November Tornado Climatology for the Area


  Below is listed the tornadoes that have occurred across the NWS Chicago CWA since 1950 prior to Sunday.  There had been a total of 12 before Sunday, in a total of six events (basically one such event every decade).  Note that eight of the November tornadoes have been EF-2 or stronger, showing that when tornadoes do occur in November, there is a decent likelihood they will be significant (EF-2 or stronger).  The primary reason for this is strong dynamics and wind field that tend to be present in the cool season (late autumn and winter), which add to a greater amount of wind shear.  This is a key component to tornadoes, and the greater the wind shear the more likelihood for significant tornadoes.


November tornadoes to occur in the NWS Chicago CWA since 1950: 

Date                Time        County                                                           
11/13/1951       400 PM       LAKE [IN]           F2                                              
11/26/1951       617 PM       FORD                 F1                                             
11/12/1965       248 PM       DU PAGE          F2                                            
11/12/1965       345 PM       COOK                F2                                             
11/12/1965       205 PM       LA SALLE          F2                                               
11/12/1965       235 PM       GRUNDY           F2                                              
11/12/1965       300 PM       WILL                   F2                  
11/12/1965       453 PM       LAKE [IN]           F3                                              
11/11/1971      1100 PM      LIVINGSTON     F1                                             
11/10/1975            UNK      LAKE [IL]            F1                                              
11/09/1984        640 PM     WILL                   F0                                               
11/22/2010        304 PM     WINNEBAGO   EF2          


Late Autumn Tornado Events in the Region:

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