL
   SURFACE AND ALOFT TO 1.5 INCHES. EXTREME TURBULENCE AND SURFACE
   WIND GUSTS TO 60 KNOTS. A FEW CUMULONIMBI WITH MAXIMUM TOPS TO
   500. MEAN STORM MOTION VECTOR 22035.
   
   
   ...MEAD
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